2003-05-05 04:54:15 +02:00
|
|
|
/*
|
2004-03-08 03:15:13 +01:00
|
|
|
* Copyright (C) 2003-2004 the ffmpeg project
|
2003-05-05 04:54:15 +02:00
|
|
|
*
|
2006-10-07 17:30:46 +02:00
|
|
|
* This file is part of FFmpeg.
|
|
|
|
*
|
|
|
|
* FFmpeg is free software; you can redistribute it and/or
|
2003-05-05 04:54:15 +02:00
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 17:30:46 +02:00
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
2003-05-05 04:54:15 +02:00
|
|
|
*
|
2006-10-07 17:30:46 +02:00
|
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
2003-05-05 04:54:15 +02:00
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
* Lesser General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
2006-10-07 17:30:46 +02:00
|
|
|
* License along with FFmpeg; if not, write to the Free Software
|
2006-01-12 23:43:26 +01:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2003-05-05 04:54:15 +02:00
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
2010-04-20 16:45:34 +02:00
|
|
|
* @file
|
2003-05-05 04:54:15 +02:00
|
|
|
* On2 VP3 Video Decoder
|
2005-05-18 01:39:23 +02:00
|
|
|
*
|
|
|
|
* VP3 Video Decoder by Mike Melanson (mike at multimedia.cx)
|
|
|
|
* For more information about the VP3 coding process, visit:
|
2008-05-04 11:58:22 +02:00
|
|
|
* http://wiki.multimedia.cx/index.php?title=On2_VP3
|
2005-05-18 01:39:23 +02:00
|
|
|
*
|
|
|
|
* Theora decoder by Alex Beregszaszi
|
2003-05-05 04:54:15 +02:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
|
2010-08-06 11:37:04 +02:00
|
|
|
#include "libavcore/imgutils.h"
|
2003-05-05 04:54:15 +02:00
|
|
|
#include "avcodec.h"
|
|
|
|
#include "dsputil.h"
|
2009-04-13 18:20:26 +02:00
|
|
|
#include "get_bits.h"
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
#include "vp3data.h"
|
2007-03-25 03:09:26 +02:00
|
|
|
#include "xiph.h"
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
#define FRAGMENT_PIXELS 8
|
|
|
|
|
2009-09-24 08:33:16 +02:00
|
|
|
static av_cold int vp3_decode_end(AVCodecContext *avctx);
|
|
|
|
|
2005-05-19 12:48:36 +02:00
|
|
|
//FIXME split things out into their own arrays
|
2003-05-05 04:54:15 +02:00
|
|
|
typedef struct Vp3Fragment {
|
2010-03-04 00:27:43 +01:00
|
|
|
int16_t dc;
|
2005-05-18 11:07:26 +02:00
|
|
|
uint8_t coding_method;
|
2009-05-29 23:43:22 +02:00
|
|
|
uint8_t qpi;
|
2003-05-05 04:54:15 +02:00
|
|
|
} Vp3Fragment;
|
|
|
|
|
|
|
|
#define SB_NOT_CODED 0
|
|
|
|
#define SB_PARTIALLY_CODED 1
|
|
|
|
#define SB_FULLY_CODED 2
|
|
|
|
|
2010-02-21 01:10:51 +01:00
|
|
|
// This is the maximum length of a single long bit run that can be encoded
|
|
|
|
// for superblock coding or block qps. Theora special-cases this to read a
|
|
|
|
// bit instead of flipping the current bit to allow for runs longer than 4129.
|
|
|
|
#define MAXIMUM_LONG_BIT_RUN 4129
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
#define MODE_INTER_NO_MV 0
|
|
|
|
#define MODE_INTRA 1
|
|
|
|
#define MODE_INTER_PLUS_MV 2
|
|
|
|
#define MODE_INTER_LAST_MV 3
|
|
|
|
#define MODE_INTER_PRIOR_LAST 4
|
|
|
|
#define MODE_USING_GOLDEN 5
|
|
|
|
#define MODE_GOLDEN_MV 6
|
|
|
|
#define MODE_INTER_FOURMV 7
|
|
|
|
#define CODING_MODE_COUNT 8
|
|
|
|
|
|
|
|
/* special internal mode */
|
|
|
|
#define MODE_COPY 8
|
|
|
|
|
|
|
|
/* There are 6 preset schemes, plus a free-form scheme */
|
2008-06-25 16:14:58 +02:00
|
|
|
static const int ModeAlphabet[6][CODING_MODE_COUNT] =
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
|
|
|
/* scheme 1: Last motion vector dominates */
|
2005-12-17 19:14:38 +01:00
|
|
|
{ MODE_INTER_LAST_MV, MODE_INTER_PRIOR_LAST,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_INTER_PLUS_MV, MODE_INTER_NO_MV,
|
2005-12-17 19:14:38 +01:00
|
|
|
MODE_INTRA, MODE_USING_GOLDEN,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_GOLDEN_MV, MODE_INTER_FOURMV },
|
|
|
|
|
|
|
|
/* scheme 2 */
|
2005-12-17 19:14:38 +01:00
|
|
|
{ MODE_INTER_LAST_MV, MODE_INTER_PRIOR_LAST,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_INTER_NO_MV, MODE_INTER_PLUS_MV,
|
2005-12-17 19:14:38 +01:00
|
|
|
MODE_INTRA, MODE_USING_GOLDEN,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_GOLDEN_MV, MODE_INTER_FOURMV },
|
|
|
|
|
|
|
|
/* scheme 3 */
|
2005-12-17 19:14:38 +01:00
|
|
|
{ MODE_INTER_LAST_MV, MODE_INTER_PLUS_MV,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_INTER_PRIOR_LAST, MODE_INTER_NO_MV,
|
2005-12-17 19:14:38 +01:00
|
|
|
MODE_INTRA, MODE_USING_GOLDEN,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_GOLDEN_MV, MODE_INTER_FOURMV },
|
|
|
|
|
|
|
|
/* scheme 4 */
|
2005-12-17 19:14:38 +01:00
|
|
|
{ MODE_INTER_LAST_MV, MODE_INTER_PLUS_MV,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_INTER_NO_MV, MODE_INTER_PRIOR_LAST,
|
2005-12-17 19:14:38 +01:00
|
|
|
MODE_INTRA, MODE_USING_GOLDEN,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_GOLDEN_MV, MODE_INTER_FOURMV },
|
|
|
|
|
|
|
|
/* scheme 5: No motion vector dominates */
|
2005-12-17 19:14:38 +01:00
|
|
|
{ MODE_INTER_NO_MV, MODE_INTER_LAST_MV,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_INTER_PRIOR_LAST, MODE_INTER_PLUS_MV,
|
2005-12-17 19:14:38 +01:00
|
|
|
MODE_INTRA, MODE_USING_GOLDEN,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_GOLDEN_MV, MODE_INTER_FOURMV },
|
|
|
|
|
|
|
|
/* scheme 6 */
|
2005-12-17 19:14:38 +01:00
|
|
|
{ MODE_INTER_NO_MV, MODE_USING_GOLDEN,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_INTER_LAST_MV, MODE_INTER_PRIOR_LAST,
|
2005-12-17 19:14:38 +01:00
|
|
|
MODE_INTER_PLUS_MV, MODE_INTRA,
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_GOLDEN_MV, MODE_INTER_FOURMV },
|
|
|
|
|
|
|
|
};
|
|
|
|
|
2010-03-04 00:27:40 +01:00
|
|
|
static const uint8_t hilbert_offset[16][2] = {
|
|
|
|
{0,0}, {1,0}, {1,1}, {0,1},
|
|
|
|
{0,2}, {0,3}, {1,3}, {1,2},
|
|
|
|
{2,2}, {2,3}, {3,3}, {3,2},
|
|
|
|
{3,1}, {2,1}, {2,0}, {3,0}
|
|
|
|
};
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
#define MIN_DEQUANT_VAL 2
|
|
|
|
|
|
|
|
typedef struct Vp3DecodeContext {
|
|
|
|
AVCodecContext *avctx;
|
2003-10-11 19:44:21 +02:00
|
|
|
int theora, theora_tables;
|
2003-12-08 12:32:06 +01:00
|
|
|
int version;
|
2003-05-05 04:54:15 +02:00
|
|
|
int width, height;
|
2010-03-13 06:59:22 +01:00
|
|
|
int chroma_x_shift, chroma_y_shift;
|
2003-05-05 04:54:15 +02:00
|
|
|
AVFrame golden_frame;
|
|
|
|
AVFrame last_frame;
|
|
|
|
AVFrame current_frame;
|
|
|
|
int keyframe;
|
|
|
|
DSPContext dsp;
|
2003-11-23 19:43:09 +01:00
|
|
|
int flipped_image;
|
2010-02-12 23:01:35 +01:00
|
|
|
int last_slice_end;
|
2010-05-27 06:39:12 +02:00
|
|
|
int skip_loop_filter;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2009-05-29 23:43:22 +02:00
|
|
|
int qps[3];
|
|
|
|
int nqps;
|
|
|
|
int last_qps[3];
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
int superblock_count;
|
2003-05-10 23:46:17 +02:00
|
|
|
int y_superblock_width;
|
|
|
|
int y_superblock_height;
|
2010-03-04 00:27:37 +01:00
|
|
|
int y_superblock_count;
|
2003-05-10 23:46:17 +02:00
|
|
|
int c_superblock_width;
|
|
|
|
int c_superblock_height;
|
2010-03-04 00:27:37 +01:00
|
|
|
int c_superblock_count;
|
2003-05-05 04:54:15 +02:00
|
|
|
int u_superblock_start;
|
|
|
|
int v_superblock_start;
|
|
|
|
unsigned char *superblock_coding;
|
|
|
|
|
|
|
|
int macroblock_count;
|
|
|
|
int macroblock_width;
|
|
|
|
int macroblock_height;
|
|
|
|
|
|
|
|
int fragment_count;
|
2010-03-13 06:56:15 +01:00
|
|
|
int fragment_width[2];
|
|
|
|
int fragment_height[2];
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
Vp3Fragment *all_fragments;
|
2006-07-19 22:57:44 +02:00
|
|
|
int fragment_start[3];
|
2010-02-12 23:01:38 +01:00
|
|
|
int data_offset[3];
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2010-03-13 11:25:41 +01:00
|
|
|
int8_t (*motion_val[2])[2];
|
|
|
|
|
2005-05-17 13:31:57 +02:00
|
|
|
ScanTable scantable;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-10-11 19:44:21 +02:00
|
|
|
/* tables */
|
|
|
|
uint16_t coded_dc_scale_factor[64];
|
2004-03-08 03:15:13 +01:00
|
|
|
uint32_t coded_ac_scale_factor[64];
|
2006-07-17 11:51:59 +02:00
|
|
|
uint8_t base_matrix[384][64];
|
|
|
|
uint8_t qr_count[2][3];
|
|
|
|
uint8_t qr_size [2][3][64];
|
|
|
|
uint16_t qr_base[2][3][64];
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
/**
|
|
|
|
* This is a list of all tokens in bitstream order. Reordering takes place
|
|
|
|
* by pulling from each level during IDCT. As a consequence, IDCT must be
|
|
|
|
* in Hilbert order, making the minimum slice height 64 for 4:2:0 and 32
|
|
|
|
* otherwise. The 32 different tokens with up to 12 bits of extradata are
|
|
|
|
* collapsed into 3 types, packed as follows:
|
|
|
|
* (from the low to high bits)
|
|
|
|
*
|
|
|
|
* 2 bits: type (0,1,2)
|
|
|
|
* 0: EOB run, 14 bits for run length (12 needed)
|
|
|
|
* 1: zero run, 7 bits for run length
|
|
|
|
* 7 bits for the next coefficient (3 needed)
|
|
|
|
* 2: coefficient, 14 bits (11 needed)
|
|
|
|
*
|
|
|
|
* Coefficients are signed, so are packed in the highest bits for automatic
|
|
|
|
* sign extension.
|
|
|
|
*/
|
|
|
|
int16_t *dct_tokens[3][64];
|
|
|
|
int16_t *dct_tokens_base;
|
|
|
|
#define TOKEN_EOB(eob_run) ((eob_run) << 2)
|
|
|
|
#define TOKEN_ZERO_RUN(coeff, zero_run) (((coeff) << 9) + ((zero_run) << 2) + 1)
|
|
|
|
#define TOKEN_COEFF(coeff) (((coeff) << 2) + 2)
|
|
|
|
|
|
|
|
/**
|
|
|
|
* number of blocks that contain DCT coefficients at the given level or higher
|
|
|
|
*/
|
|
|
|
int num_coded_frags[3][64];
|
|
|
|
int total_num_coded_frags;
|
|
|
|
|
2008-05-27 01:14:25 +02:00
|
|
|
/* this is a list of indexes into the all_fragments array indicating
|
2003-05-05 04:54:15 +02:00
|
|
|
* which of the fragments are coded */
|
2010-03-04 00:27:43 +01:00
|
|
|
int *coded_fragment_list[3];
|
2009-12-02 03:30:15 +01:00
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
VLC dc_vlc[16];
|
|
|
|
VLC ac_vlc_1[16];
|
|
|
|
VLC ac_vlc_2[16];
|
|
|
|
VLC ac_vlc_3[16];
|
|
|
|
VLC ac_vlc_4[16];
|
|
|
|
|
2005-05-18 01:39:23 +02:00
|
|
|
VLC superblock_run_length_vlc;
|
|
|
|
VLC fragment_run_length_vlc;
|
|
|
|
VLC mode_code_vlc;
|
|
|
|
VLC motion_vector_vlc;
|
|
|
|
|
2004-04-25 05:33:30 +02:00
|
|
|
/* these arrays need to be on 16-byte boundaries since SSE2 operations
|
|
|
|
* index into them */
|
2010-03-06 15:24:59 +01:00
|
|
|
DECLARE_ALIGNED(16, int16_t, qmat)[3][2][3][64]; //<qmat[qpi][is_inter][plane]
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
/* This table contains superblock_count * 16 entries. Each set of 16
|
2008-05-27 01:14:25 +02:00
|
|
|
* numbers corresponds to the fragment indexes 0..15 of the superblock.
|
2003-05-05 04:54:15 +02:00
|
|
|
* An entry will be -1 to indicate that no entry corresponds to that
|
|
|
|
* index. */
|
|
|
|
int *superblock_fragments;
|
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
/* This is an array that indicates how a particular macroblock
|
2003-05-12 06:28:35 +02:00
|
|
|
* is coded. */
|
2003-05-11 06:47:45 +02:00
|
|
|
unsigned char *macroblock_coding;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2003-08-19 19:10:00 +02:00
|
|
|
uint8_t edge_emu_buffer[9*2048]; //FIXME dynamic alloc
|
2006-09-27 21:47:39 +02:00
|
|
|
int8_t qscale_table[2048]; //FIXME dynamic alloc (width+15)/16
|
2005-05-20 01:59:10 +02:00
|
|
|
|
2005-05-21 07:20:52 +02:00
|
|
|
/* Huffman decode */
|
|
|
|
int hti;
|
|
|
|
unsigned int hbits;
|
|
|
|
int entries;
|
|
|
|
int huff_code_size;
|
2010-04-21 15:19:00 +02:00
|
|
|
uint32_t huffman_table[80][32][2];
|
2005-05-21 07:20:52 +02:00
|
|
|
|
2008-10-01 16:40:29 +02:00
|
|
|
uint8_t filter_limit_values[64];
|
2010-03-06 15:24:59 +01:00
|
|
|
DECLARE_ALIGNED(8, int, bounding_values_array)[256+2];
|
2003-05-05 04:54:15 +02:00
|
|
|
} Vp3DecodeContext;
|
|
|
|
|
|
|
|
/************************************************************************
|
|
|
|
* VP3 specific functions
|
|
|
|
************************************************************************/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function sets up all of the various blocks mappings:
|
|
|
|
* superblocks <-> fragments, macroblocks <-> fragments,
|
|
|
|
* superblocks <-> macroblocks
|
2003-05-10 23:46:17 +02:00
|
|
|
*
|
2010-06-30 17:38:06 +02:00
|
|
|
* @return 0 is successful; returns 1 if *anything* went wrong.
|
2003-05-05 04:54:15 +02:00
|
|
|
*/
|
2005-12-17 19:14:38 +01:00
|
|
|
static int init_block_mapping(Vp3DecodeContext *s)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
2010-03-13 06:56:01 +01:00
|
|
|
int sb_x, sb_y, plane;
|
|
|
|
int x, y, i, j = 0;
|
|
|
|
|
|
|
|
for (plane = 0; plane < 3; plane++) {
|
|
|
|
int sb_width = plane ? s->c_superblock_width : s->y_superblock_width;
|
|
|
|
int sb_height = plane ? s->c_superblock_height : s->y_superblock_height;
|
2010-03-13 06:56:15 +01:00
|
|
|
int frag_width = s->fragment_width[!!plane];
|
|
|
|
int frag_height = s->fragment_height[!!plane];
|
2010-03-13 06:56:01 +01:00
|
|
|
|
|
|
|
for (sb_y = 0; sb_y < sb_height; sb_y++)
|
|
|
|
for (sb_x = 0; sb_x < sb_width; sb_x++)
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
|
|
x = 4*sb_x + hilbert_offset[i][0];
|
|
|
|
y = 4*sb_y + hilbert_offset[i][1];
|
|
|
|
|
|
|
|
if (x < frag_width && y < frag_height)
|
|
|
|
s->superblock_fragments[j++] = s->fragment_start[plane] + y*frag_width + x;
|
|
|
|
else
|
|
|
|
s->superblock_fragments[j++] = -1;
|
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
2003-05-10 23:46:17 +02:00
|
|
|
return 0; /* successful path out */
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2005-05-21 07:20:52 +02:00
|
|
|
* This function sets up the dequantization tables used for a particular
|
2003-05-05 04:54:15 +02:00
|
|
|
* frame.
|
|
|
|
*/
|
2009-05-29 23:43:22 +02:00
|
|
|
static void init_dequantizer(Vp3DecodeContext *s, int qpi)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
2009-05-29 23:43:22 +02:00
|
|
|
int ac_scale_factor = s->coded_ac_scale_factor[s->qps[qpi]];
|
|
|
|
int dc_scale_factor = s->coded_dc_scale_factor[s->qps[qpi]];
|
2006-10-03 19:12:48 +02:00
|
|
|
int i, plane, inter, qri, bmi, bmj, qistart;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2006-07-17 11:51:59 +02:00
|
|
|
for(inter=0; inter<2; inter++){
|
|
|
|
for(plane=0; plane<3; plane++){
|
|
|
|
int sum=0;
|
|
|
|
for(qri=0; qri<s->qr_count[inter][plane]; qri++){
|
|
|
|
sum+= s->qr_size[inter][plane][qri];
|
2009-05-29 23:43:22 +02:00
|
|
|
if(s->qps[qpi] <= sum)
|
2006-07-17 11:51:59 +02:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
qistart= sum - s->qr_size[inter][plane][qri];
|
|
|
|
bmi= s->qr_base[inter][plane][qri ];
|
|
|
|
bmj= s->qr_base[inter][plane][qri+1];
|
|
|
|
for(i=0; i<64; i++){
|
2009-05-29 23:43:22 +02:00
|
|
|
int coeff= ( 2*(sum -s->qps[qpi])*s->base_matrix[bmi][i]
|
|
|
|
- 2*(qistart-s->qps[qpi])*s->base_matrix[bmj][i]
|
2006-07-17 11:51:59 +02:00
|
|
|
+ s->qr_size[inter][plane][qri])
|
|
|
|
/ (2*s->qr_size[inter][plane][qri]);
|
|
|
|
|
2006-07-17 13:06:09 +02:00
|
|
|
int qmin= 8<<(inter + !i);
|
2006-07-17 11:51:59 +02:00
|
|
|
int qscale= i ? ac_scale_factor : dc_scale_factor;
|
|
|
|
|
2009-05-29 23:43:22 +02:00
|
|
|
s->qmat[qpi][inter][plane][s->dsp.idct_permutation[i]]= av_clip((qscale * coeff)/100 * 4, qmin, 4096);
|
2006-07-17 11:51:59 +02:00
|
|
|
}
|
2009-05-29 23:43:22 +02:00
|
|
|
// all DC coefficients use the same quant so as not to interfere with DC prediction
|
|
|
|
s->qmat[qpi][inter][plane][0] = s->qmat[0][inter][plane][0];
|
2006-07-17 11:51:59 +02:00
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2009-05-29 23:43:22 +02:00
|
|
|
memset(s->qscale_table, (FFMAX(s->qmat[0][0][0][1], s->qmat[0][0][1][1])+8)/16, 512); //FIXME finetune
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
2005-05-21 07:20:52 +02:00
|
|
|
/*
|
|
|
|
* This function initializes the loop filter boundary limits if the frame's
|
|
|
|
* quality index is different from the previous frame's.
|
2009-07-05 20:25:58 +02:00
|
|
|
*
|
|
|
|
* The filter_limit_values may not be larger than 127.
|
2005-05-21 07:20:52 +02:00
|
|
|
*/
|
|
|
|
static void init_loop_filter(Vp3DecodeContext *s)
|
|
|
|
{
|
|
|
|
int *bounding_values= s->bounding_values_array+127;
|
|
|
|
int filter_limit;
|
|
|
|
int x;
|
2009-07-05 20:25:58 +02:00
|
|
|
int value;
|
2005-05-21 07:20:52 +02:00
|
|
|
|
2009-05-29 23:43:22 +02:00
|
|
|
filter_limit = s->filter_limit_values[s->qps[0]];
|
2005-05-21 07:20:52 +02:00
|
|
|
|
|
|
|
/* set up the bounding values */
|
|
|
|
memset(s->bounding_values_array, 0, 256 * sizeof(int));
|
|
|
|
for (x = 0; x < filter_limit; x++) {
|
|
|
|
bounding_values[-x] = -x;
|
|
|
|
bounding_values[x] = x;
|
|
|
|
}
|
2009-07-05 20:25:58 +02:00
|
|
|
for (x = value = filter_limit; x < 128 && value; x++, value--) {
|
|
|
|
bounding_values[ x] = value;
|
|
|
|
bounding_values[-x] = -value;
|
|
|
|
}
|
|
|
|
if (value)
|
|
|
|
bounding_values[128] = value;
|
2008-10-17 05:18:08 +02:00
|
|
|
bounding_values[129] = bounding_values[130] = filter_limit * 0x02020202;
|
2005-05-21 07:20:52 +02:00
|
|
|
}
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
/*
|
2005-12-17 19:14:38 +01:00
|
|
|
* This function unpacks all of the superblock/macroblock/fragment coding
|
2003-05-05 04:54:15 +02:00
|
|
|
* information from the bitstream.
|
|
|
|
*/
|
2003-05-10 23:46:17 +02:00
|
|
|
static int unpack_superblocks(Vp3DecodeContext *s, GetBitContext *gb)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
2010-03-04 11:01:03 +01:00
|
|
|
int superblock_starts[3] = { 0, s->u_superblock_start, s->v_superblock_start };
|
2003-05-05 04:54:15 +02:00
|
|
|
int bit = 0;
|
|
|
|
int current_superblock = 0;
|
|
|
|
int current_run = 0;
|
2010-02-21 01:10:54 +01:00
|
|
|
int num_partial_superblocks = 0;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
int i, j;
|
|
|
|
int current_fragment;
|
2010-03-04 00:27:37 +01:00
|
|
|
int plane;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
if (s->keyframe) {
|
|
|
|
memset(s->superblock_coding, SB_FULLY_CODED, s->superblock_count);
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
/* unpack the list of partially-coded superblocks */
|
2010-05-25 05:19:54 +02:00
|
|
|
bit = get_bits1(gb) ^ 1;
|
|
|
|
current_run = 0;
|
|
|
|
|
2010-04-16 14:21:44 +02:00
|
|
|
while (current_superblock < s->superblock_count && get_bits_left(gb) > 0) {
|
2010-05-25 05:19:54 +02:00
|
|
|
if (s->theora && current_run == MAXIMUM_LONG_BIT_RUN)
|
|
|
|
bit = get_bits1(gb);
|
|
|
|
else
|
|
|
|
bit ^= 1;
|
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
current_run = get_vlc2(gb,
|
2010-02-21 01:10:47 +01:00
|
|
|
s->superblock_run_length_vlc.table, 6, 2) + 1;
|
|
|
|
if (current_run == 34)
|
2005-05-18 02:11:49 +02:00
|
|
|
current_run += get_bits(gb, 12);
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-02-21 01:10:47 +01:00
|
|
|
if (current_superblock + current_run > s->superblock_count) {
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid partially coded superblock run length\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
memset(s->superblock_coding + current_superblock, bit, current_run);
|
|
|
|
|
|
|
|
current_superblock += current_run;
|
2010-02-21 01:10:54 +01:00
|
|
|
if (bit)
|
|
|
|
num_partial_superblocks += current_run;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* unpack the list of fully coded superblocks if any of the blocks were
|
|
|
|
* not marked as partially coded in the previous step */
|
2010-02-21 01:10:54 +01:00
|
|
|
if (num_partial_superblocks < s->superblock_count) {
|
|
|
|
int superblocks_decoded = 0;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
current_superblock = 0;
|
2010-05-25 05:19:54 +02:00
|
|
|
bit = get_bits1(gb) ^ 1;
|
|
|
|
current_run = 0;
|
|
|
|
|
2010-04-16 14:21:44 +02:00
|
|
|
while (superblocks_decoded < s->superblock_count - num_partial_superblocks
|
|
|
|
&& get_bits_left(gb) > 0) {
|
2010-05-25 05:19:54 +02:00
|
|
|
|
|
|
|
if (s->theora && current_run == MAXIMUM_LONG_BIT_RUN)
|
|
|
|
bit = get_bits1(gb);
|
|
|
|
else
|
|
|
|
bit ^= 1;
|
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
current_run = get_vlc2(gb,
|
2010-02-21 01:10:54 +01:00
|
|
|
s->superblock_run_length_vlc.table, 6, 2) + 1;
|
|
|
|
if (current_run == 34)
|
2005-05-18 02:11:49 +02:00
|
|
|
current_run += get_bits(gb, 12);
|
2010-02-21 01:10:54 +01:00
|
|
|
|
|
|
|
for (j = 0; j < current_run; current_superblock++) {
|
|
|
|
if (current_superblock >= s->superblock_count) {
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid fully coded superblock run length\n");
|
|
|
|
return -1;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
2010-02-21 01:10:54 +01:00
|
|
|
|
|
|
|
/* skip any superblocks already marked as partially coded */
|
|
|
|
if (s->superblock_coding[current_superblock] == SB_NOT_CODED) {
|
2005-05-18 10:48:11 +02:00
|
|
|
s->superblock_coding[current_superblock] = 2*bit;
|
2010-02-21 01:10:54 +01:00
|
|
|
j++;
|
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
2010-02-21 01:10:54 +01:00
|
|
|
superblocks_decoded += current_run;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* if there were partial blocks, initialize bitstream for
|
|
|
|
* unpacking fragment codings */
|
2010-02-21 01:10:54 +01:00
|
|
|
if (num_partial_superblocks) {
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
current_run = 0;
|
2007-08-09 02:13:31 +02:00
|
|
|
bit = get_bits1(gb);
|
2005-12-17 19:14:38 +01:00
|
|
|
/* toggle the bit because as soon as the first run length is
|
2003-05-05 04:54:15 +02:00
|
|
|
* fetched the bit will be toggled again */
|
|
|
|
bit ^= 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* figure out which fragments are coded; iterate through each
|
|
|
|
* superblock (all planes) */
|
2010-03-04 00:27:43 +01:00
|
|
|
s->total_num_coded_frags = 0;
|
2003-05-11 06:47:45 +02:00
|
|
|
memset(s->macroblock_coding, MODE_COPY, s->macroblock_count);
|
2010-03-04 00:27:37 +01:00
|
|
|
|
|
|
|
for (plane = 0; plane < 3; plane++) {
|
2010-03-04 11:01:03 +01:00
|
|
|
int sb_start = superblock_starts[plane];
|
2010-03-04 00:27:37 +01:00
|
|
|
int sb_end = sb_start + (plane ? s->c_superblock_count : s->y_superblock_count);
|
2010-03-04 00:27:43 +01:00
|
|
|
int num_coded_frags = 0;
|
2010-03-04 00:27:37 +01:00
|
|
|
|
2010-04-16 14:21:44 +02:00
|
|
|
for (i = sb_start; i < sb_end && get_bits_left(gb) > 0; i++) {
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
/* iterate through all 16 fragments in a superblock */
|
|
|
|
for (j = 0; j < 16; j++) {
|
|
|
|
|
|
|
|
/* if the fragment is in bounds, check its coding status */
|
|
|
|
current_fragment = s->superblock_fragments[i * 16 + j];
|
|
|
|
if (current_fragment != -1) {
|
2010-02-21 01:11:01 +01:00
|
|
|
int coded = s->superblock_coding[i];
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-02-21 01:11:01 +01:00
|
|
|
if (s->superblock_coding[i] == SB_PARTIALLY_CODED) {
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
/* fragment may or may not be coded; this is the case
|
|
|
|
* that cares about the fragment coding runs */
|
2005-05-18 10:48:11 +02:00
|
|
|
if (current_run-- == 0) {
|
2003-05-05 04:54:15 +02:00
|
|
|
bit ^= 1;
|
2005-12-17 19:14:38 +01:00
|
|
|
current_run = get_vlc2(gb,
|
2005-05-18 10:48:11 +02:00
|
|
|
s->fragment_run_length_vlc.table, 5, 2);
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
2010-02-21 01:11:01 +01:00
|
|
|
coded = bit;
|
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-02-21 01:11:01 +01:00
|
|
|
if (coded) {
|
2005-12-17 19:14:38 +01:00
|
|
|
/* default mode; actual mode will be decoded in
|
2003-05-19 03:22:46 +02:00
|
|
|
* the next phase */
|
2005-12-17 19:14:38 +01:00
|
|
|
s->all_fragments[current_fragment].coding_method =
|
2003-05-05 04:54:15 +02:00
|
|
|
MODE_INTER_NO_MV;
|
2010-03-04 00:27:43 +01:00
|
|
|
s->coded_fragment_list[plane][num_coded_frags++] =
|
2003-05-05 04:54:15 +02:00
|
|
|
current_fragment;
|
|
|
|
} else {
|
|
|
|
/* not coded; copy this fragment from the prior frame */
|
|
|
|
s->all_fragments[current_fragment].coding_method =
|
|
|
|
MODE_COPY;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2010-03-04 00:27:43 +01:00
|
|
|
s->total_num_coded_frags += num_coded_frags;
|
|
|
|
for (i = 0; i < 64; i++)
|
|
|
|
s->num_coded_frags[plane][i] = num_coded_frags;
|
|
|
|
if (plane < 2)
|
|
|
|
s->coded_fragment_list[plane+1] = s->coded_fragment_list[plane] + num_coded_frags;
|
2010-03-04 00:27:37 +01:00
|
|
|
}
|
2003-05-10 23:46:17 +02:00
|
|
|
return 0;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function unpacks all the coding mode data for individual macroblocks
|
|
|
|
* from the bitstream.
|
|
|
|
*/
|
2003-05-10 23:46:17 +02:00
|
|
|
static int unpack_modes(Vp3DecodeContext *s, GetBitContext *gb)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
2010-02-13 19:55:17 +01:00
|
|
|
int i, j, k, sb_x, sb_y;
|
2003-05-05 04:54:15 +02:00
|
|
|
int scheme;
|
|
|
|
int current_macroblock;
|
|
|
|
int current_fragment;
|
|
|
|
int coding_mode;
|
2008-06-25 16:14:58 +02:00
|
|
|
int custom_mode_alphabet[CODING_MODE_COUNT];
|
2010-02-13 19:59:21 +01:00
|
|
|
const int *alphabet;
|
2010-03-13 06:59:22 +01:00
|
|
|
Vp3Fragment *frag;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
if (s->keyframe) {
|
|
|
|
for (i = 0; i < s->fragment_count; i++)
|
|
|
|
s->all_fragments[i].coding_method = MODE_INTRA;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
/* fetch the mode coding scheme for this frame */
|
|
|
|
scheme = get_bits(gb, 3);
|
|
|
|
|
|
|
|
/* is it a custom coding scheme? */
|
|
|
|
if (scheme == 0) {
|
2009-02-03 23:59:47 +01:00
|
|
|
for (i = 0; i < 8; i++)
|
|
|
|
custom_mode_alphabet[i] = MODE_INTER_NO_MV;
|
2003-05-05 04:54:15 +02:00
|
|
|
for (i = 0; i < 8; i++)
|
2008-06-25 16:14:58 +02:00
|
|
|
custom_mode_alphabet[get_bits(gb, 3)] = i;
|
2010-02-13 19:59:21 +01:00
|
|
|
alphabet = custom_mode_alphabet;
|
|
|
|
} else
|
|
|
|
alphabet = ModeAlphabet[scheme-1];
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
/* iterate through all of the macroblocks that contain 1 or more
|
|
|
|
* coded fragments */
|
2010-02-13 19:55:17 +01:00
|
|
|
for (sb_y = 0; sb_y < s->y_superblock_height; sb_y++) {
|
|
|
|
for (sb_x = 0; sb_x < s->y_superblock_width; sb_x++) {
|
2010-04-16 14:21:44 +02:00
|
|
|
if (get_bits_left(gb) <= 0)
|
|
|
|
return -1;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
for (j = 0; j < 4; j++) {
|
2010-02-13 19:55:17 +01:00
|
|
|
int mb_x = 2*sb_x + (j>>1);
|
|
|
|
int mb_y = 2*sb_y + (((j>>1)+j)&1);
|
|
|
|
current_macroblock = mb_y * s->macroblock_width + mb_x;
|
|
|
|
|
2010-02-13 19:55:24 +01:00
|
|
|
if (mb_x >= s->macroblock_width || mb_y >= s->macroblock_height)
|
2003-05-05 04:54:15 +02:00
|
|
|
continue;
|
|
|
|
|
2010-02-13 19:55:21 +01:00
|
|
|
#define BLOCK_X (2*mb_x + (k&1))
|
|
|
|
#define BLOCK_Y (2*mb_y + (k>>1))
|
2010-02-13 19:55:24 +01:00
|
|
|
/* coding modes are only stored if the macroblock has at least one
|
|
|
|
* luma block coded, otherwise it must be INTER_NO_MV */
|
|
|
|
for (k = 0; k < 4; k++) {
|
2010-03-13 06:56:15 +01:00
|
|
|
current_fragment = BLOCK_Y*s->fragment_width[0] + BLOCK_X;
|
2010-02-13 19:55:24 +01:00
|
|
|
if (s->all_fragments[current_fragment].coding_method != MODE_COPY)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (k == 4) {
|
|
|
|
s->macroblock_coding[current_macroblock] = MODE_INTER_NO_MV;
|
|
|
|
continue;
|
|
|
|
}
|
2010-02-13 19:55:21 +01:00
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
/* mode 7 means get 3 bits for each coding mode */
|
|
|
|
if (scheme == 7)
|
|
|
|
coding_mode = get_bits(gb, 3);
|
|
|
|
else
|
2010-02-13 19:59:21 +01:00
|
|
|
coding_mode = alphabet
|
2005-05-18 01:39:23 +02:00
|
|
|
[get_vlc2(gb, s->mode_code_vlc.table, 3, 3)];
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2003-05-11 06:47:45 +02:00
|
|
|
s->macroblock_coding[current_macroblock] = coding_mode;
|
2010-02-13 19:55:21 +01:00
|
|
|
for (k = 0; k < 4; k++) {
|
2010-03-13 06:59:22 +01:00
|
|
|
frag = s->all_fragments + BLOCK_Y*s->fragment_width[0] + BLOCK_X;
|
|
|
|
if (frag->coding_method != MODE_COPY)
|
|
|
|
frag->coding_method = coding_mode;
|
2010-02-13 19:55:21 +01:00
|
|
|
}
|
2010-03-13 06:59:22 +01:00
|
|
|
|
|
|
|
#define SET_CHROMA_MODES \
|
|
|
|
if (frag[s->fragment_start[1]].coding_method != MODE_COPY) \
|
|
|
|
frag[s->fragment_start[1]].coding_method = coding_mode;\
|
|
|
|
if (frag[s->fragment_start[2]].coding_method != MODE_COPY) \
|
|
|
|
frag[s->fragment_start[2]].coding_method = coding_mode;
|
|
|
|
|
|
|
|
if (s->chroma_y_shift) {
|
|
|
|
frag = s->all_fragments + mb_y*s->fragment_width[1] + mb_x;
|
|
|
|
SET_CHROMA_MODES
|
|
|
|
} else if (s->chroma_x_shift) {
|
|
|
|
frag = s->all_fragments + 2*mb_y*s->fragment_width[1] + mb_x;
|
|
|
|
for (k = 0; k < 2; k++) {
|
|
|
|
SET_CHROMA_MODES
|
|
|
|
frag += s->fragment_width[1];
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
for (k = 0; k < 4; k++) {
|
|
|
|
frag = s->all_fragments + BLOCK_Y*s->fragment_width[1] + BLOCK_X;
|
|
|
|
SET_CHROMA_MODES
|
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
}
|
2010-02-13 19:55:17 +01:00
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
}
|
2003-05-10 23:46:17 +02:00
|
|
|
|
|
|
|
return 0;
|
2003-05-07 04:30:37 +02:00
|
|
|
}
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
/*
|
|
|
|
* This function unpacks all the motion vectors for the individual
|
|
|
|
* macroblocks from the bitstream.
|
|
|
|
*/
|
2003-05-10 23:46:17 +02:00
|
|
|
static int unpack_vectors(Vp3DecodeContext *s, GetBitContext *gb)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
2010-02-13 19:55:27 +01:00
|
|
|
int j, k, sb_x, sb_y;
|
2003-05-05 04:54:15 +02:00
|
|
|
int coding_mode;
|
2010-03-13 06:56:11 +01:00
|
|
|
int motion_x[4];
|
|
|
|
int motion_y[4];
|
2003-05-05 04:54:15 +02:00
|
|
|
int last_motion_x = 0;
|
|
|
|
int last_motion_y = 0;
|
|
|
|
int prior_last_motion_x = 0;
|
|
|
|
int prior_last_motion_y = 0;
|
|
|
|
int current_macroblock;
|
|
|
|
int current_fragment;
|
2010-03-13 11:25:41 +01:00
|
|
|
int frag;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2008-10-01 16:48:16 +02:00
|
|
|
if (s->keyframe)
|
2008-10-01 16:48:00 +02:00
|
|
|
return 0;
|
2008-10-01 16:48:35 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
/* coding mode 0 is the VLC scheme; 1 is the fixed code scheme */
|
|
|
|
coding_mode = get_bits1(gb);
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
/* iterate through all of the macroblocks that contain 1 or more
|
|
|
|
* coded fragments */
|
2010-02-13 19:55:17 +01:00
|
|
|
for (sb_y = 0; sb_y < s->y_superblock_height; sb_y++) {
|
|
|
|
for (sb_x = 0; sb_x < s->y_superblock_width; sb_x++) {
|
2010-04-16 14:21:44 +02:00
|
|
|
if (get_bits_left(gb) <= 0)
|
|
|
|
return -1;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
for (j = 0; j < 4; j++) {
|
2010-02-13 19:55:17 +01:00
|
|
|
int mb_x = 2*sb_x + (j>>1);
|
|
|
|
int mb_y = 2*sb_y + (((j>>1)+j)&1);
|
|
|
|
current_macroblock = mb_y * s->macroblock_width + mb_x;
|
|
|
|
|
|
|
|
if (mb_x >= s->macroblock_width || mb_y >= s->macroblock_height ||
|
2008-10-01 16:48:54 +02:00
|
|
|
(s->macroblock_coding[current_macroblock] == MODE_COPY))
|
|
|
|
continue;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
switch (s->macroblock_coding[current_macroblock]) {
|
|
|
|
|
|
|
|
case MODE_INTER_PLUS_MV:
|
|
|
|
case MODE_GOLDEN_MV:
|
|
|
|
/* all 6 fragments use the same motion vector */
|
|
|
|
if (coding_mode == 0) {
|
|
|
|
motion_x[0] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
|
|
|
|
motion_y[0] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
|
|
|
|
} else {
|
|
|
|
motion_x[0] = fixed_motion_vector_table[get_bits(gb, 6)];
|
|
|
|
motion_y[0] = fixed_motion_vector_table[get_bits(gb, 6)];
|
2003-05-10 23:46:17 +02:00
|
|
|
}
|
2005-05-21 03:12:41 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
/* vector maintenance, only on MODE_INTER_PLUS_MV */
|
|
|
|
if (s->macroblock_coding[current_macroblock] ==
|
|
|
|
MODE_INTER_PLUS_MV) {
|
2008-09-03 02:10:30 +02:00
|
|
|
prior_last_motion_x = last_motion_x;
|
|
|
|
prior_last_motion_y = last_motion_y;
|
2008-10-01 16:48:54 +02:00
|
|
|
last_motion_x = motion_x[0];
|
|
|
|
last_motion_y = motion_y[0];
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MODE_INTER_FOURMV:
|
|
|
|
/* vector maintenance */
|
|
|
|
prior_last_motion_x = last_motion_x;
|
|
|
|
prior_last_motion_y = last_motion_y;
|
|
|
|
|
|
|
|
/* fetch 4 vectors from the bitstream, one for each
|
|
|
|
* Y fragment, then average for the C fragment vectors */
|
|
|
|
for (k = 0; k < 4; k++) {
|
2010-03-13 06:56:15 +01:00
|
|
|
current_fragment = BLOCK_Y*s->fragment_width[0] + BLOCK_X;
|
2010-02-13 19:55:27 +01:00
|
|
|
if (s->all_fragments[current_fragment].coding_method != MODE_COPY) {
|
2008-10-01 16:48:54 +02:00
|
|
|
if (coding_mode == 0) {
|
|
|
|
motion_x[k] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
|
|
|
|
motion_y[k] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
|
2008-09-03 02:17:11 +02:00
|
|
|
} else {
|
2008-10-01 16:48:54 +02:00
|
|
|
motion_x[k] = fixed_motion_vector_table[get_bits(gb, 6)];
|
|
|
|
motion_y[k] = fixed_motion_vector_table[get_bits(gb, 6)];
|
2008-09-03 02:17:11 +02:00
|
|
|
}
|
2008-10-01 16:48:54 +02:00
|
|
|
last_motion_x = motion_x[k];
|
|
|
|
last_motion_y = motion_y[k];
|
|
|
|
} else {
|
|
|
|
motion_x[k] = 0;
|
|
|
|
motion_y[k] = 0;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
2008-10-01 16:48:54 +02:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MODE_INTER_LAST_MV:
|
|
|
|
/* all 6 fragments use the last motion vector */
|
|
|
|
motion_x[0] = last_motion_x;
|
|
|
|
motion_y[0] = last_motion_y;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
/* no vector maintenance (last vector remains the
|
|
|
|
* last vector) */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MODE_INTER_PRIOR_LAST:
|
|
|
|
/* all 6 fragments use the motion vector prior to the
|
|
|
|
* last motion vector */
|
|
|
|
motion_x[0] = prior_last_motion_x;
|
|
|
|
motion_y[0] = prior_last_motion_y;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
/* vector maintenance */
|
|
|
|
prior_last_motion_x = last_motion_x;
|
|
|
|
prior_last_motion_y = last_motion_y;
|
|
|
|
last_motion_x = motion_x[0];
|
|
|
|
last_motion_y = motion_y[0];
|
|
|
|
break;
|
2003-05-07 04:30:37 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
default:
|
|
|
|
/* covers intra, inter without MV, golden without MV */
|
2009-12-19 08:33:10 +01:00
|
|
|
motion_x[0] = 0;
|
|
|
|
motion_y[0] = 0;
|
2003-05-07 04:30:37 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
/* no vector maintenance */
|
|
|
|
break;
|
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2008-10-01 16:48:54 +02:00
|
|
|
/* assign the motion vectors to the correct fragments */
|
2010-02-13 19:55:21 +01:00
|
|
|
for (k = 0; k < 4; k++) {
|
2008-10-01 16:48:54 +02:00
|
|
|
current_fragment =
|
2010-03-13 06:56:15 +01:00
|
|
|
BLOCK_Y*s->fragment_width[0] + BLOCK_X;
|
2009-12-19 08:33:10 +01:00
|
|
|
if (s->macroblock_coding[current_macroblock] == MODE_INTER_FOURMV) {
|
2010-03-13 11:25:41 +01:00
|
|
|
s->motion_val[0][current_fragment][0] = motion_x[k];
|
|
|
|
s->motion_val[0][current_fragment][1] = motion_y[k];
|
2009-12-19 08:33:10 +01:00
|
|
|
} else {
|
2010-03-13 11:25:41 +01:00
|
|
|
s->motion_val[0][current_fragment][0] = motion_x[0];
|
|
|
|
s->motion_val[0][current_fragment][1] = motion_y[0];
|
2009-12-19 08:33:10 +01:00
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
2010-03-13 06:59:22 +01:00
|
|
|
|
|
|
|
if (s->chroma_y_shift) {
|
2010-03-13 06:56:11 +01:00
|
|
|
if (s->macroblock_coding[current_macroblock] == MODE_INTER_FOURMV) {
|
|
|
|
motion_x[0] = RSHIFT(motion_x[0] + motion_x[1] + motion_x[2] + motion_x[3], 2);
|
|
|
|
motion_y[0] = RSHIFT(motion_y[0] + motion_y[1] + motion_y[2] + motion_y[3], 2);
|
|
|
|
}
|
2010-03-13 06:59:22 +01:00
|
|
|
motion_x[0] = (motion_x[0]>>1) | (motion_x[0]&1);
|
|
|
|
motion_y[0] = (motion_y[0]>>1) | (motion_y[0]&1);
|
2010-03-13 11:25:41 +01:00
|
|
|
frag = mb_y*s->fragment_width[1] + mb_x;
|
|
|
|
s->motion_val[1][frag][0] = motion_x[0];
|
|
|
|
s->motion_val[1][frag][1] = motion_y[0];
|
2010-03-13 06:59:22 +01:00
|
|
|
} else if (s->chroma_x_shift) {
|
|
|
|
if (s->macroblock_coding[current_macroblock] == MODE_INTER_FOURMV) {
|
|
|
|
motion_x[0] = RSHIFT(motion_x[0] + motion_x[1], 1);
|
|
|
|
motion_y[0] = RSHIFT(motion_y[0] + motion_y[1], 1);
|
|
|
|
motion_x[1] = RSHIFT(motion_x[2] + motion_x[3], 1);
|
|
|
|
motion_y[1] = RSHIFT(motion_y[2] + motion_y[3], 1);
|
|
|
|
} else {
|
|
|
|
motion_x[1] = motion_x[0];
|
|
|
|
motion_y[1] = motion_y[0];
|
|
|
|
}
|
|
|
|
motion_x[0] = (motion_x[0]>>1) | (motion_x[0]&1);
|
|
|
|
motion_x[1] = (motion_x[1]>>1) | (motion_x[1]&1);
|
|
|
|
|
2010-03-13 11:25:41 +01:00
|
|
|
frag = 2*mb_y*s->fragment_width[1] + mb_x;
|
2010-03-13 06:59:22 +01:00
|
|
|
for (k = 0; k < 2; k++) {
|
2010-03-13 11:25:41 +01:00
|
|
|
s->motion_val[1][frag][0] = motion_x[k];
|
|
|
|
s->motion_val[1][frag][1] = motion_y[k];
|
2010-03-13 06:59:22 +01:00
|
|
|
frag += s->fragment_width[1];
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
for (k = 0; k < 4; k++) {
|
2010-03-13 11:25:41 +01:00
|
|
|
frag = BLOCK_Y*s->fragment_width[1] + BLOCK_X;
|
2010-03-13 06:59:22 +01:00
|
|
|
if (s->macroblock_coding[current_macroblock] == MODE_INTER_FOURMV) {
|
2010-03-13 11:25:41 +01:00
|
|
|
s->motion_val[1][frag][0] = motion_x[k];
|
|
|
|
s->motion_val[1][frag][1] = motion_y[k];
|
2010-03-13 06:59:22 +01:00
|
|
|
} else {
|
2010-03-13 11:25:41 +01:00
|
|
|
s->motion_val[1][frag][0] = motion_x[0];
|
|
|
|
s->motion_val[1][frag][1] = motion_y[0];
|
2010-03-13 06:59:22 +01:00
|
|
|
}
|
|
|
|
}
|
2010-02-13 19:55:21 +01:00
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
2010-02-13 19:55:17 +01:00
|
|
|
}
|
2008-10-01 16:48:54 +02:00
|
|
|
}
|
2003-05-10 23:46:17 +02:00
|
|
|
|
|
|
|
return 0;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
2009-05-29 23:43:22 +02:00
|
|
|
static int unpack_block_qpis(Vp3DecodeContext *s, GetBitContext *gb)
|
|
|
|
{
|
|
|
|
int qpi, i, j, bit, run_length, blocks_decoded, num_blocks_at_qpi;
|
2010-03-04 00:27:43 +01:00
|
|
|
int num_blocks = s->total_num_coded_frags;
|
2009-05-29 23:43:22 +02:00
|
|
|
|
|
|
|
for (qpi = 0; qpi < s->nqps-1 && num_blocks > 0; qpi++) {
|
|
|
|
i = blocks_decoded = num_blocks_at_qpi = 0;
|
|
|
|
|
2010-05-25 05:19:54 +02:00
|
|
|
bit = get_bits1(gb) ^ 1;
|
|
|
|
run_length = 0;
|
2009-05-29 23:43:22 +02:00
|
|
|
|
|
|
|
do {
|
2010-05-25 05:19:54 +02:00
|
|
|
if (run_length == MAXIMUM_LONG_BIT_RUN)
|
|
|
|
bit = get_bits1(gb);
|
|
|
|
else
|
|
|
|
bit ^= 1;
|
|
|
|
|
2009-05-29 23:43:22 +02:00
|
|
|
run_length = get_vlc2(gb, s->superblock_run_length_vlc.table, 6, 2) + 1;
|
|
|
|
if (run_length == 34)
|
|
|
|
run_length += get_bits(gb, 12);
|
|
|
|
blocks_decoded += run_length;
|
|
|
|
|
|
|
|
if (!bit)
|
|
|
|
num_blocks_at_qpi += run_length;
|
|
|
|
|
|
|
|
for (j = 0; j < run_length; i++) {
|
2010-03-04 00:27:43 +01:00
|
|
|
if (i >= s->total_num_coded_frags)
|
2009-05-29 23:43:22 +02:00
|
|
|
return -1;
|
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
if (s->all_fragments[s->coded_fragment_list[0][i]].qpi == qpi) {
|
|
|
|
s->all_fragments[s->coded_fragment_list[0][i]].qpi += bit;
|
2009-05-29 23:43:22 +02:00
|
|
|
j++;
|
|
|
|
}
|
|
|
|
}
|
2010-04-16 14:21:44 +02:00
|
|
|
} while (blocks_decoded < num_blocks && get_bits_left(gb) > 0);
|
2009-05-29 23:43:22 +02:00
|
|
|
|
|
|
|
num_blocks -= num_blocks_at_qpi;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
/*
|
2003-05-05 04:54:15 +02:00
|
|
|
* This function is called by unpack_dct_coeffs() to extract the VLCs from
|
|
|
|
* the bitstream. The VLCs encode tokens which are used to unpack DCT
|
|
|
|
* data. This function unpacks all the VLCs for either the Y plane or both
|
|
|
|
* C planes, and is called for DC coefficients or different AC coefficient
|
|
|
|
* levels (since different coefficient types require different VLC tables.
|
|
|
|
*
|
|
|
|
* This function returns a residual eob run. E.g, if a particular token gave
|
|
|
|
* instructions to EOB the next 5 fragments and there were only 2 fragments
|
|
|
|
* left in the current fragment range, 3 would be returned so that it could
|
|
|
|
* be passed into the next call to this same function.
|
|
|
|
*/
|
|
|
|
static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
|
|
|
|
VLC *table, int coeff_index,
|
2010-03-04 00:27:43 +01:00
|
|
|
int plane,
|
2003-05-05 04:54:15 +02:00
|
|
|
int eob_run)
|
|
|
|
{
|
2010-03-04 00:27:43 +01:00
|
|
|
int i, j = 0;
|
2003-05-05 04:54:15 +02:00
|
|
|
int token;
|
2005-05-19 04:43:21 +02:00
|
|
|
int zero_run = 0;
|
|
|
|
DCTELEM coeff = 0;
|
|
|
|
int bits_to_get;
|
2010-03-04 00:27:43 +01:00
|
|
|
int blocks_ended;
|
|
|
|
int coeff_i = 0;
|
|
|
|
int num_coeffs = s->num_coded_frags[plane][coeff_index];
|
|
|
|
int16_t *dct_tokens = s->dct_tokens[plane][coeff_index];
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2009-09-21 03:37:50 +02:00
|
|
|
/* local references to structure members to avoid repeated deferences */
|
2010-03-04 00:27:43 +01:00
|
|
|
int *coded_fragment_list = s->coded_fragment_list[plane];
|
2009-09-21 03:37:50 +02:00
|
|
|
Vp3Fragment *all_fragments = s->all_fragments;
|
|
|
|
VLC_TYPE (*vlc_table)[2] = table->table;
|
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
if (num_coeffs < 0)
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid number of coefficents at level %d\n", coeff_index);
|
|
|
|
|
|
|
|
if (eob_run > num_coeffs) {
|
|
|
|
coeff_i = blocks_ended = num_coeffs;
|
|
|
|
eob_run -= num_coeffs;
|
2009-12-02 03:30:15 +01:00
|
|
|
} else {
|
2010-03-04 00:27:43 +01:00
|
|
|
coeff_i = blocks_ended = eob_run;
|
|
|
|
eob_run = 0;
|
2003-05-12 06:28:35 +02:00
|
|
|
}
|
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
// insert fake EOB token to cover the split between planes or zzi
|
|
|
|
if (blocks_ended)
|
|
|
|
dct_tokens[j++] = blocks_ended << 2;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-03-10 01:59:32 +01:00
|
|
|
while (coeff_i < num_coeffs && get_bits_left(gb) > 0) {
|
2003-05-05 04:54:15 +02:00
|
|
|
/* decode a VLC into a token */
|
2010-04-21 15:19:00 +02:00
|
|
|
token = get_vlc2(gb, vlc_table, 11, 3);
|
2003-05-05 04:54:15 +02:00
|
|
|
/* use the token to get a zero run, a coefficient, and an eob run */
|
2005-05-19 04:43:21 +02:00
|
|
|
if (token <= 6) {
|
|
|
|
eob_run = eob_run_base[token];
|
|
|
|
if (eob_run_get_bits[token])
|
|
|
|
eob_run += get_bits(gb, eob_run_get_bits[token]);
|
2010-03-04 00:27:43 +01:00
|
|
|
|
|
|
|
// record only the number of blocks ended in this plane,
|
|
|
|
// any spill will be recorded in the next plane.
|
|
|
|
if (eob_run > num_coeffs - coeff_i) {
|
|
|
|
dct_tokens[j++] = TOKEN_EOB(num_coeffs - coeff_i);
|
|
|
|
blocks_ended += num_coeffs - coeff_i;
|
|
|
|
eob_run -= num_coeffs - coeff_i;
|
|
|
|
coeff_i = num_coeffs;
|
|
|
|
} else {
|
|
|
|
dct_tokens[j++] = TOKEN_EOB(eob_run);
|
|
|
|
blocks_ended += eob_run;
|
|
|
|
coeff_i += eob_run;
|
|
|
|
eob_run = 0;
|
|
|
|
}
|
2005-05-19 04:43:21 +02:00
|
|
|
} else {
|
|
|
|
bits_to_get = coeff_get_bits[token];
|
2009-09-23 07:38:12 +02:00
|
|
|
if (bits_to_get)
|
|
|
|
bits_to_get = get_bits(gb, bits_to_get);
|
|
|
|
coeff = coeff_tables[token][bits_to_get];
|
2005-05-19 04:43:21 +02:00
|
|
|
|
|
|
|
zero_run = zero_run_base[token];
|
|
|
|
if (zero_run_get_bits[token])
|
|
|
|
zero_run += get_bits(gb, zero_run_get_bits[token]);
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
if (zero_run) {
|
|
|
|
dct_tokens[j++] = TOKEN_ZERO_RUN(coeff, zero_run);
|
|
|
|
} else {
|
|
|
|
// Save DC into the fragment structure. DC prediction is
|
|
|
|
// done in raster order, so the actual DC can't be in with
|
|
|
|
// other tokens. We still need the token in dct_tokens[]
|
|
|
|
// however, or else the structure collapses on itself.
|
|
|
|
if (!coeff_index)
|
|
|
|
all_fragments[coded_fragment_list[coeff_i]].dc = coeff;
|
|
|
|
|
|
|
|
dct_tokens[j++] = TOKEN_COEFF(coeff);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (coeff_index + zero_run > 64) {
|
2010-03-09 01:29:09 +01:00
|
|
|
av_log(s->avctx, AV_LOG_DEBUG, "Invalid zero run of %d with"
|
2010-03-04 00:27:43 +01:00
|
|
|
" %d coeffs left\n", zero_run, 64-coeff_index);
|
|
|
|
zero_run = 64 - coeff_index;
|
|
|
|
}
|
2009-12-02 03:30:15 +01:00
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
// zero runs code multiple coefficients,
|
|
|
|
// so don't try to decode coeffs for those higher levels
|
|
|
|
for (i = coeff_index+1; i <= coeff_index+zero_run; i++)
|
|
|
|
s->num_coded_frags[plane][i]--;
|
|
|
|
coeff_i++;
|
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
if (blocks_ended > s->num_coded_frags[plane][coeff_index])
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "More blocks ended than coded!\n");
|
|
|
|
|
|
|
|
// decrement the number of blocks that have higher coeffecients for each
|
|
|
|
// EOB run at this level
|
|
|
|
if (blocks_ended)
|
|
|
|
for (i = coeff_index+1; i < 64; i++)
|
|
|
|
s->num_coded_frags[plane][i] -= blocks_ended;
|
|
|
|
|
|
|
|
// setup the next buffer
|
|
|
|
if (plane < 2)
|
|
|
|
s->dct_tokens[plane+1][coeff_index] = dct_tokens + j;
|
|
|
|
else if (coeff_index < 63)
|
|
|
|
s->dct_tokens[0][coeff_index+1] = dct_tokens + j;
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
return eob_run;
|
|
|
|
}
|
|
|
|
|
2009-09-22 17:58:08 +02:00
|
|
|
static void reverse_dc_prediction(Vp3DecodeContext *s,
|
|
|
|
int first_fragment,
|
|
|
|
int fragment_width,
|
|
|
|
int fragment_height);
|
2003-05-05 04:54:15 +02:00
|
|
|
/*
|
|
|
|
* This function unpacks all of the DCT coefficient data from the
|
|
|
|
* bitstream.
|
|
|
|
*/
|
2003-05-10 23:46:17 +02:00
|
|
|
static int unpack_dct_coeffs(Vp3DecodeContext *s, GetBitContext *gb)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
int dc_y_table;
|
|
|
|
int dc_c_table;
|
|
|
|
int ac_y_table;
|
|
|
|
int ac_c_table;
|
|
|
|
int residual_eob_run = 0;
|
2009-12-02 05:06:27 +01:00
|
|
|
VLC *y_tables[64];
|
|
|
|
VLC *c_tables[64];
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
s->dct_tokens[0][0] = s->dct_tokens_base;
|
|
|
|
|
2008-05-27 01:14:25 +02:00
|
|
|
/* fetch the DC table indexes */
|
2003-05-05 04:54:15 +02:00
|
|
|
dc_y_table = get_bits(gb, 4);
|
|
|
|
dc_c_table = get_bits(gb, 4);
|
|
|
|
|
|
|
|
/* unpack the Y plane DC coefficients */
|
2005-12-17 19:14:38 +01:00
|
|
|
residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_y_table], 0,
|
2010-03-04 00:27:43 +01:00
|
|
|
0, residual_eob_run);
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2009-09-22 17:58:08 +02:00
|
|
|
/* reverse prediction of the Y-plane DC coefficients */
|
2010-03-13 06:56:15 +01:00
|
|
|
reverse_dc_prediction(s, 0, s->fragment_width[0], s->fragment_height[0]);
|
2009-09-22 17:58:08 +02:00
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
/* unpack the C plane DC coefficients */
|
|
|
|
residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_c_table], 0,
|
2010-03-04 00:27:43 +01:00
|
|
|
1, residual_eob_run);
|
|
|
|
residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_c_table], 0,
|
|
|
|
2, residual_eob_run);
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2009-09-22 17:58:08 +02:00
|
|
|
/* reverse prediction of the C-plane DC coefficients */
|
|
|
|
if (!(s->avctx->flags & CODEC_FLAG_GRAY))
|
|
|
|
{
|
|
|
|
reverse_dc_prediction(s, s->fragment_start[1],
|
2010-03-13 06:56:15 +01:00
|
|
|
s->fragment_width[1], s->fragment_height[1]);
|
2009-09-22 17:58:08 +02:00
|
|
|
reverse_dc_prediction(s, s->fragment_start[2],
|
2010-03-13 06:56:15 +01:00
|
|
|
s->fragment_width[1], s->fragment_height[1]);
|
2009-09-22 17:58:08 +02:00
|
|
|
}
|
|
|
|
|
2008-05-27 01:14:25 +02:00
|
|
|
/* fetch the AC table indexes */
|
2003-05-05 04:54:15 +02:00
|
|
|
ac_y_table = get_bits(gb, 4);
|
|
|
|
ac_c_table = get_bits(gb, 4);
|
|
|
|
|
2009-12-02 05:06:27 +01:00
|
|
|
/* build tables of AC VLC tables */
|
2003-05-05 04:54:15 +02:00
|
|
|
for (i = 1; i <= 5; i++) {
|
2009-12-02 05:06:27 +01:00
|
|
|
y_tables[i] = &s->ac_vlc_1[ac_y_table];
|
|
|
|
c_tables[i] = &s->ac_vlc_1[ac_c_table];
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
for (i = 6; i <= 14; i++) {
|
2009-12-02 05:06:27 +01:00
|
|
|
y_tables[i] = &s->ac_vlc_2[ac_y_table];
|
|
|
|
c_tables[i] = &s->ac_vlc_2[ac_c_table];
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
for (i = 15; i <= 27; i++) {
|
2009-12-02 05:06:27 +01:00
|
|
|
y_tables[i] = &s->ac_vlc_3[ac_y_table];
|
|
|
|
c_tables[i] = &s->ac_vlc_3[ac_c_table];
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
for (i = 28; i <= 63; i++) {
|
2009-12-02 05:06:27 +01:00
|
|
|
y_tables[i] = &s->ac_vlc_4[ac_y_table];
|
|
|
|
c_tables[i] = &s->ac_vlc_4[ac_c_table];
|
|
|
|
}
|
|
|
|
|
|
|
|
/* decode all AC coefficents */
|
|
|
|
for (i = 1; i <= 63; i++) {
|
|
|
|
residual_eob_run = unpack_vlcs(s, gb, y_tables[i], i,
|
2010-03-04 00:27:43 +01:00
|
|
|
0, residual_eob_run);
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2009-12-02 05:06:27 +01:00
|
|
|
residual_eob_run = unpack_vlcs(s, gb, c_tables[i], i,
|
2010-03-04 00:27:43 +01:00
|
|
|
1, residual_eob_run);
|
|
|
|
residual_eob_run = unpack_vlcs(s, gb, c_tables[i], i,
|
|
|
|
2, residual_eob_run);
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
2003-05-10 23:46:17 +02:00
|
|
|
|
|
|
|
return 0;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function reverses the DC prediction for each coded fragment in
|
2005-12-17 19:14:38 +01:00
|
|
|
* the frame. Much of this function is adapted directly from the original
|
2003-05-05 04:54:15 +02:00
|
|
|
* VP3 source code.
|
|
|
|
*/
|
|
|
|
#define COMPATIBLE_FRAME(x) \
|
|
|
|
(compatible_frame[s->all_fragments[x].coding_method] == current_frame_type)
|
2010-03-04 00:27:43 +01:00
|
|
|
#define DC_COEFF(u) s->all_fragments[u].dc
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
static void reverse_dc_prediction(Vp3DecodeContext *s,
|
|
|
|
int first_fragment,
|
|
|
|
int fragment_width,
|
2005-12-17 19:14:38 +01:00
|
|
|
int fragment_height)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
|
|
|
|
|
|
|
#define PUL 8
|
|
|
|
#define PU 4
|
|
|
|
#define PUR 2
|
|
|
|
#define PL 1
|
|
|
|
|
|
|
|
int x, y;
|
|
|
|
int i = first_fragment;
|
|
|
|
|
2006-10-06 13:33:57 +02:00
|
|
|
int predicted_dc;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
/* DC values for the left, up-left, up, and up-right fragments */
|
|
|
|
int vl, vul, vu, vur;
|
|
|
|
|
2008-05-27 01:14:25 +02:00
|
|
|
/* indexes for the left, up-left, up, and up-right fragments */
|
2003-05-05 04:54:15 +02:00
|
|
|
int l, ul, u, ur;
|
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
/*
|
2003-05-05 04:54:15 +02:00
|
|
|
* The 6 fields mean:
|
|
|
|
* 0: up-left multiplier
|
|
|
|
* 1: up multiplier
|
|
|
|
* 2: up-right multiplier
|
|
|
|
* 3: left multiplier
|
|
|
|
*/
|
2009-09-05 19:28:20 +02:00
|
|
|
static const int predictor_transform[16][4] = {
|
2006-07-20 00:21:45 +02:00
|
|
|
{ 0, 0, 0, 0},
|
|
|
|
{ 0, 0, 0,128}, // PL
|
|
|
|
{ 0, 0,128, 0}, // PUR
|
|
|
|
{ 0, 0, 53, 75}, // PUR|PL
|
|
|
|
{ 0,128, 0, 0}, // PU
|
|
|
|
{ 0, 64, 0, 64}, // PU|PL
|
|
|
|
{ 0,128, 0, 0}, // PU|PUR
|
|
|
|
{ 0, 0, 53, 75}, // PU|PUR|PL
|
|
|
|
{128, 0, 0, 0}, // PUL
|
|
|
|
{ 0, 0, 0,128}, // PUL|PL
|
|
|
|
{ 64, 0, 64, 0}, // PUL|PUR
|
|
|
|
{ 0, 0, 53, 75}, // PUL|PUR|PL
|
|
|
|
{ 0,128, 0, 0}, // PUL|PU
|
|
|
|
{-104,116, 0,116}, // PUL|PU|PL
|
|
|
|
{ 24, 80, 24, 0}, // PUL|PU|PUR
|
|
|
|
{-104,116, 0,116} // PUL|PU|PUR|PL
|
2003-05-05 04:54:15 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
/* This table shows which types of blocks can use other blocks for
|
|
|
|
* prediction. For example, INTRA is the only mode in this table to
|
|
|
|
* have a frame number of 0. That means INTRA blocks can only predict
|
2005-12-17 19:14:38 +01:00
|
|
|
* from other INTRA blocks. There are 2 golden frame coding types;
|
2003-05-05 04:54:15 +02:00
|
|
|
* blocks encoding in these modes can only predict from other blocks
|
|
|
|
* that were encoded with these 1 of these 2 modes. */
|
2009-12-06 16:33:48 +01:00
|
|
|
static const unsigned char compatible_frame[9] = {
|
2003-05-05 04:54:15 +02:00
|
|
|
1, /* MODE_INTER_NO_MV */
|
|
|
|
0, /* MODE_INTRA */
|
|
|
|
1, /* MODE_INTER_PLUS_MV */
|
|
|
|
1, /* MODE_INTER_LAST_MV */
|
|
|
|
1, /* MODE_INTER_PRIOR_MV */
|
|
|
|
2, /* MODE_USING_GOLDEN */
|
|
|
|
2, /* MODE_GOLDEN_MV */
|
2009-12-06 16:33:48 +01:00
|
|
|
1, /* MODE_INTER_FOUR_MV */
|
|
|
|
3 /* MODE_COPY */
|
2003-05-05 04:54:15 +02:00
|
|
|
};
|
|
|
|
int current_frame_type;
|
|
|
|
|
|
|
|
/* there is a last DC predictor for each of the 3 frame types */
|
|
|
|
short last_dc[3];
|
|
|
|
|
|
|
|
int transform = 0;
|
|
|
|
|
|
|
|
vul = vu = vur = vl = 0;
|
|
|
|
last_dc[0] = last_dc[1] = last_dc[2] = 0;
|
|
|
|
|
|
|
|
/* for each fragment row... */
|
|
|
|
for (y = 0; y < fragment_height; y++) {
|
|
|
|
|
|
|
|
/* for each fragment in a row... */
|
|
|
|
for (x = 0; x < fragment_width; x++, i++) {
|
|
|
|
|
|
|
|
/* reverse prediction if this block was coded */
|
|
|
|
if (s->all_fragments[i].coding_method != MODE_COPY) {
|
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
current_frame_type =
|
2003-05-05 04:54:15 +02:00
|
|
|
compatible_frame[s->all_fragments[i].coding_method];
|
|
|
|
|
2006-07-19 23:20:56 +02:00
|
|
|
transform= 0;
|
|
|
|
if(x){
|
|
|
|
l= i-1;
|
2005-05-19 12:48:36 +02:00
|
|
|
vl = DC_COEFF(l);
|
2009-12-06 16:33:48 +01:00
|
|
|
if(COMPATIBLE_FRAME(l))
|
2006-07-20 00:21:45 +02:00
|
|
|
transform |= PL;
|
2006-07-19 23:20:56 +02:00
|
|
|
}
|
|
|
|
if(y){
|
|
|
|
u= i-fragment_width;
|
2005-05-19 12:48:36 +02:00
|
|
|
vu = DC_COEFF(u);
|
2009-12-06 16:33:48 +01:00
|
|
|
if(COMPATIBLE_FRAME(u))
|
2006-07-20 00:21:45 +02:00
|
|
|
transform |= PU;
|
2006-07-19 23:20:56 +02:00
|
|
|
if(x){
|
|
|
|
ul= i-fragment_width-1;
|
|
|
|
vul = DC_COEFF(ul);
|
2009-12-06 16:33:48 +01:00
|
|
|
if(COMPATIBLE_FRAME(ul))
|
2006-07-20 00:21:45 +02:00
|
|
|
transform |= PUL;
|
2006-07-19 23:20:56 +02:00
|
|
|
}
|
|
|
|
if(x + 1 < fragment_width){
|
|
|
|
ur= i-fragment_width+1;
|
|
|
|
vur = DC_COEFF(ur);
|
2009-12-06 16:33:48 +01:00
|
|
|
if(COMPATIBLE_FRAME(ur))
|
2006-07-20 00:21:45 +02:00
|
|
|
transform |= PUR;
|
2006-07-19 23:20:56 +02:00
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
if (transform == 0) {
|
|
|
|
|
|
|
|
/* if there were no fragments to predict from, use last
|
|
|
|
* DC saved */
|
2005-05-19 12:48:36 +02:00
|
|
|
predicted_dc = last_dc[current_frame_type];
|
2003-05-05 04:54:15 +02:00
|
|
|
} else {
|
|
|
|
|
|
|
|
/* apply the appropriate predictor transform */
|
|
|
|
predicted_dc =
|
|
|
|
(predictor_transform[transform][0] * vul) +
|
|
|
|
(predictor_transform[transform][1] * vu) +
|
|
|
|
(predictor_transform[transform][2] * vur) +
|
|
|
|
(predictor_transform[transform][3] * vl);
|
|
|
|
|
2006-07-20 00:42:31 +02:00
|
|
|
predicted_dc /= 128;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
/* check for outranging on the [ul u l] and
|
|
|
|
* [ul u ur l] predictors */
|
2009-12-06 16:31:58 +01:00
|
|
|
if ((transform == 15) || (transform == 13)) {
|
2006-10-12 01:17:58 +02:00
|
|
|
if (FFABS(predicted_dc - vu) > 128)
|
2003-05-05 04:54:15 +02:00
|
|
|
predicted_dc = vu;
|
2006-10-12 01:17:58 +02:00
|
|
|
else if (FFABS(predicted_dc - vl) > 128)
|
2003-05-05 04:54:15 +02:00
|
|
|
predicted_dc = vl;
|
2006-10-12 01:17:58 +02:00
|
|
|
else if (FFABS(predicted_dc - vul) > 128)
|
2003-05-05 04:54:15 +02:00
|
|
|
predicted_dc = vul;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-05-19 12:48:36 +02:00
|
|
|
/* at long last, apply the predictor */
|
2010-03-04 00:27:43 +01:00
|
|
|
DC_COEFF(i) += predicted_dc;
|
2003-05-05 04:54:15 +02:00
|
|
|
/* save the DC */
|
2005-05-19 12:48:36 +02:00
|
|
|
last_dc[current_frame_type] = DC_COEFF(i);
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-02-12 23:01:29 +01:00
|
|
|
static void apply_loop_filter(Vp3DecodeContext *s, int plane, int ystart, int yend)
|
2010-02-12 23:01:25 +01:00
|
|
|
{
|
|
|
|
int x, y;
|
|
|
|
int *bounding_values= s->bounding_values_array+127;
|
|
|
|
|
2010-03-13 06:56:15 +01:00
|
|
|
int width = s->fragment_width[!!plane];
|
|
|
|
int height = s->fragment_height[!!plane];
|
2010-02-12 23:01:32 +01:00
|
|
|
int fragment = s->fragment_start [plane] + ystart * width;
|
|
|
|
int stride = s->current_frame.linesize[plane];
|
|
|
|
uint8_t *plane_data = s->current_frame.data [plane];
|
|
|
|
if (!s->flipped_image) stride = -stride;
|
2010-02-12 23:01:38 +01:00
|
|
|
plane_data += s->data_offset[plane] + 8*ystart*stride;
|
2010-02-12 23:01:32 +01:00
|
|
|
|
|
|
|
for (y = ystart; y < yend; y++) {
|
|
|
|
|
|
|
|
for (x = 0; x < width; x++) {
|
|
|
|
/* This code basically just deblocks on the edges of coded blocks.
|
|
|
|
* However, it has to be much more complicated because of the
|
|
|
|
* braindamaged deblock ordering used in VP3/Theora. Order matters
|
|
|
|
* because some pixels get filtered twice. */
|
|
|
|
if( s->all_fragments[fragment].coding_method != MODE_COPY )
|
|
|
|
{
|
|
|
|
/* do not perform left edge filter for left columns frags */
|
|
|
|
if (x > 0) {
|
|
|
|
s->dsp.vp3_h_loop_filter(
|
2010-02-12 23:01:38 +01:00
|
|
|
plane_data + 8*x,
|
2010-02-12 23:01:32 +01:00
|
|
|
stride, bounding_values);
|
|
|
|
}
|
2010-02-12 23:01:25 +01:00
|
|
|
|
2010-02-12 23:01:32 +01:00
|
|
|
/* do not perform top edge filter for top row fragments */
|
|
|
|
if (y > 0) {
|
|
|
|
s->dsp.vp3_v_loop_filter(
|
2010-02-12 23:01:38 +01:00
|
|
|
plane_data + 8*x,
|
2010-02-12 23:01:32 +01:00
|
|
|
stride, bounding_values);
|
|
|
|
}
|
2010-02-12 23:01:25 +01:00
|
|
|
|
2010-02-12 23:01:32 +01:00
|
|
|
/* do not perform right edge filter for right column
|
|
|
|
* fragments or if right fragment neighbor is also coded
|
|
|
|
* in this frame (it will be filtered in next iteration) */
|
|
|
|
if ((x < width - 1) &&
|
|
|
|
(s->all_fragments[fragment + 1].coding_method == MODE_COPY)) {
|
|
|
|
s->dsp.vp3_h_loop_filter(
|
2010-02-12 23:01:38 +01:00
|
|
|
plane_data + 8*x + 8,
|
2010-02-12 23:01:32 +01:00
|
|
|
stride, bounding_values);
|
2010-02-12 23:01:25 +01:00
|
|
|
}
|
|
|
|
|
2010-02-12 23:01:32 +01:00
|
|
|
/* do not perform bottom edge filter for bottom row
|
|
|
|
* fragments or if bottom fragment neighbor is also coded
|
|
|
|
* in this frame (it will be filtered in the next row) */
|
|
|
|
if ((y < height - 1) &&
|
|
|
|
(s->all_fragments[fragment + width].coding_method == MODE_COPY)) {
|
|
|
|
s->dsp.vp3_v_loop_filter(
|
2010-02-12 23:01:38 +01:00
|
|
|
plane_data + 8*x + 8*stride,
|
2010-02-12 23:01:32 +01:00
|
|
|
stride, bounding_values);
|
|
|
|
}
|
2010-02-12 23:01:25 +01:00
|
|
|
}
|
2010-02-12 23:01:32 +01:00
|
|
|
|
|
|
|
fragment++;
|
2010-02-12 23:01:25 +01:00
|
|
|
}
|
2010-02-12 23:01:38 +01:00
|
|
|
plane_data += 8*stride;
|
2010-02-12 23:01:32 +01:00
|
|
|
}
|
2010-02-12 23:01:25 +01:00
|
|
|
}
|
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
/**
|
2010-06-30 17:38:06 +02:00
|
|
|
* Pull DCT tokens from the 64 levels to decode and dequant the coefficients
|
2010-03-04 00:27:43 +01:00
|
|
|
* for the next block in coding order
|
|
|
|
*/
|
|
|
|
static inline int vp3_dequant(Vp3DecodeContext *s, Vp3Fragment *frag,
|
|
|
|
int plane, int inter, DCTELEM block[64])
|
|
|
|
{
|
|
|
|
int16_t *dequantizer = s->qmat[frag->qpi][inter][plane];
|
|
|
|
uint8_t *perm = s->scantable.permutated;
|
|
|
|
int i = 0;
|
|
|
|
|
|
|
|
do {
|
|
|
|
int token = *s->dct_tokens[plane][i];
|
|
|
|
switch (token & 3) {
|
|
|
|
case 0: // EOB
|
|
|
|
if (--token < 4) // 0-3 are token types, so the EOB run must now be 0
|
|
|
|
s->dct_tokens[plane][i]++;
|
|
|
|
else
|
|
|
|
*s->dct_tokens[plane][i] = token & ~3;
|
|
|
|
goto end;
|
|
|
|
case 1: // zero run
|
|
|
|
s->dct_tokens[plane][i]++;
|
|
|
|
i += (token >> 2) & 0x7f;
|
|
|
|
block[perm[i]] = (token >> 9) * dequantizer[perm[i]];
|
|
|
|
i++;
|
|
|
|
break;
|
|
|
|
case 2: // coeff
|
|
|
|
block[perm[i]] = (token >> 2) * dequantizer[perm[i]];
|
|
|
|
s->dct_tokens[plane][i++]++;
|
|
|
|
break;
|
2010-04-16 14:21:41 +02:00
|
|
|
default: // shouldn't happen
|
2010-03-04 00:27:43 +01:00
|
|
|
return i;
|
|
|
|
}
|
|
|
|
} while (i < 64);
|
|
|
|
end:
|
|
|
|
// the actual DC+prediction is in the fragment structure
|
|
|
|
block[0] = frag->dc * s->qmat[0][inter][plane][0];
|
|
|
|
return i;
|
|
|
|
}
|
|
|
|
|
2010-02-12 23:01:35 +01:00
|
|
|
/**
|
|
|
|
* called when all pixels up to row y are complete
|
|
|
|
*/
|
|
|
|
static void vp3_draw_horiz_band(Vp3DecodeContext *s, int y)
|
|
|
|
{
|
|
|
|
int h, cy;
|
|
|
|
int offset[4];
|
|
|
|
|
|
|
|
if(s->avctx->draw_horiz_band==NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
h= y - s->last_slice_end;
|
2010-09-06 21:21:13 +02:00
|
|
|
s->last_slice_end= y;
|
2010-02-12 23:01:35 +01:00
|
|
|
y -= h;
|
|
|
|
|
|
|
|
if (!s->flipped_image) {
|
|
|
|
if (y == 0)
|
|
|
|
h -= s->height - s->avctx->height; // account for non-mod16
|
|
|
|
y = s->height - y - h;
|
|
|
|
}
|
|
|
|
|
2010-06-08 21:25:28 +02:00
|
|
|
cy = y >> s->chroma_y_shift;
|
2010-02-12 23:01:35 +01:00
|
|
|
offset[0] = s->current_frame.linesize[0]*y;
|
|
|
|
offset[1] = s->current_frame.linesize[1]*cy;
|
|
|
|
offset[2] = s->current_frame.linesize[2]*cy;
|
|
|
|
offset[3] = 0;
|
|
|
|
|
|
|
|
emms_c();
|
|
|
|
s->avctx->draw_horiz_band(s->avctx, &s->current_frame, offset, y, 3, h);
|
|
|
|
}
|
|
|
|
|
2005-05-21 06:43:36 +02:00
|
|
|
/*
|
|
|
|
* Perform the final rendering for a particular slice of data.
|
2010-03-04 00:27:40 +01:00
|
|
|
* The slice number ranges from 0..(c_superblock_height - 1).
|
2005-05-21 06:43:36 +02:00
|
|
|
*/
|
|
|
|
static void render_slice(Vp3DecodeContext *s, int slice)
|
|
|
|
{
|
2010-03-04 00:27:40 +01:00
|
|
|
int x, y, i, j;
|
2010-02-17 21:36:20 +01:00
|
|
|
LOCAL_ALIGNED_16(DCTELEM, block, [64]);
|
2005-05-21 06:43:36 +02:00
|
|
|
int motion_x = 0xdeadbeef, motion_y = 0xdeadbeef;
|
|
|
|
int motion_halfpel_index;
|
|
|
|
uint8_t *motion_source;
|
2010-03-04 00:27:40 +01:00
|
|
|
int plane, first_pixel;
|
2005-05-21 06:43:36 +02:00
|
|
|
|
2010-03-04 00:27:40 +01:00
|
|
|
if (slice >= s->c_superblock_height)
|
2005-05-21 06:43:36 +02:00
|
|
|
return;
|
|
|
|
|
|
|
|
for (plane = 0; plane < 3; plane++) {
|
2010-02-12 23:01:38 +01:00
|
|
|
uint8_t *output_plane = s->current_frame.data [plane] + s->data_offset[plane];
|
|
|
|
uint8_t * last_plane = s-> last_frame.data [plane] + s->data_offset[plane];
|
|
|
|
uint8_t *golden_plane = s-> golden_frame.data [plane] + s->data_offset[plane];
|
2006-07-19 22:57:44 +02:00
|
|
|
int stride = s->current_frame.linesize[plane];
|
2010-03-13 06:59:22 +01:00
|
|
|
int plane_width = s->width >> (plane && s->chroma_x_shift);
|
|
|
|
int plane_height = s->height >> (plane && s->chroma_y_shift);
|
2010-03-13 11:25:41 +01:00
|
|
|
int8_t (*motion_val)[2] = s->motion_val[!!plane];
|
2010-03-04 00:27:40 +01:00
|
|
|
|
2010-03-13 06:59:22 +01:00
|
|
|
int sb_x, sb_y = slice << (!plane && s->chroma_y_shift);
|
|
|
|
int slice_height = sb_y + 1 + (!plane && s->chroma_y_shift);
|
2010-03-04 00:27:40 +01:00
|
|
|
int slice_width = plane ? s->c_superblock_width : s->y_superblock_width;
|
|
|
|
|
2010-03-13 06:56:15 +01:00
|
|
|
int fragment_width = s->fragment_width[!!plane];
|
|
|
|
int fragment_height = s->fragment_height[!!plane];
|
2010-03-04 00:27:40 +01:00
|
|
|
int fragment_start = s->fragment_start[plane];
|
2006-07-19 22:57:44 +02:00
|
|
|
|
|
|
|
if (!s->flipped_image) stride = -stride;
|
2010-02-13 19:59:25 +01:00
|
|
|
if (CONFIG_GRAY && plane && (s->avctx->flags & CODEC_FLAG_GRAY))
|
|
|
|
continue;
|
2005-05-21 06:43:36 +02:00
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2006-10-12 01:17:58 +02:00
|
|
|
if(FFABS(stride) > 2048)
|
2005-05-21 06:43:36 +02:00
|
|
|
return; //various tables are fixed size
|
|
|
|
|
2010-03-04 00:27:40 +01:00
|
|
|
/* for each superblock row in the slice (both of them)... */
|
|
|
|
for (; sb_y < slice_height; sb_y++) {
|
2005-05-21 06:43:36 +02:00
|
|
|
|
2010-03-04 00:27:40 +01:00
|
|
|
/* for each superblock in a row... */
|
|
|
|
for (sb_x = 0; sb_x < slice_width; sb_x++) {
|
2005-05-21 06:43:36 +02:00
|
|
|
|
2010-03-04 00:27:40 +01:00
|
|
|
/* for each block in a superblock... */
|
|
|
|
for (j = 0; j < 16; j++) {
|
|
|
|
x = 4*sb_x + hilbert_offset[j][0];
|
|
|
|
y = 4*sb_y + hilbert_offset[j][1];
|
|
|
|
|
|
|
|
i = fragment_start + y*fragment_width + x;
|
|
|
|
|
|
|
|
// bounds check
|
|
|
|
if (x >= fragment_width || y >= fragment_height)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
first_pixel = 8*y*stride + 8*x;
|
2005-05-21 06:43:36 +02:00
|
|
|
|
|
|
|
/* transform if this block was coded */
|
2010-02-13 19:59:25 +01:00
|
|
|
if (s->all_fragments[i].coding_method != MODE_COPY) {
|
2005-05-21 06:43:36 +02:00
|
|
|
if ((s->all_fragments[i].coding_method == MODE_USING_GOLDEN) ||
|
|
|
|
(s->all_fragments[i].coding_method == MODE_GOLDEN_MV))
|
|
|
|
motion_source= golden_plane;
|
2005-12-17 19:14:38 +01:00
|
|
|
else
|
2005-05-21 06:43:36 +02:00
|
|
|
motion_source= last_plane;
|
|
|
|
|
2010-02-12 23:01:38 +01:00
|
|
|
motion_source += first_pixel;
|
2005-05-21 06:43:36 +02:00
|
|
|
motion_halfpel_index = 0;
|
|
|
|
|
|
|
|
/* sort out the motion vector if this fragment is coded
|
|
|
|
* using a motion vector method */
|
|
|
|
if ((s->all_fragments[i].coding_method > MODE_INTRA) &&
|
|
|
|
(s->all_fragments[i].coding_method != MODE_USING_GOLDEN)) {
|
|
|
|
int src_x, src_y;
|
2010-03-13 11:25:41 +01:00
|
|
|
motion_x = motion_val[y*fragment_width + x][0];
|
|
|
|
motion_y = motion_val[y*fragment_width + x][1];
|
2005-05-21 06:43:36 +02:00
|
|
|
|
2010-03-04 00:27:40 +01:00
|
|
|
src_x= (motion_x>>1) + 8*x;
|
|
|
|
src_y= (motion_y>>1) + 8*y;
|
2005-05-21 06:43:36 +02:00
|
|
|
|
|
|
|
motion_halfpel_index = motion_x & 0x01;
|
|
|
|
motion_source += (motion_x >> 1);
|
|
|
|
|
|
|
|
motion_halfpel_index |= (motion_y & 0x01) << 1;
|
|
|
|
motion_source += ((motion_y >> 1) * stride);
|
|
|
|
|
|
|
|
if(src_x<0 || src_y<0 || src_x + 9 >= plane_width || src_y + 9 >= plane_height){
|
|
|
|
uint8_t *temp= s->edge_emu_buffer;
|
|
|
|
if(stride<0) temp -= 9*stride;
|
|
|
|
else temp += 9*stride;
|
|
|
|
|
|
|
|
ff_emulated_edge_mc(temp, motion_source, stride, 9, 9, src_x, src_y, plane_width, plane_height);
|
|
|
|
motion_source= temp;
|
|
|
|
}
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2005-05-21 06:43:36 +02:00
|
|
|
|
|
|
|
/* first, take care of copying a block from either the
|
|
|
|
* previous or the golden frame */
|
|
|
|
if (s->all_fragments[i].coding_method != MODE_INTRA) {
|
2005-12-17 19:14:38 +01:00
|
|
|
/* Note, it is possible to implement all MC cases with
|
|
|
|
put_no_rnd_pixels_l2 which would look more like the
|
|
|
|
VP3 source but this would be slower as
|
2005-05-21 06:43:36 +02:00
|
|
|
put_no_rnd_pixels_tab is better optimzed */
|
|
|
|
if(motion_halfpel_index != 3){
|
|
|
|
s->dsp.put_no_rnd_pixels_tab[1][motion_halfpel_index](
|
2010-02-12 23:01:38 +01:00
|
|
|
output_plane + first_pixel,
|
2005-05-21 06:43:36 +02:00
|
|
|
motion_source, stride, 8);
|
|
|
|
}else{
|
|
|
|
int d= (motion_x ^ motion_y)>>31; // d is 0 if motion_x and _y have the same sign, else -1
|
|
|
|
s->dsp.put_no_rnd_pixels_l2[1](
|
2010-02-12 23:01:38 +01:00
|
|
|
output_plane + first_pixel,
|
2005-12-17 19:14:38 +01:00
|
|
|
motion_source - d,
|
|
|
|
motion_source + stride + 1 + d,
|
2005-05-21 06:43:36 +02:00
|
|
|
stride, 8);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-12-10 22:35:17 +01:00
|
|
|
s->dsp.clear_block(block);
|
2005-05-21 06:43:36 +02:00
|
|
|
|
|
|
|
/* invert DCT and place (or add) in final output */
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2005-05-21 06:43:36 +02:00
|
|
|
if (s->all_fragments[i].coding_method == MODE_INTRA) {
|
2010-04-17 04:04:30 +02:00
|
|
|
vp3_dequant(s, s->all_fragments + i, plane, 0, block);
|
2005-05-21 06:43:36 +02:00
|
|
|
if(s->avctx->idct_algo!=FF_IDCT_VP3)
|
|
|
|
block[0] += 128<<3;
|
|
|
|
s->dsp.idct_put(
|
2010-02-12 23:01:38 +01:00
|
|
|
output_plane + first_pixel,
|
2005-05-21 06:43:36 +02:00
|
|
|
stride,
|
|
|
|
block);
|
|
|
|
} else {
|
2010-04-17 04:04:30 +02:00
|
|
|
if (vp3_dequant(s, s->all_fragments + i, plane, 1, block)) {
|
2005-05-21 06:43:36 +02:00
|
|
|
s->dsp.idct_add(
|
2010-02-12 23:01:38 +01:00
|
|
|
output_plane + first_pixel,
|
2005-05-21 06:43:36 +02:00
|
|
|
stride,
|
|
|
|
block);
|
2010-04-17 04:04:30 +02:00
|
|
|
} else {
|
|
|
|
s->dsp.vp3_idct_dc_add(output_plane + first_pixel, stride, block);
|
|
|
|
}
|
2005-05-21 06:43:36 +02:00
|
|
|
}
|
|
|
|
} else {
|
|
|
|
|
|
|
|
/* copy directly from the previous frame */
|
|
|
|
s->dsp.put_pixels_tab[1][0](
|
2010-02-12 23:01:38 +01:00
|
|
|
output_plane + first_pixel,
|
|
|
|
last_plane + first_pixel,
|
2005-05-21 06:43:36 +02:00
|
|
|
stride, 8);
|
|
|
|
|
|
|
|
}
|
2010-03-04 00:27:40 +01:00
|
|
|
}
|
2005-05-21 06:43:36 +02:00
|
|
|
}
|
2010-03-04 00:27:40 +01:00
|
|
|
|
|
|
|
// Filter up to the last row in the superblock row
|
2010-05-27 06:39:12 +02:00
|
|
|
if (!s->skip_loop_filter)
|
|
|
|
apply_loop_filter(s, plane, 4*sb_y - !!sb_y, FFMIN(4*sb_y+3, fragment_height-1));
|
2005-05-21 06:43:36 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* this looks like a good place for slice dispatch... */
|
|
|
|
/* algorithm:
|
|
|
|
* if (slice == s->macroblock_height - 1)
|
2005-05-21 07:20:52 +02:00
|
|
|
* dispatch (both last slice & 2nd-to-last slice);
|
|
|
|
* else if (slice > 0)
|
|
|
|
* dispatch (slice - 1);
|
2005-05-21 06:43:36 +02:00
|
|
|
*/
|
|
|
|
|
2010-09-06 21:26:18 +02:00
|
|
|
vp3_draw_horiz_band(s, FFMIN((32 << s->chroma_y_shift) * (slice + 1) -16, s->height-16));
|
2005-05-21 06:43:36 +02:00
|
|
|
}
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
/*
|
|
|
|
* This is the ffmpeg/libavcodec API init function.
|
|
|
|
*/
|
2008-03-21 04:11:20 +01:00
|
|
|
static av_cold int vp3_decode_init(AVCodecContext *avctx)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
|
|
|
Vp3DecodeContext *s = avctx->priv_data;
|
2006-07-17 11:51:59 +02:00
|
|
|
int i, inter, plane;
|
2003-05-10 23:46:17 +02:00
|
|
|
int c_width;
|
|
|
|
int c_height;
|
2010-03-13 06:59:22 +01:00
|
|
|
int y_fragment_count, c_fragment_count;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2003-12-08 12:32:06 +01:00
|
|
|
if (avctx->codec_tag == MKTAG('V','P','3','0'))
|
2005-12-22 02:10:11 +01:00
|
|
|
s->version = 0;
|
2003-12-08 12:32:06 +01:00
|
|
|
else
|
2005-12-22 02:10:11 +01:00
|
|
|
s->version = 1;
|
2003-12-08 12:32:06 +01:00
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
s->avctx = avctx;
|
2009-05-22 23:32:13 +02:00
|
|
|
s->width = FFALIGN(avctx->width, 16);
|
|
|
|
s->height = FFALIGN(avctx->height, 16);
|
2010-03-13 06:59:22 +01:00
|
|
|
if (avctx->pix_fmt == PIX_FMT_NONE)
|
|
|
|
avctx->pix_fmt = PIX_FMT_YUV420P;
|
2009-05-11 06:34:23 +02:00
|
|
|
avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
|
2005-05-17 13:12:04 +02:00
|
|
|
if(avctx->idct_algo==FF_IDCT_AUTO)
|
|
|
|
avctx->idct_algo=FF_IDCT_VP3;
|
2003-05-05 04:54:15 +02:00
|
|
|
dsputil_init(&s->dsp, avctx);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2005-05-17 13:31:57 +02:00
|
|
|
ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
/* initialize to an impossible value which will force a recalculation
|
|
|
|
* in the first frame decode */
|
2009-05-29 23:43:22 +02:00
|
|
|
for (i = 0; i < 3; i++)
|
|
|
|
s->qps[i] = -1;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-03-13 06:59:22 +01:00
|
|
|
avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_x_shift, &s->chroma_y_shift);
|
|
|
|
|
2003-05-10 23:46:17 +02:00
|
|
|
s->y_superblock_width = (s->width + 31) / 32;
|
|
|
|
s->y_superblock_height = (s->height + 31) / 32;
|
2010-03-04 00:27:37 +01:00
|
|
|
s->y_superblock_count = s->y_superblock_width * s->y_superblock_height;
|
2003-05-10 23:46:17 +02:00
|
|
|
|
|
|
|
/* work out the dimensions for the C planes */
|
2010-03-13 06:59:22 +01:00
|
|
|
c_width = s->width >> s->chroma_x_shift;
|
|
|
|
c_height = s->height >> s->chroma_y_shift;
|
2003-05-10 23:46:17 +02:00
|
|
|
s->c_superblock_width = (c_width + 31) / 32;
|
|
|
|
s->c_superblock_height = (c_height + 31) / 32;
|
2010-03-04 00:27:37 +01:00
|
|
|
s->c_superblock_count = s->c_superblock_width * s->c_superblock_height;
|
2003-05-10 23:46:17 +02:00
|
|
|
|
2010-03-04 00:27:37 +01:00
|
|
|
s->superblock_count = s->y_superblock_count + (s->c_superblock_count * 2);
|
|
|
|
s->u_superblock_start = s->y_superblock_count;
|
|
|
|
s->v_superblock_start = s->u_superblock_start + s->c_superblock_count;
|
2003-05-05 04:54:15 +02:00
|
|
|
s->superblock_coding = av_malloc(s->superblock_count);
|
|
|
|
|
|
|
|
s->macroblock_width = (s->width + 15) / 16;
|
|
|
|
s->macroblock_height = (s->height + 15) / 16;
|
|
|
|
s->macroblock_count = s->macroblock_width * s->macroblock_height;
|
|
|
|
|
2010-03-13 06:56:15 +01:00
|
|
|
s->fragment_width[0] = s->width / FRAGMENT_PIXELS;
|
|
|
|
s->fragment_height[0] = s->height / FRAGMENT_PIXELS;
|
2010-03-13 06:59:22 +01:00
|
|
|
s->fragment_width[1] = s->fragment_width[0] >> s->chroma_x_shift;
|
|
|
|
s->fragment_height[1] = s->fragment_height[0] >> s->chroma_y_shift;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
/* fragment count covers all 8x8 blocks for all 3 planes */
|
2010-03-13 06:59:22 +01:00
|
|
|
y_fragment_count = s->fragment_width[0] * s->fragment_height[0];
|
|
|
|
c_fragment_count = s->fragment_width[1] * s->fragment_height[1];
|
|
|
|
s->fragment_count = y_fragment_count + 2*c_fragment_count;
|
|
|
|
s->fragment_start[1] = y_fragment_count;
|
|
|
|
s->fragment_start[2] = y_fragment_count + c_fragment_count;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
s->all_fragments = av_malloc(s->fragment_count * sizeof(Vp3Fragment));
|
2010-03-04 00:27:43 +01:00
|
|
|
s->coded_fragment_list[0] = av_malloc(s->fragment_count * sizeof(int));
|
|
|
|
s->dct_tokens_base = av_malloc(64*s->fragment_count * sizeof(*s->dct_tokens_base));
|
2010-03-13 11:25:41 +01:00
|
|
|
s->motion_val[0] = av_malloc(y_fragment_count * sizeof(*s->motion_val[0]));
|
|
|
|
s->motion_val[1] = av_malloc(c_fragment_count * sizeof(*s->motion_val[1]));
|
|
|
|
|
2010-03-04 00:27:43 +01:00
|
|
|
if (!s->superblock_coding || !s->all_fragments || !s->dct_tokens_base ||
|
2010-03-13 11:25:41 +01:00
|
|
|
!s->coded_fragment_list[0] || !s->motion_val[0] || !s->motion_val[1]) {
|
2009-09-24 08:33:16 +02:00
|
|
|
vp3_decode_end(avctx);
|
|
|
|
return -1;
|
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2003-10-11 19:44:21 +02:00
|
|
|
if (!s->theora_tables)
|
|
|
|
{
|
2006-08-17 10:08:28 +02:00
|
|
|
for (i = 0; i < 64; i++) {
|
2005-12-22 02:10:11 +01:00
|
|
|
s->coded_dc_scale_factor[i] = vp31_dc_scale_factor[i];
|
|
|
|
s->coded_ac_scale_factor[i] = vp31_ac_scale_factor[i];
|
2006-07-17 11:51:59 +02:00
|
|
|
s->base_matrix[0][i] = vp31_intra_y_dequant[i];
|
|
|
|
s->base_matrix[1][i] = vp31_intra_c_dequant[i];
|
|
|
|
s->base_matrix[2][i] = vp31_inter_dequant[i];
|
2005-12-22 02:10:11 +01:00
|
|
|
s->filter_limit_values[i] = vp31_filter_limit_values[i];
|
2006-08-17 10:08:28 +02:00
|
|
|
}
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2006-07-17 11:51:59 +02:00
|
|
|
for(inter=0; inter<2; inter++){
|
|
|
|
for(plane=0; plane<3; plane++){
|
|
|
|
s->qr_count[inter][plane]= 1;
|
|
|
|
s->qr_size [inter][plane][0]= 63;
|
|
|
|
s->qr_base [inter][plane][0]=
|
|
|
|
s->qr_base [inter][plane][1]= 2*inter + (!!plane)*!inter;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-05-20 01:59:10 +02:00
|
|
|
/* init VLC tables */
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
|
|
|
|
|
|
/* DC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
init_vlc(&s->dc_vlc[i], 11, 32,
|
2005-05-20 01:59:10 +02:00
|
|
|
&dc_bias[i][0][1], 4, 2,
|
|
|
|
&dc_bias[i][0][0], 4, 2, 0);
|
|
|
|
|
|
|
|
/* group 1 AC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
init_vlc(&s->ac_vlc_1[i], 11, 32,
|
2005-05-20 01:59:10 +02:00
|
|
|
&ac_bias_0[i][0][1], 4, 2,
|
|
|
|
&ac_bias_0[i][0][0], 4, 2, 0);
|
|
|
|
|
|
|
|
/* group 2 AC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
init_vlc(&s->ac_vlc_2[i], 11, 32,
|
2005-05-20 01:59:10 +02:00
|
|
|
&ac_bias_1[i][0][1], 4, 2,
|
|
|
|
&ac_bias_1[i][0][0], 4, 2, 0);
|
|
|
|
|
|
|
|
/* group 3 AC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
init_vlc(&s->ac_vlc_3[i], 11, 32,
|
2005-05-20 01:59:10 +02:00
|
|
|
&ac_bias_2[i][0][1], 4, 2,
|
|
|
|
&ac_bias_2[i][0][0], 4, 2, 0);
|
|
|
|
|
|
|
|
/* group 4 AC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
init_vlc(&s->ac_vlc_4[i], 11, 32,
|
2005-05-20 01:59:10 +02:00
|
|
|
&ac_bias_3[i][0][1], 4, 2,
|
|
|
|
&ac_bias_3[i][0][0], 4, 2, 0);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
|
2010-04-21 15:19:00 +02:00
|
|
|
for (i = 0; i < 16; i++) {
|
2005-05-20 01:59:10 +02:00
|
|
|
/* DC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
if (init_vlc(&s->dc_vlc[i], 11, 32,
|
|
|
|
&s->huffman_table[i][0][1], 8, 4,
|
|
|
|
&s->huffman_table[i][0][0], 8, 4, 0) < 0)
|
2009-07-06 11:22:39 +02:00
|
|
|
goto vlc_fail;
|
2005-05-20 01:59:10 +02:00
|
|
|
|
|
|
|
/* group 1 AC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
if (init_vlc(&s->ac_vlc_1[i], 11, 32,
|
|
|
|
&s->huffman_table[i+16][0][1], 8, 4,
|
|
|
|
&s->huffman_table[i+16][0][0], 8, 4, 0) < 0)
|
2009-07-06 11:22:39 +02:00
|
|
|
goto vlc_fail;
|
2005-05-20 01:59:10 +02:00
|
|
|
|
|
|
|
/* group 2 AC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
if (init_vlc(&s->ac_vlc_2[i], 11, 32,
|
|
|
|
&s->huffman_table[i+16*2][0][1], 8, 4,
|
|
|
|
&s->huffman_table[i+16*2][0][0], 8, 4, 0) < 0)
|
2009-07-06 11:22:39 +02:00
|
|
|
goto vlc_fail;
|
2005-05-20 01:59:10 +02:00
|
|
|
|
|
|
|
/* group 3 AC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
if (init_vlc(&s->ac_vlc_3[i], 11, 32,
|
|
|
|
&s->huffman_table[i+16*3][0][1], 8, 4,
|
|
|
|
&s->huffman_table[i+16*3][0][0], 8, 4, 0) < 0)
|
2009-07-06 11:22:39 +02:00
|
|
|
goto vlc_fail;
|
2005-05-20 01:59:10 +02:00
|
|
|
|
|
|
|
/* group 4 AC histograms */
|
2010-04-21 15:19:00 +02:00
|
|
|
if (init_vlc(&s->ac_vlc_4[i], 11, 32,
|
|
|
|
&s->huffman_table[i+16*4][0][1], 8, 4,
|
|
|
|
&s->huffman_table[i+16*4][0][0], 8, 4, 0) < 0)
|
2009-07-06 11:22:39 +02:00
|
|
|
goto vlc_fail;
|
2005-05-20 01:59:10 +02:00
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
2005-05-18 02:11:49 +02:00
|
|
|
init_vlc(&s->superblock_run_length_vlc, 6, 34,
|
|
|
|
&superblock_run_length_vlc_table[0][1], 4, 2,
|
|
|
|
&superblock_run_length_vlc_table[0][0], 4, 2, 0);
|
|
|
|
|
2005-11-13 18:48:27 +01:00
|
|
|
init_vlc(&s->fragment_run_length_vlc, 5, 30,
|
2005-05-18 01:39:23 +02:00
|
|
|
&fragment_run_length_vlc_table[0][1], 4, 2,
|
|
|
|
&fragment_run_length_vlc_table[0][0], 4, 2, 0);
|
|
|
|
|
|
|
|
init_vlc(&s->mode_code_vlc, 3, 8,
|
|
|
|
&mode_code_vlc_table[0][1], 2, 1,
|
|
|
|
&mode_code_vlc_table[0][0], 2, 1, 0);
|
|
|
|
|
|
|
|
init_vlc(&s->motion_vector_vlc, 6, 63,
|
|
|
|
&motion_vector_vlc_table[0][1], 2, 1,
|
|
|
|
&motion_vector_vlc_table[0][0], 2, 1, 0);
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
/* work out the block mapping tables */
|
|
|
|
s->superblock_fragments = av_malloc(s->superblock_count * 16 * sizeof(int));
|
2003-05-11 06:47:45 +02:00
|
|
|
s->macroblock_coding = av_malloc(s->macroblock_count + 1);
|
2010-02-13 19:55:21 +01:00
|
|
|
if (!s->superblock_fragments || !s->macroblock_coding) {
|
2009-09-24 08:33:16 +02:00
|
|
|
vp3_decode_end(avctx);
|
|
|
|
return -1;
|
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
init_block_mapping(s);
|
|
|
|
|
2003-05-07 04:30:37 +02:00
|
|
|
for (i = 0; i < 3; i++) {
|
|
|
|
s->current_frame.data[i] = NULL;
|
|
|
|
s->last_frame.data[i] = NULL;
|
|
|
|
s->golden_frame.data[i] = NULL;
|
2003-05-06 05:11:20 +02:00
|
|
|
}
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
return 0;
|
2009-07-06 11:22:39 +02:00
|
|
|
|
|
|
|
vlc_fail:
|
|
|
|
av_log(avctx, AV_LOG_FATAL, "Invalid huffman table\n");
|
|
|
|
return -1;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This is the ffmpeg/libavcodec API frame decode function.
|
|
|
|
*/
|
2005-12-17 19:14:38 +01:00
|
|
|
static int vp3_decode_frame(AVCodecContext *avctx,
|
2003-05-05 04:54:15 +02:00
|
|
|
void *data, int *data_size,
|
2009-04-07 17:59:50 +02:00
|
|
|
AVPacket *avpkt)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
2009-04-07 17:59:50 +02:00
|
|
|
const uint8_t *buf = avpkt->data;
|
|
|
|
int buf_size = avpkt->size;
|
2003-05-05 04:54:15 +02:00
|
|
|
Vp3DecodeContext *s = avctx->priv_data;
|
|
|
|
GetBitContext gb;
|
|
|
|
static int counter = 0;
|
2005-05-21 06:43:36 +02:00
|
|
|
int i;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
init_get_bits(&gb, buf, buf_size * 8);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-10-11 19:44:21 +02:00
|
|
|
if (s->theora && get_bits1(&gb))
|
|
|
|
{
|
2005-12-22 02:10:11 +01:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "Header packet passed to frame decoder, skipping\n");
|
|
|
|
return -1;
|
2003-10-11 19:44:21 +02:00
|
|
|
}
|
2003-12-08 12:32:06 +01:00
|
|
|
|
|
|
|
s->keyframe = !get_bits1(&gb);
|
|
|
|
if (!s->theora)
|
2005-12-22 02:10:11 +01:00
|
|
|
skip_bits(&gb, 1);
|
2009-05-29 23:43:22 +02:00
|
|
|
for (i = 0; i < 3; i++)
|
|
|
|
s->last_qps[i] = s->qps[i];
|
2006-07-17 15:09:45 +02:00
|
|
|
|
2009-05-29 23:43:22 +02:00
|
|
|
s->nqps=0;
|
2006-07-17 15:09:45 +02:00
|
|
|
do{
|
2009-05-29 23:43:22 +02:00
|
|
|
s->qps[s->nqps++]= get_bits(&gb, 6);
|
|
|
|
} while(s->theora >= 0x030200 && s->nqps<3 && get_bits1(&gb));
|
|
|
|
for (i = s->nqps; i < 3; i++)
|
|
|
|
s->qps[i] = -1;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2003-12-08 19:26:22 +01:00
|
|
|
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
|
2005-12-22 02:10:11 +01:00
|
|
|
av_log(s->avctx, AV_LOG_INFO, " VP3 %sframe #%d: Q index = %d\n",
|
2009-05-29 23:43:22 +02:00
|
|
|
s->keyframe?"key":"", counter, s->qps[0]);
|
2003-05-05 04:54:15 +02:00
|
|
|
counter++;
|
|
|
|
|
2010-05-27 06:39:12 +02:00
|
|
|
s->skip_loop_filter = !s->filter_limit_values[s->qps[0]] ||
|
|
|
|
avctx->skip_loop_filter >= (s->keyframe ? AVDISCARD_ALL : AVDISCARD_NONKEY);
|
|
|
|
|
2009-05-29 23:43:22 +02:00
|
|
|
if (s->qps[0] != s->last_qps[0])
|
2005-05-21 07:20:52 +02:00
|
|
|
init_loop_filter(s);
|
2009-05-29 23:43:22 +02:00
|
|
|
|
|
|
|
for (i = 0; i < s->nqps; i++)
|
|
|
|
// reinit all dequantizers if the first one changed, because
|
|
|
|
// the DC of the first quantizer must be used for all matrices
|
|
|
|
if (s->qps[i] != s->last_qps[i] || s->qps[0] != s->last_qps[0])
|
|
|
|
init_dequantizer(s, i);
|
2003-05-31 09:56:58 +02:00
|
|
|
|
2008-09-30 00:04:35 +02:00
|
|
|
if (avctx->skip_frame >= AVDISCARD_NONKEY && !s->keyframe)
|
|
|
|
return buf_size;
|
|
|
|
|
2010-03-09 01:29:12 +01:00
|
|
|
s->current_frame.reference = 3;
|
2010-03-09 01:29:26 +01:00
|
|
|
s->current_frame.pict_type = s->keyframe ? FF_I_TYPE : FF_P_TYPE;
|
2010-03-09 01:29:12 +01:00
|
|
|
if (avctx->get_buffer(avctx, &s->current_frame) < 0) {
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
2010-03-09 01:29:16 +01:00
|
|
|
goto error;
|
2010-03-09 01:29:12 +01:00
|
|
|
}
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
if (s->keyframe) {
|
2005-12-22 02:10:11 +01:00
|
|
|
if (!s->theora)
|
|
|
|
{
|
|
|
|
skip_bits(&gb, 4); /* width code */
|
|
|
|
skip_bits(&gb, 4); /* height code */
|
|
|
|
if (s->version)
|
|
|
|
{
|
|
|
|
s->version = get_bits(&gb, 5);
|
|
|
|
if (counter == 1)
|
|
|
|
av_log(s->avctx, AV_LOG_DEBUG, "VP version: %d\n", s->version);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (s->version || s->theora)
|
|
|
|
{
|
|
|
|
if (get_bits1(&gb))
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "Warning, unsupported keyframe coding type?!\n");
|
|
|
|
skip_bits(&gb, 2); /* reserved? */
|
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
} else {
|
2010-02-12 23:01:38 +01:00
|
|
|
if (!s->golden_frame.data[0]) {
|
2010-03-09 01:29:22 +01:00
|
|
|
av_log(s->avctx, AV_LOG_WARNING, "vp3: first frame not a keyframe\n");
|
2010-03-09 01:29:26 +01:00
|
|
|
|
2010-03-09 01:29:22 +01:00
|
|
|
s->golden_frame.reference = 3;
|
2010-03-09 01:29:26 +01:00
|
|
|
s->golden_frame.pict_type = FF_I_TYPE;
|
2010-03-09 01:29:22 +01:00
|
|
|
if (avctx->get_buffer(avctx, &s->golden_frame) < 0) {
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
s->last_frame = s->golden_frame;
|
|
|
|
s->last_frame.type = FF_BUFFER_TYPE_COPY;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2003-08-20 09:35:23 +02:00
|
|
|
s->current_frame.qscale_table= s->qscale_table; //FIXME allocate individual tables per AVFrame
|
|
|
|
s->current_frame.qstride= 0;
|
|
|
|
|
2010-03-13 06:56:08 +01:00
|
|
|
memset(s->all_fragments, 0, s->fragment_count * sizeof(Vp3Fragment));
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2005-05-16 23:49:18 +02:00
|
|
|
if (unpack_superblocks(s, &gb)){
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_superblocks\n");
|
2010-03-09 01:29:16 +01:00
|
|
|
goto error;
|
2005-05-16 23:49:18 +02:00
|
|
|
}
|
|
|
|
if (unpack_modes(s, &gb)){
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_modes\n");
|
2010-03-09 01:29:16 +01:00
|
|
|
goto error;
|
2005-05-16 23:49:18 +02:00
|
|
|
}
|
|
|
|
if (unpack_vectors(s, &gb)){
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_vectors\n");
|
2010-03-09 01:29:16 +01:00
|
|
|
goto error;
|
2005-05-16 23:49:18 +02:00
|
|
|
}
|
2009-05-29 23:43:22 +02:00
|
|
|
if (unpack_block_qpis(s, &gb)){
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_block_qpis\n");
|
2010-03-09 01:29:16 +01:00
|
|
|
goto error;
|
2009-05-29 23:43:22 +02:00
|
|
|
}
|
2005-05-16 23:49:18 +02:00
|
|
|
if (unpack_dct_coeffs(s, &gb)){
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_dct_coeffs\n");
|
2010-03-09 01:29:16 +01:00
|
|
|
goto error;
|
2003-05-10 23:46:17 +02:00
|
|
|
}
|
2010-02-12 23:01:38 +01:00
|
|
|
|
|
|
|
for (i = 0; i < 3; i++) {
|
2010-03-13 06:59:22 +01:00
|
|
|
int height = s->height >> (i && s->chroma_y_shift);
|
2010-02-12 23:01:38 +01:00
|
|
|
if (s->flipped_image)
|
|
|
|
s->data_offset[i] = 0;
|
|
|
|
else
|
2010-03-13 06:59:22 +01:00
|
|
|
s->data_offset[i] = (height-1) * s->current_frame.linesize[i];
|
2010-02-12 23:01:38 +01:00
|
|
|
}
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-02-12 23:01:35 +01:00
|
|
|
s->last_slice_end = 0;
|
2010-03-04 00:27:40 +01:00
|
|
|
for (i = 0; i < s->c_superblock_height; i++)
|
2005-05-21 06:43:36 +02:00
|
|
|
render_slice(s, i);
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2010-02-12 23:01:29 +01:00
|
|
|
// filter the last row
|
|
|
|
for (i = 0; i < 3; i++) {
|
2010-03-13 06:59:22 +01:00
|
|
|
int row = (s->height >> (3+(i && s->chroma_y_shift))) - 1;
|
2010-02-12 23:01:29 +01:00
|
|
|
apply_loop_filter(s, i, row, row+1);
|
|
|
|
}
|
2010-02-12 23:01:35 +01:00
|
|
|
vp3_draw_horiz_band(s, s->height);
|
2003-05-10 23:46:17 +02:00
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
*data_size=sizeof(AVFrame);
|
|
|
|
*(AVFrame*)data= s->current_frame;
|
|
|
|
|
2003-05-07 04:30:37 +02:00
|
|
|
/* release the last frame, if it is allocated and if it is not the
|
|
|
|
* golden frame */
|
2010-03-09 01:29:19 +01:00
|
|
|
if (s->last_frame.data[0] && s->last_frame.type != FF_BUFFER_TYPE_COPY)
|
2003-05-07 04:30:37 +02:00
|
|
|
avctx->release_buffer(avctx, &s->last_frame);
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2003-05-06 05:11:20 +02:00
|
|
|
/* shuffle frames (last = current) */
|
2006-07-16 23:00:38 +02:00
|
|
|
s->last_frame= s->current_frame;
|
2010-03-09 01:29:12 +01:00
|
|
|
|
|
|
|
if (s->keyframe) {
|
|
|
|
if (s->golden_frame.data[0])
|
|
|
|
avctx->release_buffer(avctx, &s->golden_frame);
|
|
|
|
s->golden_frame = s->current_frame;
|
2010-03-09 01:29:19 +01:00
|
|
|
s->last_frame.type = FF_BUFFER_TYPE_COPY;
|
2010-03-09 01:29:12 +01:00
|
|
|
}
|
|
|
|
|
2003-08-19 18:18:48 +02:00
|
|
|
s->current_frame.data[0]= NULL; /* ensure that we catch any access to this released frame */
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
return buf_size;
|
2010-03-09 01:29:16 +01:00
|
|
|
|
|
|
|
error:
|
|
|
|
if (s->current_frame.data[0])
|
|
|
|
avctx->release_buffer(avctx, &s->current_frame);
|
|
|
|
return -1;
|
2003-05-05 04:54:15 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This is the ffmpeg/libavcodec API module cleanup function.
|
|
|
|
*/
|
2008-03-21 04:11:20 +01:00
|
|
|
static av_cold int vp3_decode_end(AVCodecContext *avctx)
|
2003-05-05 04:54:15 +02:00
|
|
|
{
|
|
|
|
Vp3DecodeContext *s = avctx->priv_data;
|
2008-02-24 19:56:52 +01:00
|
|
|
int i;
|
2003-05-05 04:54:15 +02:00
|
|
|
|
2008-02-24 19:56:52 +01:00
|
|
|
av_free(s->superblock_coding);
|
2003-05-05 04:54:15 +02:00
|
|
|
av_free(s->all_fragments);
|
2010-03-04 00:27:43 +01:00
|
|
|
av_free(s->coded_fragment_list[0]);
|
|
|
|
av_free(s->dct_tokens_base);
|
2003-05-05 04:54:15 +02:00
|
|
|
av_free(s->superblock_fragments);
|
2003-05-11 06:47:45 +02:00
|
|
|
av_free(s->macroblock_coding);
|
2010-03-13 11:25:41 +01:00
|
|
|
av_free(s->motion_val[0]);
|
|
|
|
av_free(s->motion_val[1]);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2008-02-24 19:56:52 +01:00
|
|
|
for (i = 0; i < 16; i++) {
|
|
|
|
free_vlc(&s->dc_vlc[i]);
|
|
|
|
free_vlc(&s->ac_vlc_1[i]);
|
|
|
|
free_vlc(&s->ac_vlc_2[i]);
|
|
|
|
free_vlc(&s->ac_vlc_3[i]);
|
|
|
|
free_vlc(&s->ac_vlc_4[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
free_vlc(&s->superblock_run_length_vlc);
|
|
|
|
free_vlc(&s->fragment_run_length_vlc);
|
|
|
|
free_vlc(&s->mode_code_vlc);
|
|
|
|
free_vlc(&s->motion_vector_vlc);
|
|
|
|
|
2003-05-05 04:54:15 +02:00
|
|
|
/* release all frames */
|
2010-03-09 01:29:19 +01:00
|
|
|
if (s->golden_frame.data[0])
|
2003-05-10 23:46:17 +02:00
|
|
|
avctx->release_buffer(avctx, &s->golden_frame);
|
2010-03-09 01:29:19 +01:00
|
|
|
if (s->last_frame.data[0] && s->last_frame.type != FF_BUFFER_TYPE_COPY)
|
2003-05-10 23:46:17 +02:00
|
|
|
avctx->release_buffer(avctx, &s->last_frame);
|
|
|
|
/* no need to release the current_frame since it will always be pointing
|
|
|
|
* to the same frame as either the golden or last frame */
|
2003-05-05 04:54:15 +02:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-05-20 01:59:10 +02:00
|
|
|
static int read_huffman_tree(AVCodecContext *avctx, GetBitContext *gb)
|
|
|
|
{
|
|
|
|
Vp3DecodeContext *s = avctx->priv_data;
|
|
|
|
|
2007-08-09 02:13:31 +02:00
|
|
|
if (get_bits1(gb)) {
|
2005-05-20 01:59:10 +02:00
|
|
|
int token;
|
|
|
|
if (s->entries >= 32) { /* overflow */
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "huffman tree overflow\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
token = get_bits(gb, 5);
|
|
|
|
//av_log(avctx, AV_LOG_DEBUG, "hti %d hbits %x token %d entry : %d size %d\n", s->hti, s->hbits, token, s->entries, s->huff_code_size);
|
|
|
|
s->huffman_table[s->hti][token][0] = s->hbits;
|
|
|
|
s->huffman_table[s->hti][token][1] = s->huff_code_size;
|
|
|
|
s->entries++;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
if (s->huff_code_size >= 32) {/* overflow */
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "huffman tree overflow\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
s->huff_code_size++;
|
|
|
|
s->hbits <<= 1;
|
2009-02-09 02:39:33 +01:00
|
|
|
if (read_huffman_tree(avctx, gb))
|
|
|
|
return -1;
|
2005-05-20 01:59:10 +02:00
|
|
|
s->hbits |= 1;
|
2009-02-09 02:39:33 +01:00
|
|
|
if (read_huffman_tree(avctx, gb))
|
|
|
|
return -1;
|
2005-05-20 01:59:10 +02:00
|
|
|
s->hbits >>= 1;
|
|
|
|
s->huff_code_size--;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-01-14 00:44:16 +01:00
|
|
|
#if CONFIG_THEORA_DECODER
|
2010-03-13 06:59:22 +01:00
|
|
|
static const enum PixelFormat theora_pix_fmts[4] = {
|
|
|
|
PIX_FMT_YUV420P, PIX_FMT_NONE, PIX_FMT_YUV422P, PIX_FMT_YUV444P
|
|
|
|
};
|
|
|
|
|
2006-07-16 22:30:39 +02:00
|
|
|
static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb)
|
2003-10-11 19:44:21 +02:00
|
|
|
{
|
|
|
|
Vp3DecodeContext *s = avctx->priv_data;
|
2010-02-12 23:01:22 +01:00
|
|
|
int visible_width, visible_height, colorspace;
|
2010-04-17 04:04:35 +02:00
|
|
|
int offset_x = 0, offset_y = 0;
|
2010-09-06 19:53:29 +02:00
|
|
|
AVRational fps, aspect;
|
2003-11-23 19:43:09 +01:00
|
|
|
|
2006-07-16 22:30:39 +02:00
|
|
|
s->theora = get_bits_long(gb, 24);
|
2008-02-13 09:05:51 +01:00
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Theora bitstream version %X\n", s->theora);
|
2003-11-23 19:49:53 +01:00
|
|
|
|
2005-05-13 23:06:44 +02:00
|
|
|
/* 3.2.0 aka alpha3 has the same frame orientation as original vp3 */
|
2003-11-23 19:43:09 +01:00
|
|
|
/* but previous versions have the image flipped relative to vp3 */
|
2005-05-13 23:06:44 +02:00
|
|
|
if (s->theora < 0x030200)
|
2003-11-23 19:43:09 +01:00
|
|
|
{
|
2005-12-22 02:10:11 +01:00
|
|
|
s->flipped_image = 1;
|
2003-11-23 19:43:09 +01:00
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Old (<alpha3) Theora bitstream, flipped image\n");
|
|
|
|
}
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2008-10-01 16:43:08 +02:00
|
|
|
visible_width = s->width = get_bits(gb, 16) << 4;
|
|
|
|
visible_height = s->height = get_bits(gb, 16) << 4;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2010-08-06 11:37:04 +02:00
|
|
|
if(av_check_image_size(s->width, s->height, 0, avctx)){
|
2005-11-13 18:59:21 +01:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid dimensions (%dx%d)\n", s->width, s->height);
|
2005-01-12 01:16:25 +01:00
|
|
|
s->width= s->height= 0;
|
|
|
|
return -1;
|
|
|
|
}
|
2005-11-13 18:59:21 +01:00
|
|
|
|
2008-10-01 16:43:08 +02:00
|
|
|
if (s->theora >= 0x030200) {
|
2008-10-01 16:44:30 +02:00
|
|
|
visible_width = get_bits_long(gb, 24);
|
|
|
|
visible_height = get_bits_long(gb, 24);
|
2007-05-07 17:43:01 +02:00
|
|
|
|
2010-04-17 04:04:35 +02:00
|
|
|
offset_x = get_bits(gb, 8); /* offset x */
|
|
|
|
offset_y = get_bits(gb, 8); /* offset y, from bottom */
|
2007-05-07 17:44:42 +02:00
|
|
|
}
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2010-04-17 04:04:39 +02:00
|
|
|
fps.num = get_bits_long(gb, 32);
|
|
|
|
fps.den = get_bits_long(gb, 32);
|
|
|
|
if (fps.num && fps.den) {
|
2010-04-17 12:37:42 +02:00
|
|
|
av_reduce(&avctx->time_base.num, &avctx->time_base.den,
|
|
|
|
fps.den, fps.num, 1<<30);
|
2010-04-17 04:04:39 +02:00
|
|
|
}
|
|
|
|
|
2010-09-06 19:53:29 +02:00
|
|
|
aspect.num = get_bits_long(gb, 24);
|
|
|
|
aspect.den = get_bits_long(gb, 24);
|
|
|
|
if (aspect.num && aspect.den) {
|
|
|
|
av_reduce(&avctx->sample_aspect_ratio.num,
|
|
|
|
&avctx->sample_aspect_ratio.den,
|
|
|
|
aspect.num, aspect.den, 1<<30);
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2005-05-13 23:06:44 +02:00
|
|
|
if (s->theora < 0x030200)
|
2006-07-16 22:30:39 +02:00
|
|
|
skip_bits(gb, 5); /* keyframe frequency force */
|
2010-02-12 23:01:22 +01:00
|
|
|
colorspace = get_bits(gb, 8);
|
2006-07-16 22:30:39 +02:00
|
|
|
skip_bits(gb, 24); /* bitrate */
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2006-07-16 22:30:39 +02:00
|
|
|
skip_bits(gb, 6); /* quality hint */
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2005-05-13 23:06:44 +02:00
|
|
|
if (s->theora >= 0x030200)
|
2003-11-23 19:49:53 +01:00
|
|
|
{
|
2006-07-16 22:30:39 +02:00
|
|
|
skip_bits(gb, 5); /* keyframe frequency force */
|
2010-03-13 06:59:22 +01:00
|
|
|
avctx->pix_fmt = theora_pix_fmts[get_bits(gb, 2)];
|
2010-02-12 23:01:18 +01:00
|
|
|
skip_bits(gb, 3); /* reserved */
|
2003-11-23 19:49:53 +01:00
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2006-07-16 22:30:39 +02:00
|
|
|
// align_get_bits(gb);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2007-05-07 17:43:01 +02:00
|
|
|
if ( visible_width <= s->width && visible_width > s->width-16
|
2010-04-17 04:04:35 +02:00
|
|
|
&& visible_height <= s->height && visible_height > s->height-16
|
|
|
|
&& !offset_x && (offset_y == s->height - visible_height))
|
2007-05-07 17:43:01 +02:00
|
|
|
avcodec_set_dimensions(avctx, visible_width, visible_height);
|
|
|
|
else
|
|
|
|
avcodec_set_dimensions(avctx, s->width, s->height);
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2010-02-12 23:01:22 +01:00
|
|
|
if (colorspace == 1) {
|
|
|
|
avctx->color_primaries = AVCOL_PRI_BT470M;
|
|
|
|
} else if (colorspace == 2) {
|
|
|
|
avctx->color_primaries = AVCOL_PRI_BT470BG;
|
|
|
|
}
|
|
|
|
if (colorspace == 1 || colorspace == 2) {
|
|
|
|
avctx->colorspace = AVCOL_SPC_BT470BG;
|
|
|
|
avctx->color_trc = AVCOL_TRC_BT709;
|
|
|
|
}
|
|
|
|
|
2003-10-11 19:44:21 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-07-16 22:30:39 +02:00
|
|
|
static int theora_decode_tables(AVCodecContext *avctx, GetBitContext *gb)
|
2003-10-11 19:44:21 +02:00
|
|
|
{
|
|
|
|
Vp3DecodeContext *s = avctx->priv_data;
|
2006-07-17 11:51:59 +02:00
|
|
|
int i, n, matrices, inter, plane;
|
2005-05-13 23:06:44 +02:00
|
|
|
|
|
|
|
if (s->theora >= 0x030200) {
|
2006-07-16 22:30:39 +02:00
|
|
|
n = get_bits(gb, 3);
|
2005-05-24 16:21:42 +02:00
|
|
|
/* loop filter limit values table */
|
2009-07-05 20:27:39 +02:00
|
|
|
for (i = 0; i < 64; i++) {
|
2006-07-16 22:30:39 +02:00
|
|
|
s->filter_limit_values[i] = get_bits(gb, n);
|
2009-07-05 20:27:39 +02:00
|
|
|
if (s->filter_limit_values[i] > 127) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "filter limit value too large (%i > 127), clamping\n", s->filter_limit_values[i]);
|
|
|
|
s->filter_limit_values[i] = 127;
|
|
|
|
}
|
|
|
|
}
|
2005-05-13 23:06:44 +02:00
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2005-05-13 23:06:44 +02:00
|
|
|
if (s->theora >= 0x030200)
|
2006-07-16 22:30:39 +02:00
|
|
|
n = get_bits(gb, 4) + 1;
|
2005-05-13 23:06:44 +02:00
|
|
|
else
|
|
|
|
n = 16;
|
2003-10-11 19:44:21 +02:00
|
|
|
/* quality threshold table */
|
|
|
|
for (i = 0; i < 64; i++)
|
2006-07-16 22:30:39 +02:00
|
|
|
s->coded_ac_scale_factor[i] = get_bits(gb, n);
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2005-05-13 23:06:44 +02:00
|
|
|
if (s->theora >= 0x030200)
|
2006-07-16 22:30:39 +02:00
|
|
|
n = get_bits(gb, 4) + 1;
|
2005-05-13 23:06:44 +02:00
|
|
|
else
|
|
|
|
n = 16;
|
2003-10-11 19:44:21 +02:00
|
|
|
/* dc scale factor table */
|
|
|
|
for (i = 0; i < 64; i++)
|
2006-07-16 22:30:39 +02:00
|
|
|
s->coded_dc_scale_factor[i] = get_bits(gb, n);
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2005-05-13 23:06:44 +02:00
|
|
|
if (s->theora >= 0x030200)
|
2006-07-16 22:30:39 +02:00
|
|
|
matrices = get_bits(gb, 9) + 1;
|
2005-05-13 23:06:44 +02:00
|
|
|
else
|
2005-11-13 21:06:31 +01:00
|
|
|
matrices = 3;
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2006-07-17 11:51:59 +02:00
|
|
|
if(matrices > 384){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "invalid number of base matrixes\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2003-12-08 12:32:06 +01:00
|
|
|
|
2006-07-17 11:51:59 +02:00
|
|
|
for(n=0; n<matrices; n++){
|
2005-12-22 02:10:11 +01:00
|
|
|
for (i = 0; i < 64; i++)
|
2006-07-17 11:51:59 +02:00
|
|
|
s->base_matrix[n][i]= get_bits(gb, 8);
|
|
|
|
}
|
2005-11-13 21:06:31 +01:00
|
|
|
|
2006-07-17 11:51:59 +02:00
|
|
|
for (inter = 0; inter <= 1; inter++) {
|
|
|
|
for (plane = 0; plane <= 2; plane++) {
|
|
|
|
int newqr= 1;
|
|
|
|
if (inter || plane > 0)
|
2007-08-09 02:13:31 +02:00
|
|
|
newqr = get_bits1(gb);
|
2005-05-20 01:59:10 +02:00
|
|
|
if (!newqr) {
|
2006-07-17 11:51:59 +02:00
|
|
|
int qtj, plj;
|
2007-08-09 02:13:31 +02:00
|
|
|
if(inter && get_bits1(gb)){
|
2006-07-17 11:51:59 +02:00
|
|
|
qtj = 0;
|
|
|
|
plj = plane;
|
|
|
|
}else{
|
|
|
|
qtj= (3*inter + plane - 1) / 3;
|
|
|
|
plj= (plane + 2) % 3;
|
|
|
|
}
|
|
|
|
s->qr_count[inter][plane]= s->qr_count[qtj][plj];
|
|
|
|
memcpy(s->qr_size[inter][plane], s->qr_size[qtj][plj], sizeof(s->qr_size[0][0]));
|
|
|
|
memcpy(s->qr_base[inter][plane], s->qr_base[qtj][plj], sizeof(s->qr_base[0][0]));
|
|
|
|
} else {
|
|
|
|
int qri= 0;
|
2005-05-20 01:59:10 +02:00
|
|
|
int qi = 0;
|
2006-07-17 11:51:59 +02:00
|
|
|
|
|
|
|
for(;;){
|
|
|
|
i= get_bits(gb, av_log2(matrices-1)+1);
|
|
|
|
if(i>= matrices){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "invalid base matrix index\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
s->qr_base[inter][plane][qri]= i;
|
|
|
|
if(qi >= 63)
|
|
|
|
break;
|
|
|
|
i = get_bits(gb, av_log2(63-qi)+1) + 1;
|
|
|
|
s->qr_size[inter][plane][qri++]= i;
|
|
|
|
qi += i;
|
2005-05-20 01:59:10 +02:00
|
|
|
}
|
2006-07-17 11:51:59 +02:00
|
|
|
|
2005-11-13 21:06:31 +01:00
|
|
|
if (qi > 63) {
|
2005-11-13 18:59:21 +01:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "invalid qi %d > 63\n", qi);
|
2005-12-22 02:10:11 +01:00
|
|
|
return -1;
|
|
|
|
}
|
2006-07-17 11:51:59 +02:00
|
|
|
s->qr_count[inter][plane]= qri;
|
2005-05-20 01:59:10 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-11-13 21:06:31 +01:00
|
|
|
/* Huffman tables */
|
2005-05-20 01:59:10 +02:00
|
|
|
for (s->hti = 0; s->hti < 80; s->hti++) {
|
|
|
|
s->entries = 0;
|
|
|
|
s->huff_code_size = 1;
|
2007-08-09 02:13:31 +02:00
|
|
|
if (!get_bits1(gb)) {
|
2005-05-20 01:59:10 +02:00
|
|
|
s->hbits = 0;
|
2009-02-09 02:39:33 +01:00
|
|
|
if(read_huffman_tree(avctx, gb))
|
|
|
|
return -1;
|
2005-05-20 01:59:10 +02:00
|
|
|
s->hbits = 1;
|
2009-02-09 02:39:33 +01:00
|
|
|
if(read_huffman_tree(avctx, gb))
|
|
|
|
return -1;
|
2005-05-20 01:59:10 +02:00
|
|
|
}
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-10-11 19:44:21 +02:00
|
|
|
s->theora_tables = 1;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-10-11 19:44:21 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-02-22 14:48:55 +01:00
|
|
|
static av_cold int theora_decode_init(AVCodecContext *avctx)
|
2003-10-11 19:44:21 +02:00
|
|
|
{
|
|
|
|
Vp3DecodeContext *s = avctx->priv_data;
|
|
|
|
GetBitContext gb;
|
|
|
|
int ptype;
|
2007-03-25 03:09:26 +02:00
|
|
|
uint8_t *header_start[3];
|
|
|
|
int header_len[3];
|
|
|
|
int i;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-10-11 19:44:21 +02:00
|
|
|
s->theora = 1;
|
|
|
|
|
|
|
|
if (!avctx->extradata_size)
|
2005-11-13 18:59:21 +01:00
|
|
|
{
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Missing extradata!\n");
|
2005-12-22 02:10:11 +01:00
|
|
|
return -1;
|
2005-11-13 18:59:21 +01:00
|
|
|
}
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2007-03-25 03:09:26 +02:00
|
|
|
if (ff_split_xiph_headers(avctx->extradata, avctx->extradata_size,
|
|
|
|
42, header_start, header_len) < 0) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Corrupt extradata\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-03-03 03:24:20 +01:00
|
|
|
|
2007-03-25 03:09:26 +02:00
|
|
|
for(i=0;i<3;i++) {
|
2009-09-23 14:27:10 +02:00
|
|
|
init_get_bits(&gb, header_start[i], header_len[i] * 8);
|
2003-10-11 19:44:21 +02:00
|
|
|
|
|
|
|
ptype = get_bits(&gb, 8);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2005-11-13 18:59:21 +01:00
|
|
|
if (!(ptype & 0x80))
|
|
|
|
{
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid extradata!\n");
|
2006-07-16 22:30:39 +02:00
|
|
|
// return -1;
|
2005-12-17 19:14:38 +01:00
|
|
|
}
|
2005-11-13 18:59:21 +01:00
|
|
|
|
2007-02-22 01:14:54 +01:00
|
|
|
// FIXME: Check for this as well.
|
2009-05-14 02:02:07 +02:00
|
|
|
skip_bits_long(&gb, 6*8); /* "theora" */
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-10-11 19:44:21 +02:00
|
|
|
switch(ptype)
|
|
|
|
{
|
|
|
|
case 0x80:
|
2006-07-16 22:30:39 +02:00
|
|
|
theora_decode_header(avctx, &gb);
|
2005-12-22 02:10:11 +01:00
|
|
|
break;
|
|
|
|
case 0x81:
|
2005-11-13 21:06:31 +01:00
|
|
|
// FIXME: is this needed? it breaks sometimes
|
2005-12-22 02:10:11 +01:00
|
|
|
// theora_decode_comments(avctx, gb);
|
|
|
|
break;
|
|
|
|
case 0x82:
|
2009-02-09 02:39:33 +01:00
|
|
|
if (theora_decode_tables(avctx, &gb))
|
|
|
|
return -1;
|
2005-12-22 02:10:11 +01:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Unknown Theora config packet: %d\n", ptype&~0x80);
|
|
|
|
break;
|
2003-10-11 19:44:21 +02:00
|
|
|
}
|
2008-09-30 06:18:22 +02:00
|
|
|
if(ptype != 0x81 && 8*header_len[i] != get_bits_count(&gb))
|
|
|
|
av_log(avctx, AV_LOG_WARNING, "%d bits left in packet %X\n", 8*header_len[i] - get_bits_count(&gb), ptype);
|
2006-07-17 12:44:53 +02:00
|
|
|
if (s->theora < 0x030200)
|
|
|
|
break;
|
2005-03-03 03:24:20 +01:00
|
|
|
}
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2009-07-06 12:28:58 +02:00
|
|
|
return vp3_decode_init(avctx);
|
2003-10-11 19:44:21 +02:00
|
|
|
}
|
|
|
|
|
2007-04-08 20:52:03 +02:00
|
|
|
AVCodec theora_decoder = {
|
|
|
|
"theora",
|
2010-03-31 01:30:55 +02:00
|
|
|
AVMEDIA_TYPE_VIDEO,
|
2007-04-08 20:52:03 +02:00
|
|
|
CODEC_ID_THEORA,
|
2003-05-05 04:54:15 +02:00
|
|
|
sizeof(Vp3DecodeContext),
|
2007-04-08 20:52:03 +02:00
|
|
|
theora_decode_init,
|
2003-05-05 04:54:15 +02:00
|
|
|
NULL,
|
|
|
|
vp3_decode_end,
|
|
|
|
vp3_decode_frame,
|
2010-02-12 23:01:35 +01:00
|
|
|
CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND,
|
2008-04-27 12:52:44 +02:00
|
|
|
NULL,
|
2008-06-12 23:50:13 +02:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Theora"),
|
2003-05-05 04:54:15 +02:00
|
|
|
};
|
2007-04-08 20:52:03 +02:00
|
|
|
#endif
|
2003-10-11 19:44:21 +02:00
|
|
|
|
2007-04-08 20:52:03 +02:00
|
|
|
AVCodec vp3_decoder = {
|
|
|
|
"vp3",
|
2010-03-31 01:30:55 +02:00
|
|
|
AVMEDIA_TYPE_VIDEO,
|
2007-04-08 20:52:03 +02:00
|
|
|
CODEC_ID_VP3,
|
2003-10-11 19:44:21 +02:00
|
|
|
sizeof(Vp3DecodeContext),
|
2007-04-08 20:52:03 +02:00
|
|
|
vp3_decode_init,
|
2003-10-11 19:44:21 +02:00
|
|
|
NULL,
|
|
|
|
vp3_decode_end,
|
|
|
|
vp3_decode_frame,
|
2010-02-12 23:01:35 +01:00
|
|
|
CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND,
|
2008-04-27 12:52:44 +02:00
|
|
|
NULL,
|
2008-06-12 23:50:13 +02:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("On2 VP3"),
|
2003-10-11 19:44:21 +02:00
|
|
|
};
|