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/*
* 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
*/
/** |
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* @file |
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* Constants for DV codec.
*/
#include "libavutil/rational.h" |
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#include "libavutil/intreadwrite.h" |
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#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, |
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.sar = {{8, 9}, {32, 27}}, |
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.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, |
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.sar = {{16, 15}, {64, 45}}, |
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.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, |
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.sar = {{16, 15}, {64, 45}}, |
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.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, |
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.sar = {{8, 9}, {32, 27}}, |
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.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, |
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.sar = {{16, 15}, {64, 45}}, |
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.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, |
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.sar = {{1, 1}, {3, 2}}, |
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.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, |
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.sar = {{1, 1}, {4, 3}}, |
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.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, |
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.sar = {{1, 1}, {4, 3}}, |
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.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, |
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.sar = {{1, 1}, {4, 3}}, |
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.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, |
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.sar = {{16, 15}, {64, 45}}, |
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.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,
}
};
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const DVprofile* avpriv_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys, |
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const uint8_t* frame, unsigned buf_size)
{ |
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int i, dsf, stype; |
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if(buf_size < DV_PROFILE_BYTES)
return NULL; |
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|
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dsf = (frame[3] & 0x80) >> 7;
stype = frame[80*5 + 48 + 3] & 0x1f; |
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/* 576i50 25Mbps 4:1:1 is a special case */ |
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if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) { |
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return &dv_profiles[2];
}
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if(codec && codec->codec_tag==AV_RL32("dvsd") && codec->width==720 && codec->height==576)
return &dv_profiles[1];
|
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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;
}
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const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys, |
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const uint8_t* frame, unsigned buf_size)
{ |
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return avpriv_dv_frame_profile2(NULL, sys, frame, buf_size); |
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}
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const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec) |
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{
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;
}
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