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72153419b5
ffmpeg/libavcodec/ffv1.c
Michael Niedermayer 72153419b5 Merge remote branch 'qatar/master' 
* qatar/master: (33 commits)
  rtpdec_qdm2: Don't try to parse data packet if no configuration is received
  ac3enc: put the counting of stereo rematrixing bits in the same place to make the code easier to understand.
  ac3enc: clean up count_frame_bits() and count_frame_bits_fixed()
  mpegvideo: make FF_DEBUG_DCT_COEFF output coeffs via av_log() instead of just via AVFrame.
  srtdec: make sure we don't write past the end of buffer
  wmaenc: improve channel count and bitrate error handling in encode_init()
  matroskaenc: make sure we don't produce invalid file with no codec ID
  matroskadec: check that pointers were initialized before accessing them
  lavf: fix function name in compute_pkt_fields2 av_dlog message
  lavf: fix av_find_best_stream when providing a wanted stream.
  lavf: fix av_find_best_stream when decoder_ret is given and using a related stream.
  ffmpeg: factorize quality calculation
  tiff: add support for SamplesPerPixel tag in tiff_decode_tag()
  tiff: Prefer enum TiffCompr over int for TiffContext.compr.
  mov: Support edit list atom version 1.
  configure: Enable libpostproc automatically if GPL code is enabled.
  Cosmetics: fix prototypes in oggdec
  oggdec: fix memleak with continuous streams.
  matroskaenc: add missing new line in av_log() call
  dnxhdenc: add AVClass in private context.
  ...

swscale changes largely rewritten by me or replaced by baptsites due to lots of bugs in ronalds code.
Above code is also just in case its not obvios to a large extended duplicates that where cherry picked
from ffmpeg.

Conflicts:
	configure
	ffmpeg.c
	libavformat/matroskaenc.c
	libavutil/pixfmt.h
	libswscale/ppc/swscale_template.c
	libswscale/swscale.c
	libswscale/swscale_template.c
	libswscale/utils.c
	libswscale/x86/swscale_template.c
	tests/fate/h264.mak
	tests/ref/lavfi/pixdesc_le
	tests/ref/lavfi/pixfmts_copy_le
	tests/ref/lavfi/pixfmts_null_le
	tests/ref/lavfi/pixfmts_scale_le
	tests/ref/lavfi/pixfmts_vflip_le

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-05-13 04:40:40 +02:00

1864 lines
60 KiB
C
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/*
* FFV1 codec for libavcodec
*
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* FF Video Codec 1 (a lossless codec)
*/
#include "avcodec.h"
#include "get_bits.h"
#include "put_bits.h"
#include "dsputil.h"
#include "rangecoder.h"
#include "golomb.h"
#include "mathops.h"
#include "libavutil/avassert.h"
#define MAX_PLANES 4
#define CONTEXT_SIZE 32
#define MAX_QUANT_TABLES 8
#define MAX_CONTEXT_INPUTS 5
extern const uint8_t ff_log2_run[41];
static const int8_t quant3[256]={
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 0,
};
static const int8_t quant5_10bit[256]={
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,
};
static const int8_t quant5[256]={
0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,-1,
};
static const int8_t quant7[256]={
0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,
};
static const int8_t quant9[256]={
0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-1,-1,
};
static const int8_t quant9_10bit[256]={
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-1,-1,-1,-1,-1,-1,-1,-1,-0,-0,-0,-0,
};
static const int8_t quant11[256]={
0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-1,
};
static const int8_t quant13[256]={
0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1,
};
static const uint8_t ver2_state[256]= {
0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49,
59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39,
40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52,
53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69,
87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97,
85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98,
105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
};
typedef struct VlcState{
int16_t drift;
uint16_t error_sum;
int8_t bias;
uint8_t count;
} VlcState;
typedef struct PlaneContext{
int16_t quant_table[MAX_CONTEXT_INPUTS][256];
int quant_table_index;
int context_count;
uint8_t (*state)[CONTEXT_SIZE];
VlcState *vlc_state;
uint8_t interlace_bit_state[2];
} PlaneContext;
#define MAX_SLICES 256
typedef struct FFV1Context{
AVCodecContext *avctx;
RangeCoder c;
GetBitContext gb;
PutBitContext pb;
uint64_t rc_stat[256][2];
uint64_t (*rc_stat2[MAX_QUANT_TABLES])[32][2];
int version;
int width, height;
int chroma_h_shift, chroma_v_shift;
int flags;
int picture_number;
AVFrame picture;
int plane_count;
int ac; ///< 1=range coder <-> 0=golomb rice
PlaneContext plane[MAX_PLANES];
int16_t quant_table[MAX_CONTEXT_INPUTS][256];
int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256];
int context_count[MAX_QUANT_TABLES];
uint8_t state_transition[256];
uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
int run_index;
int colorspace;
int16_t *sample_buffer;
int gob_count;
int packed_at_lsb;
int quant_table_count;
DSPContext dsp;
struct FFV1Context *slice_context[MAX_SLICES];
int slice_count;
int num_v_slices;
int num_h_slices;
int slice_width;
int slice_height;
int slice_x;
int slice_y;
}FFV1Context;
static av_always_inline int fold(int diff, int bits){
if(bits==8)
diff= (int8_t)diff;
else{
diff+= 1<<(bits-1);
diff&=(1<<bits)-1;
diff-= 1<<(bits-1);
}
return diff;
}
static inline int predict(int16_t *src, int16_t *last)
{
const int LT= last[-1];
const int T= last[ 0];
const int L = src[-1];
return mid_pred(L, L + T - LT, T);
}
static inline int get_context(PlaneContext *p, int16_t *src,
int16_t *last, int16_t *last2)
{
const int LT= last[-1];
const int T= last[ 0];
const int RT= last[ 1];
const int L = src[-1];
if(p->quant_table[3][127]){
const int TT= last2[0];
const int LL= src[-2];
return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF]
+p->quant_table[3][(LL-L) & 0xFF] + p->quant_table[4][(TT-T) & 0xFF];
}else
return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF];
}
static void find_best_state(uint8_t best_state[256][256], const uint8_t one_state[256]){
int i,j,k,m;
double l2tab[256];
for(i=1; i<256; i++)
l2tab[i]= log2(i/256.0);
for(i=0; i<256; i++){
double best_len[256];
double p= i/256.0;
for(j=0; j<256; j++)
best_len[j]= 1<<30;
for(j=FFMAX(i-10,1); j<FFMIN(i+11,256); j++){
double occ[256]={0};
double len=0;
occ[j]=1.0;
for(k=0; k<256; k++){
double newocc[256]={0};
for(m=0; m<256; m++){
if(occ[m]){
len -=occ[m]*( p *l2tab[ m]
+ (1-p)*l2tab[256-m]);
}
}
if(len < best_len[k]){
best_len[k]= len;
best_state[i][k]= j;
}
for(m=0; m<256; m++){
if(occ[m]){
newocc[ one_state[ m]] += occ[m]* p ;
newocc[256-one_state[256-m]] += occ[m]*(1-p);
}
}
memcpy(occ, newocc, sizeof(occ));
}
}
}
}
static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c, uint8_t *state, int v, int is_signed, uint64_t rc_stat[256][2], uint64_t rc_stat2[32][2]){
int i;
#define put_rac(C,S,B) \
do{\
if(rc_stat){\
rc_stat[*(S)][B]++;\
rc_stat2[(S)-state][B]++;\
}\
put_rac(C,S,B);\
}while(0)
if(v){
const int a= FFABS(v);
const int e= av_log2(a);
put_rac(c, state+0, 0);
if(e<=9){
for(i=0; i<e; i++){
put_rac(c, state+1+i, 1); //1..10
}
put_rac(c, state+1+i, 0);
for(i=e-1; i>=0; i--){
put_rac(c, state+22+i, (a>>i)&1); //22..31
}
if(is_signed)
put_rac(c, state+11 + e, v < 0); //11..21
}else{
for(i=0; i<e; i++){
put_rac(c, state+1+FFMIN(i,9), 1); //1..10
}
put_rac(c, state+1+9, 0);
for(i=e-1; i>=0; i--){
put_rac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31
}
if(is_signed)
put_rac(c, state+11 + 10, v < 0); //11..21
}
}else{
put_rac(c, state+0, 1);
}
#undef put_rac
}
static void av_noinline put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
put_symbol_inline(c, state, v, is_signed, NULL, NULL);
}
static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed){
if(get_rac(c, state+0))
return 0;
else{
int i, e, a;
e= 0;
while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
e++;
}
a= 1;
for(i=e-1; i>=0; i--){
a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
}
e= -(is_signed && get_rac(c, state+11 + FFMIN(e, 10))); //11..21
return (a^e)-e;
}
}
static int av_noinline get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
return get_symbol_inline(c, state, is_signed);
}
static inline void update_vlc_state(VlcState * const state, const int v){
int drift= state->drift;
int count= state->count;
state->error_sum += FFABS(v);
drift += v;
if(count == 128){ //FIXME variable
count >>= 1;
drift >>= 1;
state->error_sum >>= 1;
}
count++;
if(drift <= -count){
if(state->bias > -128) state->bias--;
drift += count;
if(drift <= -count)
drift= -count + 1;
}else if(drift > 0){
if(state->bias < 127) state->bias++;
drift -= count;
if(drift > 0)
drift= 0;
}
state->drift= drift;
state->count= count;
}
static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int v, int bits){
int i, k, code;
//printf("final: %d ", v);
v = fold(v - state->bias, bits);
i= state->count;
k=0;
while(i < state->error_sum){ //FIXME optimize
k++;
i += i;
}
assert(k<=8);
#if 0 // JPEG LS
if(k==0 && 2*state->drift <= - state->count) code= v ^ (-1);
else code= v;
#else
code= v ^ ((2*state->drift + state->count)>>31);
#endif
//printf("v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code, state->bias, state->error_sum, state->drift, state->count, k);
set_sr_golomb(pb, code, k, 12, bits);
update_vlc_state(state, v);
}
static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state, int bits){
int k, i, v, ret;
i= state->count;
k=0;
while(i < state->error_sum){ //FIXME optimize
k++;
i += i;
}
assert(k<=8);
v= get_sr_golomb(gb, k, 12, bits);
//printf("v:%d bias:%d error:%d drift:%d count:%d k:%d", v, state->bias, state->error_sum, state->drift, state->count, k);
#if 0 // JPEG LS
if(k==0 && 2*state->drift <= - state->count) v ^= (-1);
#else
v ^= ((2*state->drift + state->count)>>31);
#endif
ret= fold(v + state->bias, bits);
update_vlc_state(state, v);
//printf("final: %d\n", ret);
return ret;
}
#if CONFIG_FFV1_ENCODER
static av_always_inline int encode_line(FFV1Context *s, int w,
int16_t *sample[2],
int plane_index, int bits)
{
PlaneContext * const p= &s->plane[plane_index];
RangeCoder * const c= &s->c;
int x;
int run_index= s->run_index;
int run_count=0;
int run_mode=0;
if(s->ac){
if(c->bytestream_end - c->bytestream < w*20){
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
}else{
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < w*4){
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
}
for(x=0; x<w; x++){
int diff, context;
context= get_context(p, sample[0]+x, sample[1]+x, sample[2]+x);
diff= sample[0][x] - predict(sample[0]+x, sample[1]+x);
if(context < 0){
context = -context;
diff= -diff;
}
diff= fold(diff, bits);
if(s->ac){
if(s->flags & CODEC_FLAG_PASS1){
put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat, s->rc_stat2[p->quant_table_index][context]);
}else{
put_symbol_inline(c, p->state[context], diff, 1, NULL, NULL);
}
}else{
if(context == 0) run_mode=1;
if(run_mode){
if(diff){
while(run_count >= 1<<ff_log2_run[run_index]){
run_count -= 1<<ff_log2_run[run_index];
run_index++;
put_bits(&s->pb, 1, 1);
}
put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
if(run_index) run_index--;
run_count=0;
run_mode=0;
if(diff>0) diff--;
}else{
run_count++;
}
}
// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)put_bits_count(&s->pb));
if(run_mode == 0)
put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits);
}
}
if(run_mode){
while(run_count >= 1<<ff_log2_run[run_index]){
run_count -= 1<<ff_log2_run[run_index];
run_index++;
put_bits(&s->pb, 1, 1);
}
if(run_count)
put_bits(&s->pb, 1, 1);
}
s->run_index= run_index;
return 0;
}
static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
int x,y,i;
const int ring_size= s->avctx->context_model ? 3 : 2;
int16_t *sample[3];
s->run_index=0;
memset(s->sample_buffer, 0, ring_size*(w+6)*sizeof(*s->sample_buffer));
for(y=0; y<h; y++){
for(i=0; i<ring_size; i++)
sample[i]= s->sample_buffer + (w+6)*((h+i-y)%ring_size) + 3;
sample[0][-1]= sample[1][0 ];
sample[1][ w]= sample[1][w-1];
//{START_TIMER
if(s->avctx->bits_per_raw_sample<=8){
for(x=0; x<w; x++){
sample[0][x]= src[x + stride*y];
}
encode_line(s, w, sample, plane_index, 8);
}else{
if(s->packed_at_lsb){
for(x=0; x<w; x++){
sample[0][x]= ((uint16_t*)(src + stride*y))[x];
}
}else{
for(x=0; x<w; x++){
sample[0][x]= ((uint16_t*)(src + stride*y))[x] >> (16 - s->avctx->bits_per_raw_sample);
}
}
encode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
}
//STOP_TIMER("encode line")}
}
}
static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){
int x, y, p, i;
const int ring_size= s->avctx->context_model ? 3 : 2;
int16_t *sample[3][3];
s->run_index=0;
memset(s->sample_buffer, 0, ring_size*3*(w+6)*sizeof(*s->sample_buffer));
for(y=0; y<h; y++){
for(i=0; i<ring_size; i++)
for(p=0; p<3; p++)
sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3;
for(x=0; x<w; x++){
int v= src[x + stride*y];
int b= v&0xFF;
int g= (v>>8)&0xFF;
int r= (v>>16)&0xFF;
b -= g;
r -= g;
g += (b + r)>>2;
b += 0x100;
r += 0x100;
// assert(g>=0 && b>=0 && r>=0);
// assert(g<256 && b<512 && r<512);
sample[0][0][x]= g;
sample[1][0][x]= b;
sample[2][0][x]= r;
}
for(p=0; p<3; p++){
sample[p][0][-1]= sample[p][1][0 ];
sample[p][1][ w]= sample[p][1][w-1];
encode_line(s, w, sample[p], FFMIN(p, 1), 9);
}
}
}
static void write_quant_table(RangeCoder *c, int16_t *quant_table){
int last=0;
int i;
uint8_t state[CONTEXT_SIZE];
memset(state, 128, sizeof(state));
for(i=1; i<128 ; i++){
if(quant_table[i] != quant_table[i-1]){
put_symbol(c, state, i-last-1, 0);
last= i;
}
}
put_symbol(c, state, i-last-1, 0);
}
static void write_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){
int i;
for(i=0; i<5; i++)
write_quant_table(c, quant_table[i]);
}
static void write_header(FFV1Context *f){
uint8_t state[CONTEXT_SIZE];
int i, j;
RangeCoder * const c= &f->slice_context[0]->c;
memset(state, 128, sizeof(state));
if(f->version < 2){
put_symbol(c, state, f->version, 0);
put_symbol(c, state, f->ac, 0);
if(f->ac>1){
for(i=1; i<256; i++){
put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
}
}
put_symbol(c, state, f->colorspace, 0); //YUV cs type
if(f->version>0)
put_symbol(c, state, f->avctx->bits_per_raw_sample, 0);
put_rac(c, state, 1); //chroma planes
put_symbol(c, state, f->chroma_h_shift, 0);
put_symbol(c, state, f->chroma_v_shift, 0);
put_rac(c, state, 0); //no transparency plane
write_quant_tables(c, f->quant_table);
}else{
put_symbol(c, state, f->slice_count, 0);
for(i=0; i<f->slice_count; i++){
FFV1Context *fs= f->slice_context[i];
put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
for(j=0; j<f->plane_count; j++){
put_symbol(c, state, f->plane[j].quant_table_index, 0);
av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);
}
}
}
}
#endif /* CONFIG_FFV1_ENCODER */
static av_cold int common_init(AVCodecContext *avctx){
FFV1Context *s = avctx->priv_data;
s->avctx= avctx;
s->flags= avctx->flags;
avcodec_get_frame_defaults(&s->picture);
dsputil_init(&s->dsp, avctx);
s->width = avctx->width;
s->height= avctx->height;
assert(s->width && s->height);
//defaults
s->num_h_slices=1;
s->num_v_slices=1;
return 0;
}
static int init_slice_state(FFV1Context *f){
int i, j;
for(i=0; i<f->slice_count; i++){
FFV1Context *fs= f->slice_context[i];
for(j=0; j<f->plane_count; j++){
PlaneContext * const p= &fs->plane[j];
if(fs->ac){
if(!p-> state) p-> state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t));
if(!p-> state)
return AVERROR(ENOMEM);
}else{
if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState));
if(!p->vlc_state)
return AVERROR(ENOMEM);
}
}
if (fs->ac>1){
//FIXME only redo if state_transition changed
for(j=1; j<256; j++){
fs->c.one_state [ j]= fs->state_transition[j];
fs->c.zero_state[256-j]= 256-fs->c.one_state [j];
}
}
}
return 0;
}
static av_cold int init_slice_contexts(FFV1Context *f){
int i;
f->slice_count= f->num_h_slices * f->num_v_slices;
for(i=0; i<f->slice_count; i++){
FFV1Context *fs= av_mallocz(sizeof(*fs));
int sx= i % f->num_h_slices;
int sy= i / f->num_h_slices;
int sxs= f->avctx->width * sx / f->num_h_slices;
int sxe= f->avctx->width *(sx+1) / f->num_h_slices;
int sys= f->avctx->height* sy / f->num_v_slices;
int sye= f->avctx->height*(sy+1) / f->num_v_slices;
f->slice_context[i]= fs;
memcpy(fs, f, sizeof(*fs));
memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2));
fs->slice_width = sxe - sxs;
fs->slice_height= sye - sys;
fs->slice_x = sxs;
fs->slice_y = sys;
fs->sample_buffer = av_malloc(9 * (fs->width+6) * sizeof(*fs->sample_buffer));
if (!fs->sample_buffer)
return AVERROR(ENOMEM);
}
return 0;
}
static int allocate_initial_states(FFV1Context *f){
int i;
for(i=0; i<f->quant_table_count; i++){
f->initial_states[i]= av_malloc(f->context_count[i]*sizeof(*f->initial_states[i]));
if(!f->initial_states[i])
return AVERROR(ENOMEM);
memset(f->initial_states[i], 128, f->context_count[i]*sizeof(*f->initial_states[i]));
}
return 0;
}
#if CONFIG_FFV1_ENCODER
static int write_extra_header(FFV1Context *f){
RangeCoder * const c= &f->c;
uint8_t state[CONTEXT_SIZE];
int i, j, k;
uint8_t state2[32][CONTEXT_SIZE];
memset(state2, 128, sizeof(state2));
memset(state, 128, sizeof(state));
f->avctx->extradata= av_malloc(f->avctx->extradata_size= 10000 + (11*11*5*5*5+11*11*11)*32);
ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
put_symbol(c, state, f->version, 0);
put_symbol(c, state, f->ac, 0);
if(f->ac>1){
for(i=1; i<256; i++){
put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
}
}
put_symbol(c, state, f->colorspace, 0); //YUV cs type
put_symbol(c, state, f->avctx->bits_per_raw_sample, 0);
put_rac(c, state, 1); //chroma planes
put_symbol(c, state, f->chroma_h_shift, 0);
put_symbol(c, state, f->chroma_v_shift, 0);
put_rac(c, state, 0); //no transparency plane
put_symbol(c, state, f->num_h_slices-1, 0);
put_symbol(c, state, f->num_v_slices-1, 0);
put_symbol(c, state, f->quant_table_count, 0);
for(i=0; i<f->quant_table_count; i++)
write_quant_tables(c, f->quant_tables[i]);
for(i=0; i<f->quant_table_count; i++){
for(j=0; j<f->context_count[i]*CONTEXT_SIZE; j++)
if(f->initial_states[i] && f->initial_states[i][0][j] != 128)
break;
if(j<f->context_count[i]*CONTEXT_SIZE){
put_rac(c, state, 1);
for(j=0; j<f->context_count[i]; j++){
for(k=0; k<CONTEXT_SIZE; k++){
int pred= j ? f->initial_states[i][j-1][k] : 128;
put_symbol(c, state2[k], (int8_t)(f->initial_states[i][j][k]-pred), 1);
}
}
}else{
put_rac(c, state, 0);
}
}
f->avctx->extradata_size= ff_rac_terminate(c);
return 0;
}
static int sort_stt(FFV1Context *s, uint8_t stt[256]){
int i,i2,changed,print=0;
do{
changed=0;
for(i=12; i<244; i++){
for(i2=i+1; i2<245 && i2<i+4; i2++){
#define COST(old, new) \
s->rc_stat[old][0]*-log2((256-(new))/256.0)\
+s->rc_stat[old][1]*-log2( (new) /256.0)
#define COST2(old, new) \
COST(old, new)\
+COST(256-(old), 256-(new))
double size0= COST2(i, i ) + COST2(i2, i2);
double sizeX= COST2(i, i2) + COST2(i2, i );
if(sizeX < size0 && i!=128 && i2!=128){
int j;
FFSWAP(int, stt[ i], stt[ i2]);
FFSWAP(int, s->rc_stat[i ][0],s->rc_stat[ i2][0]);
FFSWAP(int, s->rc_stat[i ][1],s->rc_stat[ i2][1]);
if(i != 256-i2){
FFSWAP(int, stt[256-i], stt[256-i2]);
FFSWAP(int, s->rc_stat[256-i][0],s->rc_stat[256-i2][0]);
FFSWAP(int, s->rc_stat[256-i][1],s->rc_stat[256-i2][1]);
}
for(j=1; j<256; j++){
if (stt[j] == i ) stt[j] = i2;
else if(stt[j] == i2) stt[j] = i ;
if(i != 256-i2){
if (stt[256-j] == 256-i ) stt[256-j] = 256-i2;
else if(stt[256-j] == 256-i2) stt[256-j] = 256-i ;
}
}
print=changed=1;
}
}
}
}while(changed);
return print;
}
static av_cold int encode_init(AVCodecContext *avctx)
{
FFV1Context *s = avctx->priv_data;
int i, j, k, m;
common_init(avctx);
s->version=0;
s->ac= avctx->coder_type ? 2:0;
if(s->ac>1)
for(i=1; i<256; i++)
s->state_transition[i]=ver2_state[i];
s->plane_count=2;
for(i=0; i<256; i++){
s->quant_table_count=2;
if(avctx->bits_per_raw_sample <=8){
s->quant_tables[0][0][i]= quant11[i];
s->quant_tables[0][1][i]= 11*quant11[i];
s->quant_tables[0][2][i]= 11*11*quant11[i];
s->quant_tables[1][0][i]= quant11[i];
s->quant_tables[1][1][i]= 11*quant11[i];
s->quant_tables[1][2][i]= 11*11*quant5 [i];
s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
}else{
s->quant_tables[0][0][i]= quant9_10bit[i];
s->quant_tables[0][1][i]= 11*quant9_10bit[i];
s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
s->quant_tables[1][0][i]= quant9_10bit[i];
s->quant_tables[1][1][i]= 11*quant9_10bit[i];
s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
}
}
s->context_count[0]= (11*11*11+1)/2;
s->context_count[1]= (11*11*5*5*5+1)/2;
memcpy(s->quant_table, s->quant_tables[avctx->context_model], sizeof(s->quant_table));
for(i=0; i<s->plane_count; i++){
PlaneContext * const p= &s->plane[i];
memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
p->quant_table_index= avctx->context_model;
p->context_count= s->context_count[p->quant_table_index];
}
if(allocate_initial_states(s) < 0)
return AVERROR(ENOMEM);
avctx->coded_frame= &s->picture;
switch(avctx->pix_fmt){
case PIX_FMT_YUV420P9:
case PIX_FMT_YUV420P10:
case PIX_FMT_YUV422P10:
s->packed_at_lsb = 1;
case PIX_FMT_YUV444P16:
case PIX_FMT_YUV422P16:
case PIX_FMT_YUV420P16:
if(avctx->bits_per_raw_sample <=8){
av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
return -1;
}
if(!s->ac){
av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
return -1;
}
s->version= FFMAX(s->version, 1);
case PIX_FMT_YUV444P:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV420P:
case PIX_FMT_YUV411P:
case PIX_FMT_YUV410P:
s->colorspace= 0;
break;
case PIX_FMT_RGB32:
s->colorspace= 1;
break;
default:
av_log(avctx, AV_LOG_ERROR, "format not supported\n");
return -1;
}
avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
s->picture_number=0;
if(avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)){
for(i=0; i<s->quant_table_count; i++){
s->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*s->rc_stat2[i]));
if(!s->rc_stat2[i])
return AVERROR(ENOMEM);
}
}
if(avctx->stats_in){
char *p= avctx->stats_in;
uint8_t best_state[256][256];
int gob_count=0;
char *next;
av_assert0(s->version>=2);
for(;;){
for(j=0; j<256; j++){
for(i=0; i<2; i++){
s->rc_stat[j][i]= strtol(p, &next, 0);
if(next==p){
av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d [%s]\n", j,i,p);
return -1;
}
p=next;
}
}
for(i=0; i<s->quant_table_count; i++){
for(j=0; j<s->context_count[i]; j++){
for(k=0; k<32; k++){
for(m=0; m<2; m++){
s->rc_stat2[i][j][k][m]= strtol(p, &next, 0);
if(next==p){
av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d %d %d [%s]\n", i,j,k,m,p);
return -1;
}
p=next;
}
}
}
}
gob_count= strtol(p, &next, 0);
if(next==p || gob_count <0){
av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
return -1;
}
p=next;
while(*p=='\n' || *p==' ') p++;
if(p[0]==0) break;
}
sort_stt(s, s->state_transition);
find_best_state(best_state, s->state_transition);
for(i=0; i<s->quant_table_count; i++){
for(j=0; j<s->context_count[i]; j++){
for(k=0; k<32; k++){
double p= 128;
if(s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]){
p=256.0*s->rc_stat2[i][j][k][1] / (s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]);
}
s->initial_states[i][j][k]= best_state[av_clip(round(p), 1, 255)][av_clip((s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1])/gob_count, 0, 255)];
}
}
}
}
if(s->version>1){
s->num_h_slices=2;
s->num_v_slices=2;
write_extra_header(s);
}
if(init_slice_contexts(s) < 0)
return -1;
if(init_slice_state(s) < 0)
return -1;
#define STATS_OUT_SIZE 1024*1024*6
if(avctx->flags & CODEC_FLAG_PASS1){
avctx->stats_out= av_mallocz(STATS_OUT_SIZE);
for(i=0; i<s->quant_table_count; i++){
for(j=0; j<s->slice_count; j++){
FFV1Context *sf= s->slice_context[j];
av_assert0(!sf->rc_stat2[i]);
sf->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*sf->rc_stat2[i]));
if(!sf->rc_stat2[i])
return AVERROR(ENOMEM);
}
}
}
return 0;
}
#endif /* CONFIG_FFV1_ENCODER */
static void clear_state(FFV1Context *f){
int i, si, j;
for(si=0; si<f->slice_count; si++){
FFV1Context *fs= f->slice_context[si];
for(i=0; i<f->plane_count; i++){
PlaneContext *p= &fs->plane[i];
p->interlace_bit_state[0]= 128;
p->interlace_bit_state[1]= 128;
if(fs->ac){
if(f->initial_states[p->quant_table_index]){
memcpy(p->state, f->initial_states[p->quant_table_index], CONTEXT_SIZE*p->context_count);
}else
memset(p->state, 128, CONTEXT_SIZE*p->context_count);
}else{
for(j=0; j<p->context_count; j++){
p->vlc_state[j].drift= 0;
p->vlc_state[j].error_sum= 4; //FFMAX((RANGE + 32)/64, 2);
p->vlc_state[j].bias= 0;
p->vlc_state[j].count= 1;
}
}
}
}
}
#if CONFIG_FFV1_ENCODER
static int encode_slice(AVCodecContext *c, void *arg){
FFV1Context *fs= *(void**)arg;
FFV1Context *f= fs->avctx->priv_data;
int width = fs->slice_width;
int height= fs->slice_height;
int x= fs->slice_x;
int y= fs->slice_y;
AVFrame * const p= &f->picture;
if(f->colorspace==0){
const int chroma_width = -((-width )>>f->chroma_h_shift);
const int chroma_height= -((-height)>>f->chroma_v_shift);
const int cx= x>>f->chroma_h_shift;
const int cy= y>>f->chroma_v_shift;
encode_plane(fs, p->data[0] + x + y*p->linesize[0], width, height, p->linesize[0], 0);
encode_plane(fs, p->data[1] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
encode_plane(fs, p->data[2] + cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
}else{
encode_rgb_frame(fs, (uint32_t*)(p->data[0]) + x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);
}
emms_c();
return 0;
}
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
FFV1Context *f = avctx->priv_data;
RangeCoder * const c= &f->slice_context[0]->c;
AVFrame *pict = data;
AVFrame * const p= &f->picture;
int used_count= 0;
uint8_t keystate=128;
uint8_t *buf_p;
int i;
ff_init_range_encoder(c, buf, buf_size);
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
*p = *pict;
p->pict_type= AV_PICTURE_TYPE_I;
if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){
put_rac(c, &keystate, 1);
p->key_frame= 1;
f->gob_count++;
write_header(f);
clear_state(f);
}else{
put_rac(c, &keystate, 0);
p->key_frame= 0;
}
if(!f->ac){
used_count += ff_rac_terminate(c);
//printf("pos=%d\n", used_count);
init_put_bits(&f->slice_context[0]->pb, buf + used_count, buf_size - used_count);
}else if (f->ac>1){
int i;
for(i=1; i<256; i++){
c->one_state[i]= f->state_transition[i];
c->zero_state[256-i]= 256-c->one_state[i];
}
}
for(i=1; i<f->slice_count; i++){
FFV1Context *fs= f->slice_context[i];
uint8_t *start= buf + (buf_size-used_count)*i/f->slice_count;
int len= buf_size/f->slice_count;
if(fs->ac){
ff_init_range_encoder(&fs->c, start, len);
}else{
init_put_bits(&fs->pb, start, len);
}
}
avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
buf_p=buf;
for(i=0; i<f->slice_count; i++){
FFV1Context *fs= f->slice_context[i];
int bytes;
if(fs->ac){
uint8_t state=128;
put_rac(&fs->c, &state, 0);
bytes= ff_rac_terminate(&fs->c);
}else{
flush_put_bits(&fs->pb); //nicer padding FIXME
bytes= used_count + (put_bits_count(&fs->pb)+7)/8;
used_count= 0;
}
if(i>0){
av_assert0(bytes < buf_size/f->slice_count);
memmove(buf_p, fs->ac ? fs->c.bytestream_start : fs->pb.buf, bytes);
av_assert0(bytes < (1<<24));
AV_WB24(buf_p+bytes, bytes);
bytes+=3;
}
buf_p += bytes;
}
if((avctx->flags&CODEC_FLAG_PASS1) && (f->picture_number&31)==0){
int j, k, m;
char *p= avctx->stats_out;
char *end= p + STATS_OUT_SIZE;
memset(f->rc_stat, 0, sizeof(f->rc_stat));
for(i=0; i<f->quant_table_count; i++)
memset(f->rc_stat2[i], 0, f->context_count[i]*sizeof(*f->rc_stat2[i]));
for(j=0; j<f->slice_count; j++){
FFV1Context *fs= f->slice_context[j];
for(i=0; i<256; i++){
f->rc_stat[i][0] += fs->rc_stat[i][0];
f->rc_stat[i][1] += fs->rc_stat[i][1];
}
for(i=0; i<f->quant_table_count; i++){
for(k=0; k<f->context_count[i]; k++){
for(m=0; m<32; m++){
f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
}
}
}
}
for(j=0; j<256; j++){
snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat[j][0], f->rc_stat[j][1]);
p+= strlen(p);
}
snprintf(p, end-p, "\n");
for(i=0; i<f->quant_table_count; i++){
for(j=0; j<f->context_count[i]; j++){
for(m=0; m<32; m++){
snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
p+= strlen(p);
}
}
}
snprintf(p, end-p, "%d\n", f->gob_count);
} else if(avctx->flags&CODEC_FLAG_PASS1)
avctx->stats_out[0] = '\0';
f->picture_number++;
return buf_p-buf;
}
#endif /* CONFIG_FFV1_ENCODER */
static av_cold int common_end(AVCodecContext *avctx){
FFV1Context *s = avctx->priv_data;
int i, j;
if (avctx->codec->decode && s->picture.data[0])
avctx->release_buffer(avctx, &s->picture);
for(j=0; j<s->slice_count; j++){
FFV1Context *fs= s->slice_context[j];
for(i=0; i<s->plane_count; i++){
PlaneContext *p= &fs->plane[i];
av_freep(&p->state);
av_freep(&p->vlc_state);
}
av_freep(&fs->sample_buffer);
}
av_freep(&avctx->stats_out);
for(j=0; j<s->quant_table_count; j++){
av_freep(&s->initial_states[j]);
for(i=0; i<s->slice_count; i++){
FFV1Context *sf= s->slice_context[i];
av_freep(&sf->rc_stat2[j]);
}
av_freep(&s->rc_stat2[j]);
}
for(i=0; i<s->slice_count; i++){
av_freep(&s->slice_context[i]);
}
return 0;
}
static av_always_inline void decode_line(FFV1Context *s, int w,
int16_t *sample[2],
int plane_index, int bits)
{
PlaneContext * const p= &s->plane[plane_index];
RangeCoder * const c= &s->c;
int x;
int run_count=0;
int run_mode=0;
int run_index= s->run_index;
for(x=0; x<w; x++){
int diff, context, sign;
context= get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);
if(context < 0){
context= -context;
sign=1;
}else
sign=0;
av_assert2(context < p->context_count);
if(s->ac){
diff= get_symbol_inline(c, p->state[context], 1);
}else{
if(context == 0 && run_mode==0) run_mode=1;
if(run_mode){
if(run_count==0 && run_mode==1){
if(get_bits1(&s->gb)){
run_count = 1<<ff_log2_run[run_index];
if(x + run_count <= w) run_index++;
}else{
if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_log2_run[run_index]);
else run_count=0;
if(run_index) run_index--;
run_mode=2;
}
}
run_count--;
if(run_count < 0){
run_mode=0;
run_count=0;
diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
if(diff>=0) diff++;
}else
diff=0;
}else
diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, get_bits_count(&s->gb));
}
if(sign) diff= -diff;
sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1);
}
s->run_index= run_index;
}
static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
int x, y;
int16_t *sample[2];
sample[0]=s->sample_buffer +3;
sample[1]=s->sample_buffer+w+6+3;
s->run_index=0;
memset(s->sample_buffer, 0, 2*(w+6)*sizeof(*s->sample_buffer));
for(y=0; y<h; y++){
int16_t *temp = sample[0]; //FIXME try a normal buffer
sample[0]= sample[1];
sample[1]= temp;
sample[1][-1]= sample[0][0 ];
sample[0][ w]= sample[0][w-1];
//{START_TIMER
if(s->avctx->bits_per_raw_sample <= 8){
decode_line(s, w, sample, plane_index, 8);
for(x=0; x<w; x++){
src[x + stride*y]= sample[1][x];
}
}else{
decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
if(s->packed_at_lsb){
for(x=0; x<w; x++){
((uint16_t*)(src + stride*y))[x]= sample[1][x];
}
}else{
for(x=0; x<w; x++){
((uint16_t*)(src + stride*y))[x]= sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
}
}
}
//STOP_TIMER("decode-line")}
}
}
static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){
int x, y, p;
int16_t *sample[3][2];
for(x=0; x<3; x++){
sample[x][0] = s->sample_buffer + x*2 *(w+6) + 3;
sample[x][1] = s->sample_buffer + (x*2+1)*(w+6) + 3;
}
s->run_index=0;
memset(s->sample_buffer, 0, 6*(w+6)*sizeof(*s->sample_buffer));
for(y=0; y<h; y++){
for(p=0; p<3; p++){
int16_t *temp = sample[p][0]; //FIXME try a normal buffer
sample[p][0]= sample[p][1];
sample[p][1]= temp;
sample[p][1][-1]= sample[p][0][0 ];
sample[p][0][ w]= sample[p][0][w-1];
decode_line(s, w, sample[p], FFMIN(p, 1), 9);
}
for(x=0; x<w; x++){
int g= sample[0][1][x];
int b= sample[1][1][x];
int r= sample[2][1][x];
// assert(g>=0 && b>=0 && r>=0);
// assert(g<256 && b<512 && r<512);
b -= 0x100;
r -= 0x100;
g -= (b + r)>>2;
b += g;
r += g;
src[x + stride*y]= b + (g<<8) + (r<<16) + (0xFF<<24);
}
}
}
static int decode_slice(AVCodecContext *c, void *arg){
FFV1Context *fs= *(void**)arg;
FFV1Context *f= fs->avctx->priv_data;
int width = fs->slice_width;
int height= fs->slice_height;
int x= fs->slice_x;
int y= fs->slice_y;
AVFrame * const p= &f->picture;
av_assert1(width && height);
if(f->colorspace==0){
const int chroma_width = -((-width )>>f->chroma_h_shift);
const int chroma_height= -((-height)>>f->chroma_v_shift);
const int cx= x>>f->chroma_h_shift;
const int cy= y>>f->chroma_v_shift;
decode_plane(fs, p->data[0] + x + y*p->linesize[0], width, height, p->linesize[0], 0);
decode_plane(fs, p->data[1] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
decode_plane(fs, p->data[2] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[2], 1);
}else{
decode_rgb_frame(fs, (uint32_t*)p->data[0] + x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);
}
emms_c();
return 0;
}
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){
int v;
int i=0;
uint8_t state[CONTEXT_SIZE];
memset(state, 128, sizeof(state));
for(v=0; i<128 ; v++){
int len= get_symbol(c, state, 0) + 1;
if(len + i > 128) return -1;
while(len--){
quant_table[i] = scale*v;
i++;
//printf("%2d ",v);
//if(i%16==0) printf("\n");
}
}
for(i=1; i<128; i++){
quant_table[256-i]= -quant_table[i];
}
quant_table[128]= -quant_table[127];
return 2*v - 1;
}
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){
int i;
int context_count=1;
for(i=0; i<5; i++){
context_count*= read_quant_table(c, quant_table[i], context_count);
if(context_count > 32768U){
return -1;
}
}
return (context_count+1)/2;
}
static int read_extra_header(FFV1Context *f){
RangeCoder * const c= &f->c;
uint8_t state[CONTEXT_SIZE];
int i, j, k;
uint8_t state2[32][CONTEXT_SIZE];
memset(state2, 128, sizeof(state2));
memset(state, 128, sizeof(state));
ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
f->version= get_symbol(c, state, 0);
f->ac= f->avctx->coder_type= get_symbol(c, state, 0);
if(f->ac>1){
for(i=1; i<256; i++){
f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];
}
}
f->colorspace= get_symbol(c, state, 0); //YUV cs type
f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);
get_rac(c, state); //no chroma = false
f->chroma_h_shift= get_symbol(c, state, 0);
f->chroma_v_shift= get_symbol(c, state, 0);
get_rac(c, state); //transparency plane
f->plane_count= 2;
f->num_h_slices= 1 + get_symbol(c, state, 0);
f->num_v_slices= 1 + get_symbol(c, state, 0);
if(f->num_h_slices > (unsigned)f->width || f->num_v_slices > (unsigned)f->height){
av_log(f->avctx, AV_LOG_ERROR, "too many slices\n");
return -1;
}
f->quant_table_count= get_symbol(c, state, 0);
if(f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
return -1;
for(i=0; i<f->quant_table_count; i++){
if((f->context_count[i]= read_quant_tables(c, f->quant_tables[i])) < 0){
av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
return -1;
}
}
if(allocate_initial_states(f) < 0)
return AVERROR(ENOMEM);
for(i=0; i<f->quant_table_count; i++){
if(get_rac(c, state)){
for(j=0; j<f->context_count[i]; j++){
for(k=0; k<CONTEXT_SIZE; k++){
int pred= j ? f->initial_states[i][j-1][k] : 128;
f->initial_states[i][j][k]= (pred+get_symbol(c, state2[k], 1))&0xFF;
}
}
}
}
return 0;
}
static int read_header(FFV1Context *f){
uint8_t state[CONTEXT_SIZE];
int i, j, context_count;
RangeCoder * const c= &f->slice_context[0]->c;
memset(state, 128, sizeof(state));
if(f->version < 2){
f->version= get_symbol(c, state, 0);
f->ac= f->avctx->coder_type= get_symbol(c, state, 0);
if(f->ac>1){
for(i=1; i<256; i++){
f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];
}
}
f->colorspace= get_symbol(c, state, 0); //YUV cs type
if(f->version>0)
f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);
get_rac(c, state); //no chroma = false
f->chroma_h_shift= get_symbol(c, state, 0);
f->chroma_v_shift= get_symbol(c, state, 0);
get_rac(c, state); //transparency plane
f->plane_count= 2;
}
if(f->colorspace==0){
if(f->avctx->bits_per_raw_sample<=8){
switch(16*f->chroma_h_shift + f->chroma_v_shift){
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break;
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break;
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break;
case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break;
case 0x22: f->avctx->pix_fmt= PIX_FMT_YUV410P; break;
default:
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
return -1;
}
}else if(f->avctx->bits_per_raw_sample==9) {
switch(16*f->chroma_h_shift + f->chroma_v_shift){
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break;
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break;
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P9 ; f->packed_at_lsb=1; break;
default:
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
return -1;
}
}else if(f->avctx->bits_per_raw_sample==10) {
switch(16*f->chroma_h_shift + f->chroma_v_shift){
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break;
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P10; f->packed_at_lsb=1; break;
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P10; f->packed_at_lsb=1; break;
default:
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
return -1;
}
}else {
switch(16*f->chroma_h_shift + f->chroma_v_shift){
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break;
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break;
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P16; break;
default:
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
return -1;
}
}
}else if(f->colorspace==1){
if(f->chroma_h_shift || f->chroma_v_shift){
av_log(f->avctx, AV_LOG_ERROR, "chroma subsampling not supported in this colorspace\n");
return -1;
}
f->avctx->pix_fmt= PIX_FMT_RGB32;
}else{
av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
return -1;
}
//printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt);
if(f->version < 2){
context_count= read_quant_tables(c, f->quant_table);
if(context_count < 0){
av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
return -1;
}
}else{
f->slice_count= get_symbol(c, state, 0);
if(f->slice_count > (unsigned)MAX_SLICES)
return -1;
}
for(j=0; j<f->slice_count; j++){
FFV1Context *fs= f->slice_context[j];
fs->ac= f->ac;
fs->packed_at_lsb= f->packed_at_lsb;
if(f->version >= 2){
fs->slice_x = get_symbol(c, state, 0) *f->width ;
fs->slice_y = get_symbol(c, state, 0) *f->height;
fs->slice_width =(get_symbol(c, state, 0)+1)*f->width + fs->slice_x;
fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y;
fs->slice_x /= f->num_h_slices;
fs->slice_y /= f->num_v_slices;
fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
return -1;
if( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
|| (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
return -1;
}
for(i=0; i<f->plane_count; i++){
PlaneContext * const p= &fs->plane[i];
if(f->version >= 2){
int idx=get_symbol(c, state, 0);
if(idx > (unsigned)f->quant_table_count){
av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
return -1;
}
p->quant_table_index= idx;
memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
context_count= f->context_count[idx];
}else{
memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
}
if(p->context_count < context_count){
av_freep(&p->state);
av_freep(&p->vlc_state);
}
p->context_count= context_count;
}
}
return 0;
}
static av_cold int decode_init(AVCodecContext *avctx)
{
FFV1Context *f = avctx->priv_data;
common_init(avctx);
if(avctx->extradata && read_extra_header(f) < 0)
return -1;
if(init_slice_contexts(f) < 0)
return -1;
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
FFV1Context *f = avctx->priv_data;
RangeCoder * const c= &f->slice_context[0]->c;
AVFrame * const p= &f->picture;
int bytes_read, i;
uint8_t keystate= 128;
const uint8_t *buf_p;
AVFrame *picture = data;
/* release previously stored data */
if (p->data[0])
avctx->release_buffer(avctx, p);
ff_init_range_decoder(c, buf, buf_size);
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
p->pict_type= AV_PICTURE_TYPE_I; //FIXME I vs. P
if(get_rac(c, &keystate)){
p->key_frame= 1;
if(read_header(f) < 0)
return -1;
if(init_slice_state(f) < 0)
return -1;
clear_state(f);
}else{
p->key_frame= 0;
}
if(f->ac>1){
int i;
for(i=1; i<256; i++){
c->one_state[i]= f->state_transition[i];
c->zero_state[256-i]= 256-c->one_state[i];
}
}
p->reference= 0;
if(avctx->get_buffer(avctx, p) < 0){
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
if(avctx->debug&FF_DEBUG_PICT_INFO)
av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac);
if(!f->ac){
bytes_read = c->bytestream - c->bytestream_start - 1;
if(bytes_read ==0) av_log(avctx, AV_LOG_ERROR, "error at end of AC stream\n"); //FIXME
//printf("pos=%d\n", bytes_read);
init_get_bits(&f->slice_context[0]->gb, buf + bytes_read, buf_size - bytes_read);
} else {
bytes_read = 0; /* avoid warning */
}
buf_p= buf + buf_size;
for(i=f->slice_count-1; i>0; i--){
FFV1Context *fs= f->slice_context[i];
int v= AV_RB24(buf_p-3)+3;
if(buf_p - buf <= v){
av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
return -1;
}
buf_p -= v;
if(fs->ac){
ff_init_range_decoder(&fs->c, buf_p, v);
}else{
init_get_bits(&fs->gb, buf_p, v);
}
}
avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
f->picture_number++;
*picture= *p;
*data_size = sizeof(AVFrame);
return buf_size;
}
AVCodec ff_ffv1_decoder = {
"ffv1",
AVMEDIA_TYPE_VIDEO,
CODEC_ID_FFV1,
sizeof(FFV1Context),
decode_init,
NULL,
common_end,
decode_frame,
CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ | CODEC_CAP_SLICE_THREADS,
NULL,
.long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
};
#if CONFIG_FFV1_ENCODER
AVCodec ff_ffv1_encoder = {
"ffv1",
AVMEDIA_TYPE_VIDEO,
CODEC_ID_FFV1,
sizeof(FFV1Context),
encode_init,
encode_frame,
common_end,
.capabilities = CODEC_CAP_SLICE_THREADS,
.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_RGB32, PIX_FMT_YUV420P16, PIX_FMT_YUV422P16, PIX_FMT_YUV444P16, PIX_FMT_YUV420P9, PIX_FMT_YUV420P10, PIX_FMT_YUV422P10, PIX_FMT_NONE},
.long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
};
#endif
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