2 * Constants for DV codec
3 * Copyright (c) 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
24 * Constants for DV codec.
27 #include "libavutil/rational.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/pixdesc.h"
33 /* unquant tables (not used directly) */
34 const uint8_t ff_dv_quant_shifts[22][4] = {
59 const uint8_t ff_dv_quant_offset[4] = { 6, 3, 0, 1 };
61 const int ff_dv_iweight_88[64] = {
62 32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079,
63 18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284,
64 19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262,
65 20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815,
66 20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400,
67 21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764,
68 24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191,
69 25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536,
71 const int ff_dv_iweight_248[64] = {
72 32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196,
73 19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079,
74 20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764,
75 17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692,
76 21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191,
77 18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867,
78 24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173,
79 22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642,
83 * The "inverse" DV100 weights are actually just the spec weights (zig-zagged).
85 const int ff_dv_iweight_1080_y[64] = {
86 128, 16, 16, 17, 17, 17, 18, 18,
87 18, 18, 18, 18, 19, 18, 18, 19,
88 19, 19, 19, 19, 19, 42, 38, 40,
89 40, 40, 38, 42, 44, 43, 41, 41,
90 41, 41, 43, 44, 45, 45, 42, 42,
91 42, 45, 45, 48, 46, 43, 43, 46,
92 48, 49, 48, 44, 48, 49, 101, 98,
93 98, 101, 104, 109, 104, 116, 116, 123,
95 const int ff_dv_iweight_1080_c[64] = {
96 128, 16, 16, 17, 17, 17, 25, 25,
97 25, 25, 26, 25, 26, 25, 26, 26,
98 26, 27, 27, 26, 26, 42, 38, 40,
99 40, 40, 38, 42, 44, 43, 41, 41,
100 41, 41, 43, 44, 91, 91, 84, 84,
101 84, 91, 91, 96, 93, 86, 86, 93,
102 96, 197, 191, 177, 191, 197, 203, 197,
103 197, 203, 209, 219, 209, 232, 232, 246,
105 const int ff_dv_iweight_720_y[64] = {
106 128, 16, 16, 17, 17, 17, 18, 18,
107 18, 18, 18, 18, 19, 18, 18, 19,
108 19, 19, 19, 19, 19, 42, 38, 40,
109 40, 40, 38, 42, 44, 43, 41, 41,
110 41, 41, 43, 44, 68, 68, 63, 63,
111 63, 68, 68, 96, 92, 86, 86, 92,
112 96, 98, 96, 88, 96, 98, 202, 196,
113 196, 202, 208, 218, 208, 232, 232, 246,
115 const int ff_dv_iweight_720_c[64] = {
116 128, 24, 24, 26, 26, 26, 36, 36,
117 36, 36, 36, 36, 38, 36, 36, 38,
118 38, 38, 38, 38, 38, 84, 76, 80,
119 80, 80, 76, 84, 88, 86, 82, 82,
120 82, 82, 86, 88, 182, 182, 168, 168,
121 168, 182, 182, 192, 186, 192, 172, 186,
122 192, 394, 382, 354, 382, 394, 406, 394,
123 394, 406, 418, 438, 418, 464, 464, 492,
126 static DVwork_chunk work_chunks_dv25pal [1*12*27];
127 static DVwork_chunk work_chunks_dv25pal411[1*12*27];
128 static DVwork_chunk work_chunks_dv25ntsc [1*10*27];
129 static DVwork_chunk work_chunks_dv50pal [2*12*27];
130 static DVwork_chunk work_chunks_dv50ntsc [2*10*27];
131 static DVwork_chunk work_chunks_dv100palp [2*12*27];
132 static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
133 static DVwork_chunk work_chunks_dv100pali [4*12*27];
134 static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
136 static uint32_t dv_idct_factor_sd [2*2*22*64];
137 static uint32_t dv_idct_factor_hd1080[2*4*16*64];
138 static uint32_t dv_idct_factor_hd720 [2*4*16*64];
140 static const uint8_t dv_audio_shuffle525[10][9] = {
141 { 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
142 { 6, 36, 66, 26, 56, 86, 16, 46, 76 },
143 { 12, 42, 72, 2, 32, 62, 22, 52, 82 },
144 { 18, 48, 78, 8, 38, 68, 28, 58, 88 },
145 { 24, 54, 84, 14, 44, 74, 4, 34, 64 },
147 { 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
148 { 7, 37, 67, 27, 57, 87, 17, 47, 77 },
149 { 13, 43, 73, 3, 33, 63, 23, 53, 83 },
150 { 19, 49, 79, 9, 39, 69, 29, 59, 89 },
151 { 25, 55, 85, 15, 45, 75, 5, 35, 65 },
154 static const uint8_t dv_audio_shuffle625[12][9] = {
155 { 0, 36, 72, 26, 62, 98, 16, 52, 88}, /* 1st channel */
156 { 6, 42, 78, 32, 68, 104, 22, 58, 94},
157 { 12, 48, 84, 2, 38, 74, 28, 64, 100},
158 { 18, 54, 90, 8, 44, 80, 34, 70, 106},
159 { 24, 60, 96, 14, 50, 86, 4, 40, 76},
160 { 30, 66, 102, 20, 56, 92, 10, 46, 82},
162 { 1, 37, 73, 27, 63, 99, 17, 53, 89}, /* 2nd channel */
163 { 7, 43, 79, 33, 69, 105, 23, 59, 95},
164 { 13, 49, 85, 3, 39, 75, 29, 65, 101},
165 { 19, 55, 91, 9, 45, 81, 35, 71, 107},
166 { 25, 61, 97, 15, 51, 87, 5, 41, 77},
167 { 31, 67, 103, 21, 57, 93, 11, 47, 83},
170 /* macroblock bit budgets */
171 static const uint8_t block_sizes_dv2550[8] = {
172 112, 112, 112, 112, 80, 80, 0, 0,
175 static const uint8_t block_sizes_dv100[8] = {
176 80, 80, 80, 80, 80, 80, 64, 64,
178 static const DVprofile dv_profiles[] = {
181 .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
184 .time_base = { 1001, 30000 },
188 .sar = {{8, 9}, {32, 27}},
189 .work_chunks = &work_chunks_dv25ntsc[0],
190 .idct_factor = &dv_idct_factor_sd[0],
191 .pix_fmt = PIX_FMT_YUV411P,
193 .block_sizes = block_sizes_dv2550,
195 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
196 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
197 .audio_shuffle = dv_audio_shuffle525,
201 .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
204 .time_base = { 1, 25 },
208 .sar = {{16, 15}, {64, 45}},
209 .work_chunks = &work_chunks_dv25pal[0],
210 .idct_factor = &dv_idct_factor_sd[0],
211 .pix_fmt = PIX_FMT_YUV420P,
213 .block_sizes = block_sizes_dv2550,
215 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
216 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
217 .audio_shuffle = dv_audio_shuffle625,
221 .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
224 .time_base = { 1, 25 },
228 .sar = {{16, 15}, {64, 45}},
229 .work_chunks = &work_chunks_dv25pal411[0],
230 .idct_factor = &dv_idct_factor_sd[0],
231 .pix_fmt = PIX_FMT_YUV411P,
233 .block_sizes = block_sizes_dv2550,
235 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
236 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
237 .audio_shuffle = dv_audio_shuffle625,
241 .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
242 .difseg_size = 10, /* also known as "DVCPRO50" */
244 .time_base = { 1001, 30000 },
248 .sar = {{8, 9}, {32, 27}},
249 .work_chunks = &work_chunks_dv50ntsc[0],
250 .idct_factor = &dv_idct_factor_sd[0],
251 .pix_fmt = PIX_FMT_YUV422P,
253 .block_sizes = block_sizes_dv2550,
255 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
256 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
257 .audio_shuffle = dv_audio_shuffle525,
261 .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
262 .difseg_size = 12, /* also known as "DVCPRO50" */
264 .time_base = { 1, 25 },
268 .sar = {{16, 15}, {64, 45}},
269 .work_chunks = &work_chunks_dv50pal[0],
270 .idct_factor = &dv_idct_factor_sd[0],
271 .pix_fmt = PIX_FMT_YUV422P,
273 .block_sizes = block_sizes_dv2550,
275 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
276 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
277 .audio_shuffle = dv_audio_shuffle625,
281 .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
282 .difseg_size = 10, /* also known as "DVCPRO HD" */
284 .time_base = { 1001, 30000 },
288 .sar = {{1, 1}, {3, 2}},
289 .work_chunks = &work_chunks_dv100ntsci[0],
290 .idct_factor = &dv_idct_factor_hd1080[0],
291 .pix_fmt = PIX_FMT_YUV422P,
293 .block_sizes = block_sizes_dv100,
295 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
296 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
297 .audio_shuffle = dv_audio_shuffle525,
301 .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
302 .difseg_size = 12, /* also known as "DVCPRO HD" */
304 .time_base = { 1, 25 },
308 .sar = {{1, 1}, {4, 3}},
309 .work_chunks = &work_chunks_dv100pali[0],
310 .idct_factor = &dv_idct_factor_hd1080[0],
311 .pix_fmt = PIX_FMT_YUV422P,
313 .block_sizes = block_sizes_dv100,
315 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
316 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
317 .audio_shuffle = dv_audio_shuffle625,
321 .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
322 .difseg_size = 10, /* also known as "DVCPRO HD" */
324 .time_base = { 1001, 60000 },
328 .sar = {{1, 1}, {4, 3}},
329 .work_chunks = &work_chunks_dv100ntscp[0],
330 .idct_factor = &dv_idct_factor_hd720[0],
331 .pix_fmt = PIX_FMT_YUV422P,
333 .block_sizes = block_sizes_dv100,
335 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
336 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
337 .audio_shuffle = dv_audio_shuffle525,
341 .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
342 .difseg_size = 12, /* also known as "DVCPRO HD" */
344 .time_base = { 1, 50 },
348 .sar = {{1, 1}, {4, 3}},
349 .work_chunks = &work_chunks_dv100palp[0],
350 .idct_factor = &dv_idct_factor_hd720[0],
351 .pix_fmt = PIX_FMT_YUV422P,
353 .block_sizes = block_sizes_dv100,
355 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
356 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
357 .audio_shuffle = dv_audio_shuffle625,
361 .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
364 .time_base = { 1, 25 },
368 .sar = {{16, 15}, {64, 45}},
369 .work_chunks = &work_chunks_dv25pal[0],
370 .idct_factor = &dv_idct_factor_sd[0],
371 .pix_fmt = PIX_FMT_YUV420P,
373 .block_sizes = block_sizes_dv2550,
375 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
376 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
377 .audio_shuffle = dv_audio_shuffle625,
381 const DVprofile* avpriv_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys,
382 const uint8_t* frame, unsigned buf_size)
386 if(buf_size < DV_PROFILE_BYTES)
389 dsf = (frame[3] & 0x80) >> 7;
390 stype = frame[80 * 5 + 48 + 3] & 0x1f;
392 /* 576i50 25Mbps 4:1:1 is a special case */
393 if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) {
394 return &dv_profiles[2];
397 if(stype == 0 && codec && codec->codec_tag==AV_RL32("dvsd") && codec->coded_width==720 && codec->coded_height==576)
398 return &dv_profiles[1];
400 for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
401 if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
402 return &dv_profiles[i];
404 /* check if old sys matches and assumes corrupted input */
405 if (sys && buf_size == sys->frame_size)
408 /* hack for trac issue #217, dv files created with QuickTime 3 */
409 if ((frame[3] & 0x7f) == 0x3f && frame[80 * 5 + 48 + 3] == 0xff)
410 return &dv_profiles[dsf];
415 const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,
416 const uint8_t* frame, unsigned buf_size)
418 return avpriv_dv_frame_profile2(NULL, sys, frame, buf_size);
421 const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec)
426 if (codec->coded_width || codec->coded_height) {
427 w = codec->coded_width;
428 h = codec->coded_height;
434 for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
435 if (h == dv_profiles[i].height &&
436 codec->pix_fmt == dv_profiles[i].pix_fmt &&
437 w == dv_profiles[i].width)
438 return &dv_profiles[i];
443 void ff_dv_print_profiles(void *logctx, int loglevel)
446 for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
447 const DVprofile *p = &dv_profiles[i];
448 av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, "
449 "framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
450 p->time_base.den, p->time_base.num);