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