Libav
|
00001 /* 00002 * Constants for DV codec 00003 * Copyright (c) 2002 Fabrice Bellard 00004 * 00005 * This file is part of FFmpeg. 00006 * 00007 * FFmpeg is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * FFmpeg is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with FFmpeg; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00027 #include "libavutil/rational.h" 00028 #include "avcodec.h" 00029 #include "dvdata.h" 00030 00031 static DVwork_chunk work_chunks_dv25pal [1*12*27]; 00032 static DVwork_chunk work_chunks_dv25pal411[1*12*27]; 00033 static DVwork_chunk work_chunks_dv25ntsc [1*10*27]; 00034 static DVwork_chunk work_chunks_dv50pal [2*12*27]; 00035 static DVwork_chunk work_chunks_dv50ntsc [2*10*27]; 00036 static DVwork_chunk work_chunks_dv100palp [2*12*27]; 00037 static DVwork_chunk work_chunks_dv100ntscp[2*10*27]; 00038 static DVwork_chunk work_chunks_dv100pali [4*12*27]; 00039 static DVwork_chunk work_chunks_dv100ntsci[4*10*27]; 00040 00041 static uint32_t dv_idct_factor_sd [2*2*22*64]; 00042 static uint32_t dv_idct_factor_hd1080[2*4*16*64]; 00043 static uint32_t dv_idct_factor_hd720 [2*4*16*64]; 00044 00045 static const DVprofile dv_profiles[] = { 00046 { .dsf = 0, 00047 .video_stype = 0x0, 00048 .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */ 00049 .difseg_size = 10, 00050 .n_difchan = 1, 00051 .time_base = { 1001, 30000 }, 00052 .ltc_divisor = 30, 00053 .height = 480, 00054 .width = 720, 00055 .sar = {{10, 11}, {40, 33}}, 00056 .work_chunks = &work_chunks_dv25ntsc[0], 00057 .idct_factor = &dv_idct_factor_sd[0], 00058 .pix_fmt = PIX_FMT_YUV411P, 00059 .bpm = 6, 00060 .block_sizes = block_sizes_dv2550, 00061 .audio_stride = 90, 00062 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ 00063 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ 00064 .audio_shuffle = dv_audio_shuffle525, 00065 }, 00066 { .dsf = 1, 00067 .video_stype = 0x0, 00068 .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */ 00069 .difseg_size = 12, 00070 .n_difchan = 1, 00071 .time_base = { 1, 25 }, 00072 .ltc_divisor = 25, 00073 .height = 576, 00074 .width = 720, 00075 .sar = {{59, 54}, {118, 81}}, 00076 .work_chunks = &work_chunks_dv25pal[0], 00077 .idct_factor = &dv_idct_factor_sd[0], 00078 .pix_fmt = PIX_FMT_YUV420P, 00079 .bpm = 6, 00080 .block_sizes = block_sizes_dv2550, 00081 .audio_stride = 108, 00082 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ 00083 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, 00084 .audio_shuffle = dv_audio_shuffle625, 00085 }, 00086 { .dsf = 1, 00087 .video_stype = 0x0, 00088 .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */ 00089 .difseg_size = 12, 00090 .n_difchan = 1, 00091 .time_base = { 1, 25 }, 00092 .ltc_divisor = 25, 00093 .height = 576, 00094 .width = 720, 00095 .sar = {{59, 54}, {118, 81}}, 00096 .work_chunks = &work_chunks_dv25pal411[0], 00097 .idct_factor = &dv_idct_factor_sd[0], 00098 .pix_fmt = PIX_FMT_YUV411P, 00099 .bpm = 6, 00100 .block_sizes = block_sizes_dv2550, 00101 .audio_stride = 108, 00102 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ 00103 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, 00104 .audio_shuffle = dv_audio_shuffle625, 00105 }, 00106 { .dsf = 0, 00107 .video_stype = 0x4, 00108 .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */ 00109 .difseg_size = 10, /* also known as "DVCPRO50" */ 00110 .n_difchan = 2, 00111 .time_base = { 1001, 30000 }, 00112 .ltc_divisor = 30, 00113 .height = 480, 00114 .width = 720, 00115 .sar = {{10, 11}, {40, 33}}, 00116 .work_chunks = &work_chunks_dv50ntsc[0], 00117 .idct_factor = &dv_idct_factor_sd[0], 00118 .pix_fmt = PIX_FMT_YUV422P, 00119 .bpm = 6, 00120 .block_sizes = block_sizes_dv2550, 00121 .audio_stride = 90, 00122 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ 00123 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ 00124 .audio_shuffle = dv_audio_shuffle525, 00125 }, 00126 { .dsf = 1, 00127 .video_stype = 0x4, 00128 .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */ 00129 .difseg_size = 12, /* also known as "DVCPRO50" */ 00130 .n_difchan = 2, 00131 .time_base = { 1, 25 }, 00132 .ltc_divisor = 25, 00133 .height = 576, 00134 .width = 720, 00135 .sar = {{59, 54}, {118, 81}}, 00136 .work_chunks = &work_chunks_dv50pal[0], 00137 .idct_factor = &dv_idct_factor_sd[0], 00138 .pix_fmt = PIX_FMT_YUV422P, 00139 .bpm = 6, 00140 .block_sizes = block_sizes_dv2550, 00141 .audio_stride = 108, 00142 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ 00143 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, 00144 .audio_shuffle = dv_audio_shuffle625, 00145 }, 00146 { .dsf = 0, 00147 .video_stype = 0x14, 00148 .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */ 00149 .difseg_size = 10, /* also known as "DVCPRO HD" */ 00150 .n_difchan = 4, 00151 .time_base = { 1001, 30000 }, 00152 .ltc_divisor = 30, 00153 .height = 1080, 00154 .width = 1280, 00155 .sar = {{1, 1}, {3, 2}}, 00156 .work_chunks = &work_chunks_dv100ntsci[0], 00157 .idct_factor = &dv_idct_factor_hd1080[0], 00158 .pix_fmt = PIX_FMT_YUV422P, 00159 .bpm = 8, 00160 .block_sizes = block_sizes_dv100, 00161 .audio_stride = 90, 00162 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ 00163 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ 00164 .audio_shuffle = dv_audio_shuffle525, 00165 }, 00166 { .dsf = 1, 00167 .video_stype = 0x14, 00168 .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */ 00169 .difseg_size = 12, /* also known as "DVCPRO HD" */ 00170 .n_difchan = 4, 00171 .time_base = { 1, 25 }, 00172 .ltc_divisor = 25, 00173 .height = 1080, 00174 .width = 1440, 00175 .sar = {{1, 1}, {4, 3}}, 00176 .work_chunks = &work_chunks_dv100pali[0], 00177 .idct_factor = &dv_idct_factor_hd1080[0], 00178 .pix_fmt = PIX_FMT_YUV422P, 00179 .bpm = 8, 00180 .block_sizes = block_sizes_dv100, 00181 .audio_stride = 108, 00182 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ 00183 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, 00184 .audio_shuffle = dv_audio_shuffle625, 00185 }, 00186 { .dsf = 0, 00187 .video_stype = 0x18, 00188 .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */ 00189 .difseg_size = 10, /* also known as "DVCPRO HD" */ 00190 .n_difchan = 2, 00191 .time_base = { 1001, 60000 }, 00192 .ltc_divisor = 60, 00193 .height = 720, 00194 .width = 960, 00195 .sar = {{1, 1}, {4, 3}}, 00196 .work_chunks = &work_chunks_dv100ntscp[0], 00197 .idct_factor = &dv_idct_factor_hd720[0], 00198 .pix_fmt = PIX_FMT_YUV422P, 00199 .bpm = 8, 00200 .block_sizes = block_sizes_dv100, 00201 .audio_stride = 90, 00202 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ 00203 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ 00204 .audio_shuffle = dv_audio_shuffle525, 00205 }, 00206 { .dsf = 1, 00207 .video_stype = 0x18, 00208 .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */ 00209 .difseg_size = 12, /* also known as "DVCPRO HD" */ 00210 .n_difchan = 2, 00211 .time_base = { 1, 50 }, 00212 .ltc_divisor = 50, 00213 .height = 720, 00214 .width = 960, 00215 .sar = {{1, 1}, {4, 3}}, 00216 .work_chunks = &work_chunks_dv100palp[0], 00217 .idct_factor = &dv_idct_factor_hd720[0], 00218 .pix_fmt = PIX_FMT_YUV422P, 00219 .bpm = 8, 00220 .block_sizes = block_sizes_dv100, 00221 .audio_stride = 90, 00222 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ 00223 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, 00224 .audio_shuffle = dv_audio_shuffle625, 00225 }, 00226 { .dsf = 1, 00227 .video_stype = 0x1, 00228 .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */ 00229 .difseg_size = 12, 00230 .n_difchan = 1, 00231 .time_base = { 1, 25 }, 00232 .ltc_divisor = 25, 00233 .height = 576, 00234 .width = 720, 00235 .sar = {{59, 54}, {118, 81}}, 00236 .work_chunks = &work_chunks_dv25pal[0], 00237 .idct_factor = &dv_idct_factor_sd[0], 00238 .pix_fmt = PIX_FMT_YUV420P, 00239 .bpm = 6, 00240 .block_sizes = block_sizes_dv2550, 00241 .audio_stride = 108, 00242 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ 00243 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, 00244 .audio_shuffle = dv_audio_shuffle625, 00245 } 00246 }; 00247 00248 const DVprofile* ff_dv_frame_profile(const DVprofile *sys, 00249 const uint8_t* frame, unsigned buf_size) 00250 { 00251 int i; 00252 00253 int dsf = (frame[3] & 0x80) >> 7; 00254 00255 int stype = frame[80*5 + 48 + 3] & 0x1f; 00256 00257 /* 576i50 25Mbps 4:1:1 is a special case */ 00258 if (dsf == 1 && stype == 0 && frame[5] & 0x07) { 00259 return &dv_profiles[2]; 00260 } 00261 00262 for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++) 00263 if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype) 00264 return &dv_profiles[i]; 00265 00266 /* check if old sys matches and assumes corrupted input */ 00267 if (sys && buf_size == sys->frame_size) 00268 return sys; 00269 00270 return NULL; 00271 } 00272 00273 const DVprofile* ff_dv_codec_profile(AVCodecContext* codec) 00274 { 00275 int i; 00276 00277 for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++) 00278 if (codec->height == dv_profiles[i].height && 00279 codec->pix_fmt == dv_profiles[i].pix_fmt && 00280 codec->width == dv_profiles[i].width) 00281 return &dv_profiles[i]; 00282 00283 return NULL; 00284 } 00285