2 * Constants for DV codec
3 * Copyright (c) 2002 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; 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/pixdesc.h"
32 /* unquant tables (not used directly) */
33 const uint8_t ff_dv_quant_shifts[22][4] = {
58 const uint8_t ff_dv_quant_offset[4] = { 6, 3, 0, 1 };
60 const int ff_dv_iweight_88[64] = {
61 32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079,
62 18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284,
63 19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262,
64 20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815,
65 20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400,
66 21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764,
67 24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191,
68 25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536,
70 const int ff_dv_iweight_248[64] = {
71 32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196,
72 19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079,
73 20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764,
74 17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692,
75 21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191,
76 18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867,
77 24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173,
78 22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642,
82 * The "inverse" DV100 weights are actually just the spec weights (zig-zagged).
84 const int ff_dv_iweight_1080_y[64] = {
85 128, 16, 16, 17, 17, 17, 18, 18,
86 18, 18, 18, 18, 19, 18, 18, 19,
87 19, 19, 19, 19, 19, 42, 38, 40,
88 40, 40, 38, 42, 44, 43, 41, 41,
89 41, 41, 43, 44, 45, 45, 42, 42,
90 42, 45, 45, 48, 46, 43, 43, 46,
91 48, 49, 48, 44, 48, 49, 101, 98,
92 98, 101, 104, 109, 104, 116, 116, 123,
94 const int ff_dv_iweight_1080_c[64] = {
95 128, 16, 16, 17, 17, 17, 25, 25,
96 25, 25, 26, 25, 26, 25, 26, 26,
97 26, 27, 27, 26, 26, 42, 38, 40,
98 40, 40, 38, 42, 44, 43, 41, 41,
99 41, 41, 43, 44, 91, 91, 84, 84,
100 84, 91, 91, 96, 93, 86, 86, 93,
101 96, 197, 191, 177, 191, 197, 203, 197,
102 197, 203, 209, 219, 209, 232, 232, 246,
104 const int ff_dv_iweight_720_y[64] = {
105 128, 16, 16, 17, 17, 17, 18, 18,
106 18, 18, 18, 18, 19, 18, 18, 19,
107 19, 19, 19, 19, 19, 42, 38, 40,
108 40, 40, 38, 42, 44, 43, 41, 41,
109 41, 41, 43, 44, 68, 68, 63, 63,
110 63, 68, 68, 96, 92, 86, 86, 92,
111 96, 98, 96, 88, 96, 98, 202, 196,
112 196, 202, 208, 218, 208, 232, 232, 246,
114 const int ff_dv_iweight_720_c[64] = {
115 128, 24, 24, 26, 26, 26, 36, 36,
116 36, 36, 36, 36, 38, 36, 36, 38,
117 38, 38, 38, 38, 38, 84, 76, 80,
118 80, 80, 76, 84, 88, 86, 82, 82,
119 82, 82, 86, 88, 182, 182, 168, 168,
120 168, 182, 182, 192, 186, 192, 172, 186,
121 192, 394, 382, 354, 382, 394, 406, 394,
122 394, 406, 418, 438, 418, 464, 464, 492,
125 static DVwork_chunk work_chunks_dv25pal [1*12*27];
126 static DVwork_chunk work_chunks_dv25pal411[1*12*27];
127 static DVwork_chunk work_chunks_dv25ntsc [1*10*27];
128 static DVwork_chunk work_chunks_dv50pal [2*12*27];
129 static DVwork_chunk work_chunks_dv50ntsc [2*10*27];
130 static DVwork_chunk work_chunks_dv100palp [2*12*27];
131 static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
132 static DVwork_chunk work_chunks_dv100pali [4*12*27];
133 static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
135 static uint32_t dv_idct_factor_sd [2*2*22*64];
136 static uint32_t dv_idct_factor_hd1080[2*4*16*64];
137 static uint32_t dv_idct_factor_hd720 [2*4*16*64];
139 static const uint8_t dv_audio_shuffle525[10][9] = {
140 { 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
141 { 6, 36, 66, 26, 56, 86, 16, 46, 76 },
142 { 12, 42, 72, 2, 32, 62, 22, 52, 82 },
143 { 18, 48, 78, 8, 38, 68, 28, 58, 88 },
144 { 24, 54, 84, 14, 44, 74, 4, 34, 64 },
146 { 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
147 { 7, 37, 67, 27, 57, 87, 17, 47, 77 },
148 { 13, 43, 73, 3, 33, 63, 23, 53, 83 },
149 { 19, 49, 79, 9, 39, 69, 29, 59, 89 },
150 { 25, 55, 85, 15, 45, 75, 5, 35, 65 },
153 static const uint8_t dv_audio_shuffle625[12][9] = {
154 { 0, 36, 72, 26, 62, 98, 16, 52, 88}, /* 1st channel */
155 { 6, 42, 78, 32, 68, 104, 22, 58, 94},
156 { 12, 48, 84, 2, 38, 74, 28, 64, 100},
157 { 18, 54, 90, 8, 44, 80, 34, 70, 106},
158 { 24, 60, 96, 14, 50, 86, 4, 40, 76},
159 { 30, 66, 102, 20, 56, 92, 10, 46, 82},
161 { 1, 37, 73, 27, 63, 99, 17, 53, 89}, /* 2nd channel */
162 { 7, 43, 79, 33, 69, 105, 23, 59, 95},
163 { 13, 49, 85, 3, 39, 75, 29, 65, 101},
164 { 19, 55, 91, 9, 45, 81, 35, 71, 107},
165 { 25, 61, 97, 15, 51, 87, 5, 41, 77},
166 { 31, 67, 103, 21, 57, 93, 11, 47, 83},
169 /* macroblock bit budgets */
170 static const uint8_t block_sizes_dv2550[8] = {
171 112, 112, 112, 112, 80, 80, 0, 0,
174 static const uint8_t block_sizes_dv100[8] = {
175 80, 80, 80, 80, 80, 80, 64, 64,
177 static const DVprofile dv_profiles[] = {
180 .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
183 .time_base = { 1001, 30000 },
187 .sar = {{8, 9}, {32, 27}},
188 .work_chunks = &work_chunks_dv25ntsc[0],
189 .idct_factor = &dv_idct_factor_sd[0],
190 .pix_fmt = PIX_FMT_YUV411P,
192 .block_sizes = block_sizes_dv2550,
194 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
195 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
196 .audio_shuffle = dv_audio_shuffle525,
200 .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
203 .time_base = { 1, 25 },
207 .sar = {{16, 15}, {64, 45}},
208 .work_chunks = &work_chunks_dv25pal[0],
209 .idct_factor = &dv_idct_factor_sd[0],
210 .pix_fmt = PIX_FMT_YUV420P,
212 .block_sizes = block_sizes_dv2550,
214 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
215 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
216 .audio_shuffle = dv_audio_shuffle625,
220 .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
223 .time_base = { 1, 25 },
227 .sar = {{16, 15}, {64, 45}},
228 .work_chunks = &work_chunks_dv25pal411[0],
229 .idct_factor = &dv_idct_factor_sd[0],
230 .pix_fmt = PIX_FMT_YUV411P,
232 .block_sizes = block_sizes_dv2550,
234 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
235 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
236 .audio_shuffle = dv_audio_shuffle625,
240 .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
241 .difseg_size = 10, /* also known as "DVCPRO50" */
243 .time_base = { 1001, 30000 },
247 .sar = {{8, 9}, {32, 27}},
248 .work_chunks = &work_chunks_dv50ntsc[0],
249 .idct_factor = &dv_idct_factor_sd[0],
250 .pix_fmt = PIX_FMT_YUV422P,
252 .block_sizes = block_sizes_dv2550,
254 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
255 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
256 .audio_shuffle = dv_audio_shuffle525,
260 .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
261 .difseg_size = 12, /* also known as "DVCPRO50" */
263 .time_base = { 1, 25 },
267 .sar = {{16, 15}, {64, 45}},
268 .work_chunks = &work_chunks_dv50pal[0],
269 .idct_factor = &dv_idct_factor_sd[0],
270 .pix_fmt = PIX_FMT_YUV422P,
272 .block_sizes = block_sizes_dv2550,
274 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
275 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
276 .audio_shuffle = dv_audio_shuffle625,
280 .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
281 .difseg_size = 10, /* also known as "DVCPRO HD" */
283 .time_base = { 1001, 30000 },
287 .sar = {{1, 1}, {3, 2}},
288 .work_chunks = &work_chunks_dv100ntsci[0],
289 .idct_factor = &dv_idct_factor_hd1080[0],
290 .pix_fmt = PIX_FMT_YUV422P,
292 .block_sizes = block_sizes_dv100,
294 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
295 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
296 .audio_shuffle = dv_audio_shuffle525,
300 .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
301 .difseg_size = 12, /* also known as "DVCPRO HD" */
303 .time_base = { 1, 25 },
307 .sar = {{1, 1}, {4, 3}},
308 .work_chunks = &work_chunks_dv100pali[0],
309 .idct_factor = &dv_idct_factor_hd1080[0],
310 .pix_fmt = PIX_FMT_YUV422P,
312 .block_sizes = block_sizes_dv100,
314 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
315 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
316 .audio_shuffle = dv_audio_shuffle625,
320 .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
321 .difseg_size = 10, /* also known as "DVCPRO HD" */
323 .time_base = { 1001, 60000 },
327 .sar = {{1, 1}, {4, 3}},
328 .work_chunks = &work_chunks_dv100ntscp[0],
329 .idct_factor = &dv_idct_factor_hd720[0],
330 .pix_fmt = PIX_FMT_YUV422P,
332 .block_sizes = block_sizes_dv100,
334 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
335 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
336 .audio_shuffle = dv_audio_shuffle525,
340 .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
341 .difseg_size = 12, /* also known as "DVCPRO HD" */
343 .time_base = { 1, 50 },
347 .sar = {{1, 1}, {4, 3}},
348 .work_chunks = &work_chunks_dv100palp[0],
349 .idct_factor = &dv_idct_factor_hd720[0],
350 .pix_fmt = PIX_FMT_YUV422P,
352 .block_sizes = block_sizes_dv100,
354 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
355 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
356 .audio_shuffle = dv_audio_shuffle625,
360 .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
363 .time_base = { 1, 25 },
367 .sar = {{16, 15}, {64, 45}},
368 .work_chunks = &work_chunks_dv25pal[0],
369 .idct_factor = &dv_idct_factor_sd[0],
370 .pix_fmt = PIX_FMT_YUV420P,
372 .block_sizes = block_sizes_dv2550,
374 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
375 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
376 .audio_shuffle = dv_audio_shuffle625,
380 const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,
381 const uint8_t* frame, unsigned buf_size)
385 if (buf_size < 80 * 5 + 48 + 4)
388 dsf = (frame[3] & 0x80) >> 7;
389 stype = frame[80 * 5 + 48 + 3] & 0x1f;
391 /* 576i50 25Mbps 4:1:1 is a special case */
392 if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) {
393 return &dv_profiles[2];
396 for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
397 if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
398 return &dv_profiles[i];
400 /* check if old sys matches and assumes corrupted input */
401 if (sys && buf_size == sys->frame_size)
407 const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec)
411 for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
412 if (codec->height == dv_profiles[i].height &&
413 codec->pix_fmt == dv_profiles[i].pix_fmt &&
414 codec->width == dv_profiles[i].width)
415 return &dv_profiles[i];
420 void ff_dv_print_profiles(void *logctx, int loglevel)
423 for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
424 const DVprofile *p = &dv_profiles[i];
425 av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, "
426 "framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
427 p->time_base.den, p->time_base.num);