libavcodec/dvdata.c

   1 /*
   2  * Constants for DV codec
   3  * Copyright (c) 2002 Fabrice Bellard
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file libavcodec/dvdata.c
  24  * Constants for DV codec.
  25  */
  26
  27 #include "libavutil/rational.h"
  28 #include "avcodec.h"
  29 #include "dvdata.h"
  30
  31 static DVwork_chunk work_chunks_dv25pal   [1*12*27];
  32 static DVwork_chunk work_chunks_dv25pal411[1*12*27];
  33 static DVwork_chunk work_chunks_dv25ntsc  [1*10*27];
  34 static DVwork_chunk work_chunks_dv50pal   [2*12*27];
  35 static DVwork_chunk work_chunks_dv50ntsc  [2*10*27];
  36 static DVwork_chunk work_chunks_dv100palp [2*12*27];
  37 static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
  38 static DVwork_chunk work_chunks_dv100pali [4*12*27];
  39 static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
  40
  41 static uint32_t dv_idct_factor_sd    [2*2*22*64];
  42 static uint32_t dv_idct_factor_hd1080[2*4*16*64];
  43 static uint32_t dv_idct_factor_hd720 [2*4*16*64];
  44
  45 static const DVprofile dv_profiles[] = {
  46     { .dsf = 0,
  47       .video_stype = 0x0,
  48       .frame_size = 120000,        /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
  49       .difseg_size = 10,
  50       .n_difchan = 1,
  51       .time_base = { 1001, 30000 },
  52       .ltc_divisor = 30,
  53       .height = 480,
  54       .width = 720,
  55       .sar = {{10, 11}, {40, 33}},
  56       .work_chunks = &work_chunks_dv25ntsc[0],
  57       .idct_factor = &dv_idct_factor_sd[0],
  58       .pix_fmt = PIX_FMT_YUV411P,
  59       .bpm = 6,
  60       .block_sizes = block_sizes_dv2550,
  61       .audio_stride = 90,
  62       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
  63       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
  64       .audio_shuffle = dv_audio_shuffle525,
  65     },
  66     { .dsf = 1,
  67       .video_stype = 0x0,
  68       .frame_size = 144000,        /* IEC 61834 - 625/50 (PAL) */
  69       .difseg_size = 12,
  70       .n_difchan = 1,
  71       .time_base = { 1, 25 },
  72       .ltc_divisor = 25,
  73       .height = 576,
  74       .width = 720,
  75       .sar = {{59, 54}, {118, 81}},
  76       .work_chunks = &work_chunks_dv25pal[0],
  77       .idct_factor = &dv_idct_factor_sd[0],
  78       .pix_fmt = PIX_FMT_YUV420P,
  79       .bpm = 6,
  80       .block_sizes = block_sizes_dv2550,
  81       .audio_stride = 108,
  82       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
  83       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
  84       .audio_shuffle = dv_audio_shuffle625,
  85     },
  86     { .dsf = 1,
  87       .video_stype = 0x0,
  88       .frame_size = 144000,        /* SMPTE-314M - 625/50 (PAL) */
  89       .difseg_size = 12,
  90       .n_difchan = 1,
  91       .time_base = { 1, 25 },
  92       .ltc_divisor = 25,
  93       .height = 576,
  94       .width = 720,
  95       .sar = {{59, 54}, {118, 81}},
  96       .work_chunks = &work_chunks_dv25pal411[0],
  97       .idct_factor = &dv_idct_factor_sd[0],
  98       .pix_fmt = PIX_FMT_YUV411P,
  99       .bpm = 6,
 100       .block_sizes = block_sizes_dv2550,
 101       .audio_stride = 108,
 102       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
 103       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
 104       .audio_shuffle = dv_audio_shuffle625,
 105     },
 106     { .dsf = 0,
 107       .video_stype = 0x4,
 108       .frame_size = 240000,        /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
 109       .difseg_size = 10,           /* also known as "DVCPRO50" */
 110       .n_difchan = 2,
 111       .time_base = { 1001, 30000 },
 112       .ltc_divisor = 30,
 113       .height = 480,
 114       .width = 720,
 115       .sar = {{10, 11}, {40, 33}},
 116       .work_chunks = &work_chunks_dv50ntsc[0],
 117       .idct_factor = &dv_idct_factor_sd[0],
 118       .pix_fmt = PIX_FMT_YUV422P,
 119       .bpm = 6,
 120       .block_sizes = block_sizes_dv2550,
 121       .audio_stride = 90,
 122       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
 123       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
 124       .audio_shuffle = dv_audio_shuffle525,
 125     },
 126     { .dsf = 1,
 127       .video_stype = 0x4,
 128       .frame_size = 288000,        /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
 129       .difseg_size = 12,           /* also known as "DVCPRO50" */
 130       .n_difchan = 2,
 131       .time_base = { 1, 25 },
 132       .ltc_divisor = 25,
 133       .height = 576,
 134       .width = 720,
 135       .sar = {{59, 54}, {118, 81}},
 136       .work_chunks = &work_chunks_dv50pal[0],
 137       .idct_factor = &dv_idct_factor_sd[0],
 138       .pix_fmt = PIX_FMT_YUV422P,
 139       .bpm = 6,
 140       .block_sizes = block_sizes_dv2550,
 141       .audio_stride = 108,
 142       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
 143       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
 144       .audio_shuffle = dv_audio_shuffle625,
 145     },
 146     { .dsf = 0,
 147       .video_stype = 0x14,
 148       .frame_size = 480000,        /* SMPTE-370M - 1080i60 100 Mbps */
 149       .difseg_size = 10,           /* also known as "DVCPRO HD" */
 150       .n_difchan = 4,
 151       .time_base = { 1001, 30000 },
 152       .ltc_divisor = 30,
 153       .height = 1080,
 154       .width = 1280,
 155       .sar = {{1, 1}, {3, 2}},
 156       .work_chunks = &work_chunks_dv100ntsci[0],
 157       .idct_factor = &dv_idct_factor_hd1080[0],
 158       .pix_fmt = PIX_FMT_YUV422P,
 159       .bpm = 8,
 160       .block_sizes = block_sizes_dv100,
 161       .audio_stride = 90,
 162       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
 163       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
 164       .audio_shuffle = dv_audio_shuffle525,
 165     },
 166     { .dsf = 1,
 167       .video_stype = 0x14,
 168       .frame_size = 576000,        /* SMPTE-370M - 1080i50 100 Mbps */
 169       .difseg_size = 12,           /* also known as "DVCPRO HD" */
 170       .n_difchan = 4,
 171       .time_base = { 1, 25 },
 172       .ltc_divisor = 25,
 173       .height = 1080,
 174       .width = 1440,
 175       .sar = {{1, 1}, {4, 3}},
 176       .work_chunks = &work_chunks_dv100pali[0],
 177       .idct_factor = &dv_idct_factor_hd1080[0],
 178       .pix_fmt = PIX_FMT_YUV422P,
 179       .bpm = 8,
 180       .block_sizes = block_sizes_dv100,
 181       .audio_stride = 108,
 182       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
 183       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
 184       .audio_shuffle = dv_audio_shuffle625,
 185     },
 186     { .dsf = 0,
 187       .video_stype = 0x18,
 188       .frame_size = 240000,        /* SMPTE-370M - 720p60 100 Mbps */
 189       .difseg_size = 10,           /* also known as "DVCPRO HD" */
 190       .n_difchan = 2,
 191       .time_base = { 1001, 60000 },
 192       .ltc_divisor = 60,
 193       .height = 720,
 194       .width = 960,
 195       .sar = {{1, 1}, {4, 3}},
 196       .work_chunks = &work_chunks_dv100ntscp[0],
 197       .idct_factor = &dv_idct_factor_hd720[0],
 198       .pix_fmt = PIX_FMT_YUV422P,
 199       .bpm = 8,
 200       .block_sizes = block_sizes_dv100,
 201       .audio_stride = 90,
 202       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
 203       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
 204       .audio_shuffle = dv_audio_shuffle525,
 205     },
 206     { .dsf = 1,
 207       .video_stype = 0x18,
 208       .frame_size = 288000,        /* SMPTE-370M - 720p50 100 Mbps */
 209       .difseg_size = 12,           /* also known as "DVCPRO HD" */
 210       .n_difchan = 2,
 211       .time_base = { 1, 50 },
 212       .ltc_divisor = 50,
 213       .height = 720,
 214       .width = 960,
 215       .sar = {{1, 1}, {4, 3}},
 216       .work_chunks = &work_chunks_dv100palp[0],
 217       .idct_factor = &dv_idct_factor_hd720[0],
 218       .pix_fmt = PIX_FMT_YUV422P,
 219       .bpm = 8,
 220       .block_sizes = block_sizes_dv100,
 221       .audio_stride = 90,
 222       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
 223       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
 224       .audio_shuffle = dv_audio_shuffle625,
 225     },
 226     { .dsf = 1,
 227       .video_stype = 0x1,
 228       .frame_size = 144000,        /* IEC 61883-5 - 625/50 (PAL) */
 229       .difseg_size = 12,
 230       .n_difchan = 1,
 231       .time_base = { 1, 25 },
 232       .ltc_divisor = 25,
 233       .height = 576,
 234       .width = 720,
 235       .sar = {{59, 54}, {118, 81}},
 236       .work_chunks = &work_chunks_dv25pal[0],
 237       .idct_factor = &dv_idct_factor_sd[0],
 238       .pix_fmt = PIX_FMT_YUV420P,
 239       .bpm = 6,
 240       .block_sizes = block_sizes_dv2550,
 241       .audio_stride = 108,
 242       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
 243       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
 244       .audio_shuffle = dv_audio_shuffle625,
 245     }
 246 };
 247
 248 const DVprofile* ff_dv_frame_profile(const DVprofile *sys,
 249                                   const uint8_t* frame, unsigned buf_size)
 250 {
 251    int i;
 252
 253    int dsf = (frame[3] & 0x80) >> 7;
 254
 255    int stype = frame[80*5 + 48 + 3] & 0x1f;
 256
 257    /* 576i50 25Mbps 4:1:1 is a special case */
 258    if (dsf == 1 && stype == 0 && frame[5] & 0x07) {
 259        return &dv_profiles[2];
 260    }
 261
 262    for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
 263        if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
 264            return &dv_profiles[i];
 265
 266    /* check if old sys matches and assumes corrupted input */
 267    if (sys && buf_size == sys->frame_size)
 268        return sys;
 269
 270    return NULL;
 271 }
 272
 273 const DVprofile* ff_dv_codec_profile(AVCodecContext* codec)
 274 {
 275     int i;
 276
 277     for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
 278        if (codec->height  == dv_profiles[i].height  &&
 279            codec->pix_fmt == dv_profiles[i].pix_fmt &&
 280            codec->width   == dv_profiles[i].width)
 281                return &dv_profiles[i];
 282
 283     return NULL;
 284 }
 285