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Split parts of dvdata.h into dvdata.c, this ensures that things like

Browse Source 
work_chunks_* and dv_idct_factor_* variables appear only once in the binary
instead of 3 times.
Saves 3264 bytes in .rodata and 312416 bytes in .bss on x86_64.

Originally committed as revision 20246 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-10-16 07:55:57 +00:00
parent 046c400103
commit c76911bd65
6 changed files with 298 additions and 263 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
libavcodec/Makefile
View File

@ -75,8 +75,8 @@ OBJS-$(CONFIG_DVBSUB_DECODER) += dvbsubdec.o
OBJS-$(CONFIG_DVBSUB_ENCODER) += dvbsub.o
OBJS-$(CONFIG_DVDSUB_DECODER) += dvdsubdec.o
OBJS-$(CONFIG_DVDSUB_ENCODER) += dvdsubenc.o
OBJS-$(CONFIG_DVVIDEO_DECODER) += dv.o
OBJS-$(CONFIG_DVVIDEO_ENCODER) += dv.o
OBJS-$(CONFIG_DVVIDEO_DECODER) += dv.o dvdata.o
OBJS-$(CONFIG_DVVIDEO_ENCODER) += dv.o dvdata.o
OBJS-$(CONFIG_DXA_DECODER) += dxa.o
OBJS-$(CONFIG_EAC3_DECODER) += eac3dec.o eac3dec_data.o
OBJS-$(CONFIG_EACMV_DECODER) += eacmv.o
@ -362,6 +362,8 @@ OBJS-$(CONFIG_ADPCM_YAMAHA_ENCODER) += adpcm.o
# libavformat dependencies
OBJS-$(CONFIG_ADTS_MUXER) += mpeg4audio.o
OBJS-$(CONFIG_DV_DEMUXER) += dvdata.o
OBJS-$(CONFIG_DV_MUXER) += dvdata.o
OBJS-$(CONFIG_EAC3_DEMUXER) += ac3_parser.o ac3tab.o aac_ac3_parser.o
OBJS-$(CONFIG_FLAC_DEMUXER) += flacdec.o flacdata.o flac.o
OBJS-$(CONFIG_FLAC_MUXER) += flacdec.o flacdata.o flac.o

4
libavcodec/dv.c
View File

@ -1128,7 +1128,7 @@ static int dvvideo_decode_frame(AVCodecContext *avctx,
int buf_size = avpkt->size;
DVVideoContext *s = avctx->priv_data;
s->sys = dv_frame_profile(s->sys, buf, buf_size);
s->sys = ff_dv_frame_profile(s->sys, buf, buf_size);
if (!s->sys || buf_size < s->sys->frame_size || dv_init_dynamic_tables(s->sys)) {
av_log(avctx, AV_LOG_ERROR, "could not find dv frame profile\n");
return -1; /* NOTE: we only accept several full frames */
@ -1293,7 +1293,7 @@ static int dvvideo_encode_frame(AVCodecContext *c, uint8_t *buf, int buf_size,
{
DVVideoContext *s = c->priv_data;
s->sys = dv_codec_profile(c);
s->sys = ff_dv_codec_profile(c);
if (!s->sys || buf_size < s->sys->frame_size || dv_init_dynamic_tables(s->sys))
return -1;

285
libavcodec/dvdata.c Normal file
View File

@ -0,0 +1,285 @@
/*
* Constants for DV codec
* Copyright (c) 2002 Fabrice Bellard
*
* 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 libavcodec/dvdata.c
* Constants for DV codec.
*/
#include "libavutil/rational.h"
#include "avcodec.h"
#include "dvdata.h"
static DVwork_chunk work_chunks_dv25pal [1*12*27];
static DVwork_chunk work_chunks_dv25pal411[1*12*27];
static DVwork_chunk work_chunks_dv25ntsc [1*10*27];
static DVwork_chunk work_chunks_dv50pal [2*12*27];
static DVwork_chunk work_chunks_dv50ntsc [2*10*27];
static DVwork_chunk work_chunks_dv100palp [2*12*27];
static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
static DVwork_chunk work_chunks_dv100pali [4*12*27];
static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
static uint32_t dv_idct_factor_sd [2*2*22*64];
static uint32_t dv_idct_factor_hd1080[2*4*16*64];
static uint32_t dv_idct_factor_hd720 [2*4*16*64];
static const DVprofile dv_profiles[] = {
{ .dsf = 0,
.video_stype = 0x0,
.frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
.difseg_size = 10,
.n_difchan = 1,
.time_base = { 1001, 30000 },
.ltc_divisor = 30,
.height = 480,
.width = 720,
.sar = {{10, 11}, {40, 33}},
.work_chunks = &work_chunks_dv25ntsc[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV411P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x0,
.frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
.difseg_size = 12,
.n_difchan = 1,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{59, 54}, {118, 81}},
.work_chunks = &work_chunks_dv25pal[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV420P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 1,
.video_stype = 0x0,
.frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
.difseg_size = 12,
.n_difchan = 1,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{59, 54}, {118, 81}},
.work_chunks = &work_chunks_dv25pal411[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV411P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 0,
.video_stype = 0x4,
.frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
.difseg_size = 10, /* also known as "DVCPRO50" */
.n_difchan = 2,
.time_base = { 1001, 30000 },
.ltc_divisor = 30,
.height = 480,
.width = 720,
.sar = {{10, 11}, {40, 33}},
.work_chunks = &work_chunks_dv50ntsc[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x4,
.frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
.difseg_size = 12, /* also known as "DVCPRO50" */
.n_difchan = 2,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{59, 54}, {118, 81}},
.work_chunks = &work_chunks_dv50pal[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 0,
.video_stype = 0x14,
.frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
.difseg_size = 10, /* also known as "DVCPRO HD" */
.n_difchan = 4,
.time_base = { 1001, 30000 },
.ltc_divisor = 30,
.height = 1080,
.width = 1280,
.sar = {{1, 1}, {1, 1}},
.work_chunks = &work_chunks_dv100ntsci[0],
.idct_factor = &dv_idct_factor_hd1080[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x14,
.frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
.difseg_size = 12, /* also known as "DVCPRO HD" */
.n_difchan = 4,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 1080,
.width = 1440,
.sar = {{1, 1}, {1, 1}},
.work_chunks = &work_chunks_dv100pali[0],
.idct_factor = &dv_idct_factor_hd1080[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 0,
.video_stype = 0x18,
.frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
.difseg_size = 10, /* also known as "DVCPRO HD" */
.n_difchan = 2,
.time_base = { 1001, 60000 },
.ltc_divisor = 60,
.height = 720,
.width = 960,
.sar = {{1, 1}, {1, 1}},
.work_chunks = &work_chunks_dv100ntscp[0],
.idct_factor = &dv_idct_factor_hd720[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x18,
.frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
.difseg_size = 12, /* also known as "DVCPRO HD" */
.n_difchan = 2,
.time_base = { 1, 50 },
.ltc_divisor = 50,
.height = 720,
.width = 960,
.sar = {{1, 1}, {1, 1}},
.work_chunks = &work_chunks_dv100palp[0],
.idct_factor = &dv_idct_factor_hd720[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 90,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 1,
.video_stype = 0x1,
.frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
.difseg_size = 12,
.n_difchan = 1,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{59, 54}, {118, 81}},
.work_chunks = &work_chunks_dv25pal[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV420P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
}
};
const DVprofile* ff_dv_frame_profile(const DVprofile *sys,
const uint8_t* frame, unsigned buf_size)
{
int i;
int dsf = (frame[3] & 0x80) >> 7;
int stype = frame[80*5 + 48 + 3] & 0x1f;
/* 576i50 25Mbps 4:1:1 is a special case */
if (dsf == 1 && stype == 0 && frame[5] & 0x07) {
return &dv_profiles[2];
}
for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
return &dv_profiles[i];
/* check if old sys matches and assumes corrupted input */
if (sys && buf_size == sys->frame_size)
return sys;
return NULL;
}
const DVprofile* ff_dv_codec_profile(AVCodecContext* codec)
{
int i;
for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
if (codec->height == dv_profiles[i].height &&
codec->pix_fmt == dv_profiles[i].pix_fmt &&
codec->width == dv_profiles[i].width)
return &dv_profiles[i];
return NULL;
}

258
libavcodec/dvdata.h
View File

@ -460,223 +460,6 @@ static const uint8_t block_sizes_dv100[8] = {
80, 80, 80, 80, 80, 80, 64, 64,
};
static DVwork_chunk work_chunks_dv25pal [1*12*27];
static DVwork_chunk work_chunks_dv25pal411[1*12*27];
static DVwork_chunk work_chunks_dv25ntsc [1*10*27];
static DVwork_chunk work_chunks_dv50pal [2*12*27];
static DVwork_chunk work_chunks_dv50ntsc [2*10*27];
static DVwork_chunk work_chunks_dv100palp [2*12*27];
static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
static DVwork_chunk work_chunks_dv100pali [4*12*27];
static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
static uint32_t dv_idct_factor_sd [2*2*22*64];
static uint32_t dv_idct_factor_hd1080[2*4*16*64];
static uint32_t dv_idct_factor_hd720 [2*4*16*64];
static const DVprofile dv_profiles[] = {
{ .dsf = 0,
.video_stype = 0x0,
.frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
.difseg_size = 10,
.n_difchan = 1,
.time_base = { 1001, 30000 },
.ltc_divisor = 30,
.height = 480,
.width = 720,
.sar = {{10, 11}, {40, 33}},
.work_chunks = &work_chunks_dv25ntsc[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV411P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x0,
.frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
.difseg_size = 12,
.n_difchan = 1,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{59, 54}, {118, 81}},
.work_chunks = &work_chunks_dv25pal[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV420P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 1,
.video_stype = 0x0,
.frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
.difseg_size = 12,
.n_difchan = 1,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{59, 54}, {118, 81}},
.work_chunks = &work_chunks_dv25pal411[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV411P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 0,
.video_stype = 0x4,
.frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
.difseg_size = 10, /* also known as "DVCPRO50" */
.n_difchan = 2,
.time_base = { 1001, 30000 },
.ltc_divisor = 30,
.height = 480,
.width = 720,
.sar = {{10, 11}, {40, 33}},
.work_chunks = &work_chunks_dv50ntsc[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x4,
.frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
.difseg_size = 12, /* also known as "DVCPRO50" */
.n_difchan = 2,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{59, 54}, {118, 81}},
.work_chunks = &work_chunks_dv50pal[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 0,
.video_stype = 0x14,
.frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
.difseg_size = 10, /* also known as "DVCPRO HD" */
.n_difchan = 4,
.time_base = { 1001, 30000 },
.ltc_divisor = 30,
.height = 1080,
.width = 1280,
.sar = {{1, 1}, {1, 1}},
.work_chunks = &work_chunks_dv100ntsci[0],
.idct_factor = &dv_idct_factor_hd1080[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x14,
.frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
.difseg_size = 12, /* also known as "DVCPRO HD" */
.n_difchan = 4,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 1080,
.width = 1440,
.sar = {{1, 1}, {1, 1}},
.work_chunks = &work_chunks_dv100pali[0],
.idct_factor = &dv_idct_factor_hd1080[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 0,
.video_stype = 0x18,
.frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
.difseg_size = 10, /* also known as "DVCPRO HD" */
.n_difchan = 2,
.time_base = { 1001, 60000 },
.ltc_divisor = 60,
.height = 720,
.width = 960,
.sar = {{1, 1}, {1, 1}},
.work_chunks = &work_chunks_dv100ntscp[0],
.idct_factor = &dv_idct_factor_hd720[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x18,
.frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
.difseg_size = 12, /* also known as "DVCPRO HD" */
.n_difchan = 2,
.time_base = { 1, 50 },
.ltc_divisor = 50,
.height = 720,
.width = 960,
.sar = {{1, 1}, {1, 1}},
.work_chunks = &work_chunks_dv100palp[0],
.idct_factor = &dv_idct_factor_hd720[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 90,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 1,
.video_stype = 0x1,
.frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
.difseg_size = 12,
.n_difchan = 1,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{59, 54}, {118, 81}},
.work_chunks = &work_chunks_dv25pal[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV420P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
}
};
enum dv_section_type {
dv_sect_header = 0x1f,
dv_sect_subcode = 0x3f,
@ -718,44 +501,9 @@ enum dv_pack_type {
*/
#define DV_MAX_BPM 8
static inline
const DVprofile* dv_frame_profile(const DVprofile *sys,
const uint8_t* frame, unsigned buf_size)
{
int i;
int dsf = (frame[3] & 0x80) >> 7;
int stype = frame[80*5 + 48 + 3] & 0x1f;
/* 576i50 25Mbps 4:1:1 is a special case */
if (dsf == 1 && stype == 0 && frame[5] & 0x07) {
return &dv_profiles[2];
}
for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
return &dv_profiles[i];
/* check if old sys matches and assumes corrupted input */
if (sys && buf_size == sys->frame_size)
return sys;
return NULL;
}
static const DVprofile* dv_codec_profile(AVCodecContext* codec)
{
int i;
for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
if (codec->height == dv_profiles[i].height &&
codec->pix_fmt == dv_profiles[i].pix_fmt &&
codec->width == dv_profiles[i].width)
return &dv_profiles[i];
return NULL;
}
const DVprofile* ff_dv_frame_profile(const DVprofile *sys,
const uint8_t* frame, unsigned buf_size);
const DVprofile* ff_dv_codec_profile(AVCodecContext* codec);
static inline int dv_write_dif_id(enum dv_section_type t, uint8_t chan_num,
uint8_t seq_num, uint8_t dif_num,

6
libavformat/dv.c
View File

@ -322,7 +322,7 @@ int dv_produce_packet(DVDemuxContext *c, AVPacket *pkt,
uint8_t *ppcm[4] = {0};
if (buf_size < DV_PROFILE_BYTES ||
!(c->sys = dv_frame_profile(c->sys, buf, buf_size)) ||
!(c->sys = ff_dv_frame_profile(c->sys, buf, buf_size)) ||
buf_size < c->sys->frame_size) {
return -1; /* Broken frame, or not enough data */
}
@ -368,7 +368,7 @@ static int64_t dv_frame_offset(AVFormatContext *s, DVDemuxContext *c,
int64_t timestamp, int flags)
{
// FIXME: sys may be wrong if last dv_read_packet() failed (buffer is junk)
const DVprofile* sys = dv_codec_profile(c->vst->codec);
const DVprofile* sys = ff_dv_codec_profile(c->vst->codec);
int64_t offset;
int64_t size = url_fsize(s->pb);
int64_t max_offset = ((size-1) / sys->frame_size) * sys->frame_size;
@ -431,7 +431,7 @@ static int dv_read_header(AVFormatContext *s,
url_fseek(s->pb, -DV_PROFILE_BYTES, SEEK_CUR) < 0)
return AVERROR(EIO);
c->dv_demux->sys = dv_frame_profile(c->dv_demux->sys, c->buf, DV_PROFILE_BYTES);
c->dv_demux->sys = ff_dv_frame_profile(c->dv_demux->sys, c->buf, DV_PROFILE_BYTES);
if (!c->dv_demux->sys) {
av_log(s, AV_LOG_ERROR, "Can't determine profile of DV input stream.\n");
return -1;

2
libavformat/dvenc.c
View File

@ -321,7 +321,7 @@ DVMuxContext* dv_init_mux(AVFormatContext* s)
c->ast[i]->codec->channels != 2))
goto bail_out;
}
c->sys = dv_codec_profile(vst->codec);
c->sys = ff_dv_codec_profile(vst->codec);
if (!c->sys)
goto bail_out;