FFmpeg: libavcodec/dv_profile.c Source File

00001 /*
00002  * This file is part of Libav.
00003  *
00004  * Libav is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Lesser General Public
00006  * License as published by the Free Software Foundation; either
00007  * version 2.1 of the License, or (at your option) any later version.
00008  *
00009  * Libav is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * Lesser General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public
00015  * License along with Libav; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00017  */
00018 
00019 #include <stdint.h>
00020 
00021 #include "libavutil/common.h"
00022 #include "libavutil/intreadwrite.h"
00023 #include "libavutil/log.h"
00024 #include "libavutil/pixdesc.h"
00025 #include "avcodec.h"
00026 #include "dv_profile.h"
00027 
00028 static DVwork_chunk work_chunks_dv25pal   [1*12*27];
00029 static DVwork_chunk work_chunks_dv25pal411[1*12*27];
00030 static DVwork_chunk work_chunks_dv25ntsc  [1*10*27];
00031 static DVwork_chunk work_chunks_dv50pal   [2*12*27];
00032 static DVwork_chunk work_chunks_dv50ntsc  [2*10*27];
00033 static DVwork_chunk work_chunks_dv100palp [2*12*27];
00034 static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
00035 static DVwork_chunk work_chunks_dv100pali [4*12*27];
00036 static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
00037 
00038 static uint32_t dv_idct_factor_sd    [2*2*22*64];
00039 static uint32_t dv_idct_factor_hd1080[2*4*16*64];
00040 static uint32_t dv_idct_factor_hd720 [2*4*16*64];
00041 
00042 static const uint8_t dv_audio_shuffle525[10][9] = {
00043   {  0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
00044   {  6, 36, 66, 26, 56, 86, 16, 46, 76 },
00045   { 12, 42, 72,  2, 32, 62, 22, 52, 82 },
00046   { 18, 48, 78,  8, 38, 68, 28, 58, 88 },
00047   { 24, 54, 84, 14, 44, 74,  4, 34, 64 },
00048 
00049   {  1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
00050   {  7, 37, 67, 27, 57, 87, 17, 47, 77 },
00051   { 13, 43, 73,  3, 33, 63, 23, 53, 83 },
00052   { 19, 49, 79,  9, 39, 69, 29, 59, 89 },
00053   { 25, 55, 85, 15, 45, 75,  5, 35, 65 },
00054 };
00055 
00056 static const uint8_t dv_audio_shuffle625[12][9] = {
00057   {   0,  36,  72,  26,  62,  98,  16,  52,  88}, /* 1st channel */
00058   {   6,  42,  78,  32,  68, 104,  22,  58,  94},
00059   {  12,  48,  84,   2,  38,  74,  28,  64, 100},
00060   {  18,  54,  90,   8,  44,  80,  34,  70, 106},
00061   {  24,  60,  96,  14,  50,  86,   4,  40,  76},
00062   {  30,  66, 102,  20,  56,  92,  10,  46,  82},
00063 
00064   {   1,  37,  73,  27,  63,  99,  17,  53,  89}, /* 2nd channel */
00065   {   7,  43,  79,  33,  69, 105,  23,  59,  95},
00066   {  13,  49,  85,   3,  39,  75,  29,  65, 101},
00067   {  19,  55,  91,   9,  45,  81,  35,  71, 107},
00068   {  25,  61,  97,  15,  51,  87,   5,  41,  77},
00069   {  31,  67, 103,  21,  57,  93,  11,  47,  83},
00070 };
00071 
00072 /* macroblock bit budgets */
00073 static const uint8_t block_sizes_dv2550[8] = {
00074     112, 112, 112, 112, 80, 80, 0, 0,
00075 };
00076 
00077 static const uint8_t block_sizes_dv100[8] = {
00078     80, 80, 80, 80, 80, 80, 64, 64,
00079 };
00080 
00081 static const DVprofile dv_profiles[] = {
00082     { .dsf = 0,
00083       .video_stype = 0x0,
00084       .frame_size = 120000,        /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
00085       .difseg_size = 10,
00086       .n_difchan = 1,
00087       .time_base = { 1001, 30000 },
00088       .ltc_divisor = 30,
00089       .height = 480,
00090       .width = 720,
00091       .sar = {{8, 9}, {32, 27}},
00092       .work_chunks = &work_chunks_dv25ntsc[0],
00093       .idct_factor = &dv_idct_factor_sd[0],
00094       .pix_fmt = PIX_FMT_YUV411P,
00095       .bpm = 6,
00096       .block_sizes = block_sizes_dv2550,
00097       .audio_stride = 90,
00098       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
00099       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
00100       .audio_shuffle = dv_audio_shuffle525,
00101     },
00102     { .dsf = 1,
00103       .video_stype = 0x0,
00104       .frame_size = 144000,        /* IEC 61834 - 625/50 (PAL) */
00105       .difseg_size = 12,
00106       .n_difchan = 1,
00107       .time_base = { 1, 25 },
00108       .ltc_divisor = 25,
00109       .height = 576,
00110       .width = 720,
00111       .sar = {{16, 15}, {64, 45}},
00112       .work_chunks = &work_chunks_dv25pal[0],
00113       .idct_factor = &dv_idct_factor_sd[0],
00114       .pix_fmt = PIX_FMT_YUV420P,
00115       .bpm = 6,
00116       .block_sizes = block_sizes_dv2550,
00117       .audio_stride = 108,
00118       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
00119       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
00120       .audio_shuffle = dv_audio_shuffle625,
00121     },
00122     { .dsf = 1,
00123       .video_stype = 0x0,
00124       .frame_size = 144000,        /* SMPTE-314M - 625/50 (PAL) */
00125       .difseg_size = 12,
00126       .n_difchan = 1,
00127       .time_base = { 1, 25 },
00128       .ltc_divisor = 25,
00129       .height = 576,
00130       .width = 720,
00131       .sar = {{16, 15}, {64, 45}},
00132       .work_chunks = &work_chunks_dv25pal411[0],
00133       .idct_factor = &dv_idct_factor_sd[0],
00134       .pix_fmt = PIX_FMT_YUV411P,
00135       .bpm = 6,
00136       .block_sizes = block_sizes_dv2550,
00137       .audio_stride = 108,
00138       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
00139       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
00140       .audio_shuffle = dv_audio_shuffle625,
00141     },
00142     { .dsf = 0,
00143       .video_stype = 0x4,
00144       .frame_size = 240000,        /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
00145       .difseg_size = 10,           /* also known as "DVCPRO50" */
00146       .n_difchan = 2,
00147       .time_base = { 1001, 30000 },
00148       .ltc_divisor = 30,
00149       .height = 480,
00150       .width = 720,
00151       .sar = {{8, 9}, {32, 27}},
00152       .work_chunks = &work_chunks_dv50ntsc[0],
00153       .idct_factor = &dv_idct_factor_sd[0],
00154       .pix_fmt = PIX_FMT_YUV422P,
00155       .bpm = 6,
00156       .block_sizes = block_sizes_dv2550,
00157       .audio_stride = 90,
00158       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
00159       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
00160       .audio_shuffle = dv_audio_shuffle525,
00161     },
00162     { .dsf = 1,
00163       .video_stype = 0x4,
00164       .frame_size = 288000,        /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
00165       .difseg_size = 12,           /* also known as "DVCPRO50" */
00166       .n_difchan = 2,
00167       .time_base = { 1, 25 },
00168       .ltc_divisor = 25,
00169       .height = 576,
00170       .width = 720,
00171       .sar = {{16, 15}, {64, 45}},
00172       .work_chunks = &work_chunks_dv50pal[0],
00173       .idct_factor = &dv_idct_factor_sd[0],
00174       .pix_fmt = PIX_FMT_YUV422P,
00175       .bpm = 6,
00176       .block_sizes = block_sizes_dv2550,
00177       .audio_stride = 108,
00178       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
00179       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
00180       .audio_shuffle = dv_audio_shuffle625,
00181     },
00182     { .dsf = 0,
00183       .video_stype = 0x14,
00184       .frame_size = 480000,        /* SMPTE-370M - 1080i60 100 Mbps */
00185       .difseg_size = 10,           /* also known as "DVCPRO HD" */
00186       .n_difchan = 4,
00187       .time_base = { 1001, 30000 },
00188       .ltc_divisor = 30,
00189       .height = 1080,
00190       .width = 1280,
00191       .sar = {{1, 1}, {3, 2}},
00192       .work_chunks = &work_chunks_dv100ntsci[0],
00193       .idct_factor = &dv_idct_factor_hd1080[0],
00194       .pix_fmt = PIX_FMT_YUV422P,
00195       .bpm = 8,
00196       .block_sizes = block_sizes_dv100,
00197       .audio_stride = 90,
00198       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
00199       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
00200       .audio_shuffle = dv_audio_shuffle525,
00201     },
00202     { .dsf = 1,
00203       .video_stype = 0x14,
00204       .frame_size = 576000,        /* SMPTE-370M - 1080i50 100 Mbps */
00205       .difseg_size = 12,           /* also known as "DVCPRO HD" */
00206       .n_difchan = 4,
00207       .time_base = { 1, 25 },
00208       .ltc_divisor = 25,
00209       .height = 1080,
00210       .width = 1440,
00211       .sar = {{1, 1}, {4, 3}},
00212       .work_chunks = &work_chunks_dv100pali[0],
00213       .idct_factor = &dv_idct_factor_hd1080[0],
00214       .pix_fmt = PIX_FMT_YUV422P,
00215       .bpm = 8,
00216       .block_sizes = block_sizes_dv100,
00217       .audio_stride = 108,
00218       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
00219       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
00220       .audio_shuffle = dv_audio_shuffle625,
00221     },
00222     { .dsf = 0,
00223       .video_stype = 0x18,
00224       .frame_size = 240000,        /* SMPTE-370M - 720p60 100 Mbps */
00225       .difseg_size = 10,           /* also known as "DVCPRO HD" */
00226       .n_difchan = 2,
00227       .time_base = { 1001, 60000 },
00228       .ltc_divisor = 60,
00229       .height = 720,
00230       .width = 960,
00231       .sar = {{1, 1}, {4, 3}},
00232       .work_chunks = &work_chunks_dv100ntscp[0],
00233       .idct_factor = &dv_idct_factor_hd720[0],
00234       .pix_fmt = PIX_FMT_YUV422P,
00235       .bpm = 8,
00236       .block_sizes = block_sizes_dv100,
00237       .audio_stride = 90,
00238       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
00239       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
00240       .audio_shuffle = dv_audio_shuffle525,
00241     },
00242     { .dsf = 1,
00243       .video_stype = 0x18,
00244       .frame_size = 288000,        /* SMPTE-370M - 720p50 100 Mbps */
00245       .difseg_size = 12,           /* also known as "DVCPRO HD" */
00246       .n_difchan = 2,
00247       .time_base = { 1, 50 },
00248       .ltc_divisor = 50,
00249       .height = 720,
00250       .width = 960,
00251       .sar = {{1, 1}, {4, 3}},
00252       .work_chunks = &work_chunks_dv100palp[0],
00253       .idct_factor = &dv_idct_factor_hd720[0],
00254       .pix_fmt = PIX_FMT_YUV422P,
00255       .bpm = 8,
00256       .block_sizes = block_sizes_dv100,
00257       .audio_stride = 90,
00258       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
00259       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
00260       .audio_shuffle = dv_audio_shuffle625,
00261     },
00262     { .dsf = 1,
00263       .video_stype = 0x1,
00264       .frame_size = 144000,        /* IEC 61883-5 - 625/50 (PAL) */
00265       .difseg_size = 12,
00266       .n_difchan = 1,
00267       .time_base = { 1, 25 },
00268       .ltc_divisor = 25,
00269       .height = 576,
00270       .width = 720,
00271       .sar = {{16, 15}, {64, 45}},
00272       .work_chunks = &work_chunks_dv25pal[0],
00273       .idct_factor = &dv_idct_factor_sd[0],
00274       .pix_fmt = PIX_FMT_YUV420P,
00275       .bpm = 6,
00276       .block_sizes = block_sizes_dv2550,
00277       .audio_stride = 108,
00278       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
00279       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
00280       .audio_shuffle = dv_audio_shuffle625,
00281     }
00282 };
00283 
00284 const DVprofile* avpriv_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys,
00285                                   const uint8_t* frame, unsigned buf_size)
00286 {
00287     int i, dsf, stype;
00288 
00289     if(buf_size < DV_PROFILE_BYTES)
00290         return NULL;
00291 
00292     dsf = (frame[3] & 0x80) >> 7;
00293     stype = frame[80 * 5 + 48 + 3] & 0x1f;
00294 
00295     /* 576i50 25Mbps 4:1:1 is a special case */
00296     if ((dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) ||
00297         (stype == 31 && codec && codec->codec_tag==AV_RL32("SL25") && codec->coded_width==720 && codec->coded_height==576)) {
00298         return &dv_profiles[2];
00299     }
00300 
00301     if(stype == 0 && codec && codec->codec_tag==AV_RL32("dvsd") && codec->coded_width==720 && codec->coded_height==576)
00302         return &dv_profiles[1];
00303 
00304     for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
00305         if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
00306             return &dv_profiles[i];
00307 
00308     /* check if old sys matches and assumes corrupted input */
00309     if (sys && buf_size == sys->frame_size)
00310         return sys;
00311 
00312     /* hack for trac issue #217, dv files created with QuickTime 3 */
00313     if ((frame[3] & 0x7f) == 0x3f && frame[80 * 5 + 48 + 3] == 0xff)
00314         return &dv_profiles[dsf];
00315 
00316     return NULL;
00317 }
00318 
00319 const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,
00320                                   const uint8_t* frame, unsigned buf_size)
00321 {
00322     return avpriv_dv_frame_profile2(NULL, sys, frame, buf_size);
00323 }
00324 
00325 const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec)
00326 {
00327     int i;
00328     int w, h;
00329 
00330     if (codec->coded_width || codec->coded_height) {
00331         w = codec->coded_width;
00332         h = codec->coded_height;
00333     } else {
00334         w = codec->width;
00335         h = codec->height;
00336     }
00337 
00338     for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
00339        if (h == dv_profiles[i].height  &&
00340            codec->pix_fmt == dv_profiles[i].pix_fmt &&
00341            w == dv_profiles[i].width)
00342                return &dv_profiles[i];
00343 
00344     return NULL;
00345 }
00346 
00347 void ff_dv_print_profiles(void *logctx, int loglevel)
00348 {
00349     int i;
00350     for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
00351         const DVprofile *p = &dv_profiles[i];
00352         av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, "
00353                "framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
00354                p->time_base.den, p->time_base.num);
00355     }
00356 }