/* * 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 * 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}, {3, 2}},      .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}, {4, 3}},      .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}, {4, 3}},      .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}, {4, 3}},      .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;}