2002-10-03 23:07:39 +02:00
|
|
|
/*
|
|
|
|
* Constants for DV codec
|
2009-01-19 16:46:40 +01:00
|
|
|
* Copyright (c) 2002 Fabrice Bellard
|
2002-10-03 23:07:39 +02:00
|
|
|
*
|
2011-03-18 18:35:10 +01:00
|
|
|
* This file is part of Libav.
|
2006-10-07 17:30:46 +02:00
|
|
|
*
|
2011-03-18 18:35:10 +01:00
|
|
|
* Libav is free software; you can redistribute it and/or
|
2002-10-03 23:07:39 +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.
|
2002-10-03 23:07:39 +02:00
|
|
|
*
|
2011-03-18 18:35:10 +01:00
|
|
|
* Libav is distributed in the hope that it will be useful,
|
2002-10-03 23:07:39 +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
|
2011-03-18 18:35:10 +01:00
|
|
|
* License along with Libav; 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
|
2002-10-03 23:07:39 +02:00
|
|
|
*/
|
|
|
|
|
2003-03-06 12:32:04 +01:00
|
|
|
/**
|
2010-04-20 16:45:34 +02:00
|
|
|
* @file
|
2003-03-06 12:32:04 +01:00
|
|
|
* Constants for DV codec.
|
|
|
|
*/
|
2003-09-29 19:54:07 +02:00
|
|
|
|
2008-08-31 09:39:47 +02:00
|
|
|
#ifndef AVCODEC_DVDATA_H
|
|
|
|
#define AVCODEC_DVDATA_H
|
2007-06-17 02:01:30 +02:00
|
|
|
|
2008-05-09 13:56:36 +02:00
|
|
|
#include "libavutil/rational.h"
|
2007-06-17 00:59:13 +02:00
|
|
|
#include "avcodec.h"
|
2012-03-18 19:01:45 +01:00
|
|
|
#include "dsputil.h"
|
|
|
|
#include "get_bits.h"
|
2007-06-17 00:59:13 +02:00
|
|
|
|
2008-11-12 22:13:28 +01:00
|
|
|
typedef struct DVwork_chunk {
|
|
|
|
uint16_t buf_offset;
|
|
|
|
uint16_t mb_coordinates[5];
|
|
|
|
} DVwork_chunk;
|
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
/*
|
|
|
|
* DVprofile is used to express the differences between various
|
2003-09-29 19:54:07 +02:00
|
|
|
* DV flavors. For now it's primarily used for differentiating
|
|
|
|
* 525/60 and 625/50, but the plans are to use it for various
|
|
|
|
* DV specs as well (e.g. SMPTE314M vs. IEC 61834).
|
|
|
|
*/
|
|
|
|
typedef struct DVprofile {
|
2008-10-24 23:41:27 +02:00
|
|
|
int dsf; /* value of the dsf in the DV header */
|
|
|
|
int video_stype; /* stype for VAUX source pack */
|
|
|
|
int frame_size; /* total size of one frame in bytes */
|
|
|
|
int difseg_size; /* number of DIF segments per DIF channel */
|
|
|
|
int n_difchan; /* number of DIF channels per frame */
|
|
|
|
AVRational time_base; /* 1/framerate */
|
|
|
|
int ltc_divisor; /* FPS from the LTS standpoint */
|
|
|
|
int height; /* picture height in pixels */
|
|
|
|
int width; /* picture width in pixels */
|
|
|
|
AVRational sar[2]; /* sample aspect ratios for 4:3 and 16:9 */
|
2008-11-12 22:13:28 +01:00
|
|
|
DVwork_chunk *work_chunks; /* each thread gets its own chunk of frame to work on */
|
2008-11-20 02:40:40 +01:00
|
|
|
uint32_t *idct_factor; /* set of iDCT factor tables */
|
2008-10-24 23:41:27 +02:00
|
|
|
enum PixelFormat pix_fmt; /* picture pixel format */
|
|
|
|
int bpm; /* blocks per macroblock */
|
|
|
|
const uint8_t *block_sizes; /* AC block sizes, in bits */
|
|
|
|
int audio_stride; /* size of audio_shuffle table */
|
|
|
|
int audio_min_samples[3]; /* min amount of audio samples */
|
|
|
|
/* for 48kHz, 44.1kHz and 32kHz */
|
|
|
|
int audio_samples_dist[5]; /* how many samples are supposed to be */
|
|
|
|
/* in each frame in a 5 frames window */
|
|
|
|
const uint8_t (*audio_shuffle)[9]; /* PCM shuffling table */
|
2003-09-29 19:54:07 +02:00
|
|
|
} DVprofile;
|
|
|
|
|
2012-03-18 19:01:45 +01:00
|
|
|
typedef struct DVVideoContext {
|
|
|
|
const DVprofile *sys;
|
|
|
|
AVFrame picture;
|
|
|
|
AVCodecContext *avctx;
|
|
|
|
uint8_t *buf;
|
|
|
|
|
|
|
|
uint8_t dv_zigzag[2][64];
|
|
|
|
|
|
|
|
void (*get_pixels)(DCTELEM *block, const uint8_t *pixels, int line_size);
|
|
|
|
void (*fdct[2])(DCTELEM *block);
|
|
|
|
void (*idct_put[2])(uint8_t *dest, int line_size, DCTELEM *block);
|
|
|
|
me_cmp_func ildct_cmp;
|
|
|
|
} DVVideoContext;
|
|
|
|
|
2006-09-04 05:33:11 +02:00
|
|
|
enum dv_section_type {
|
|
|
|
dv_sect_header = 0x1f,
|
|
|
|
dv_sect_subcode = 0x3f,
|
|
|
|
dv_sect_vaux = 0x56,
|
|
|
|
dv_sect_audio = 0x76,
|
|
|
|
dv_sect_video = 0x96,
|
|
|
|
};
|
|
|
|
|
|
|
|
enum dv_pack_type {
|
|
|
|
dv_header525 = 0x3f, /* see dv_write_pack for important details on */
|
|
|
|
dv_header625 = 0xbf, /* these two packs */
|
|
|
|
dv_timecode = 0x13,
|
|
|
|
dv_audio_source = 0x50,
|
|
|
|
dv_audio_control = 0x51,
|
|
|
|
dv_audio_recdate = 0x52,
|
|
|
|
dv_audio_rectime = 0x53,
|
|
|
|
dv_video_source = 0x60,
|
|
|
|
dv_video_control = 0x61,
|
|
|
|
dv_video_recdate = 0x62,
|
|
|
|
dv_video_rectime = 0x63,
|
|
|
|
dv_unknown_pack = 0xff,
|
|
|
|
};
|
|
|
|
|
2008-08-29 00:41:00 +02:00
|
|
|
#define DV_PROFILE_IS_HD(p) ((p)->video_stype & 0x10)
|
|
|
|
#define DV_PROFILE_IS_1080i50(p) (((p)->video_stype == 0x14) && ((p)->dsf == 1))
|
|
|
|
#define DV_PROFILE_IS_720p50(p) (((p)->video_stype == 0x18) && ((p)->dsf == 1))
|
|
|
|
|
2008-10-24 23:41:27 +02:00
|
|
|
/* minimum number of bytes to read from a DV stream in order to
|
|
|
|
determine the profile */
|
2006-03-06 09:54:33 +01:00
|
|
|
#define DV_PROFILE_BYTES (6*80) /* 6 DIF blocks */
|
|
|
|
|
2008-10-07 17:50:29 +02:00
|
|
|
/**
|
|
|
|
* largest possible DV frame, in bytes (1080i50)
|
|
|
|
*/
|
2008-08-29 00:41:00 +02:00
|
|
|
#define DV_MAX_FRAME_SIZE 576000
|
2006-03-06 09:54:33 +01:00
|
|
|
|
2008-10-07 17:50:29 +02:00
|
|
|
/**
|
|
|
|
* maximum number of blocks per macroblock in any DV format
|
|
|
|
*/
|
2008-08-19 18:00:26 +02:00
|
|
|
#define DV_MAX_BPM 8
|
|
|
|
|
2012-03-18 19:01:45 +01:00
|
|
|
#define TEX_VLC_BITS 9
|
|
|
|
|
|
|
|
extern RL_VLC_ELEM ff_dv_rl_vlc[1184];
|
|
|
|
|
2011-10-17 09:28:53 +02:00
|
|
|
const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,
|
|
|
|
const uint8_t* frame, unsigned buf_size);
|
|
|
|
const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec);
|
2006-09-04 05:33:11 +02:00
|
|
|
|
2012-03-18 19:01:45 +01:00
|
|
|
int ff_dv_init_dynamic_tables(const DVprofile *d);
|
|
|
|
int ff_dvvideo_init(AVCodecContext *avctx);
|
|
|
|
|
|
|
|
static inline int dv_work_pool_size(const DVprofile *d)
|
|
|
|
{
|
|
|
|
int size = d->n_difchan*d->difseg_size*27;
|
|
|
|
if (DV_PROFILE_IS_1080i50(d))
|
|
|
|
size -= 3*27;
|
|
|
|
if (DV_PROFILE_IS_720p50(d))
|
|
|
|
size -= 4*27;
|
|
|
|
return size;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void dv_calculate_mb_xy(DVVideoContext *s, DVwork_chunk *work_chunk, int m, int *mb_x, int *mb_y)
|
|
|
|
{
|
|
|
|
*mb_x = work_chunk->mb_coordinates[m] & 0xff;
|
|
|
|
*mb_y = work_chunk->mb_coordinates[m] >> 8;
|
|
|
|
|
|
|
|
/* We work with 720p frames split in half. The odd half-frame (chan==2,3) is displaced :-( */
|
|
|
|
if (s->sys->height == 720 && !(s->buf[1]&0x0C)) {
|
|
|
|
*mb_y -= (*mb_y>17)?18:-72; /* shifting the Y coordinate down by 72/2 macro blocks */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-08-31 09:39:47 +02:00
|
|
|
#endif /* AVCODEC_DVDATA_H */
|