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dv_profile.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <stdint.h>
20 
21 #include "libavutil/common.h"
22 #include "libavutil/intreadwrite.h"
23 #include "libavutil/log.h"
24 #include "libavutil/pixdesc.h"
25 #include "avcodec.h"
26 #include "dv_profile.h"
27 
28 static DVwork_chunk work_chunks_dv25pal [1*12*27];
29 static DVwork_chunk work_chunks_dv25pal411[1*12*27];
30 static DVwork_chunk work_chunks_dv25ntsc [1*10*27];
31 static DVwork_chunk work_chunks_dv50pal [2*12*27];
32 static DVwork_chunk work_chunks_dv50ntsc [2*10*27];
33 static DVwork_chunk work_chunks_dv100palp [2*12*27];
34 static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
35 static DVwork_chunk work_chunks_dv100pali [4*12*27];
36 static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
37 
38 static uint32_t dv_idct_factor_sd [2*2*22*64];
39 static uint32_t dv_idct_factor_hd1080[2*4*16*64];
40 static uint32_t dv_idct_factor_hd720 [2*4*16*64];
41 
42 static const uint8_t dv_audio_shuffle525[10][9] = {
43  { 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
44  { 6, 36, 66, 26, 56, 86, 16, 46, 76 },
45  { 12, 42, 72, 2, 32, 62, 22, 52, 82 },
46  { 18, 48, 78, 8, 38, 68, 28, 58, 88 },
47  { 24, 54, 84, 14, 44, 74, 4, 34, 64 },
48 
49  { 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
50  { 7, 37, 67, 27, 57, 87, 17, 47, 77 },
51  { 13, 43, 73, 3, 33, 63, 23, 53, 83 },
52  { 19, 49, 79, 9, 39, 69, 29, 59, 89 },
53  { 25, 55, 85, 15, 45, 75, 5, 35, 65 },
54 };
55 
56 static const uint8_t dv_audio_shuffle625[12][9] = {
57  { 0, 36, 72, 26, 62, 98, 16, 52, 88}, /* 1st channel */
58  { 6, 42, 78, 32, 68, 104, 22, 58, 94},
59  { 12, 48, 84, 2, 38, 74, 28, 64, 100},
60  { 18, 54, 90, 8, 44, 80, 34, 70, 106},
61  { 24, 60, 96, 14, 50, 86, 4, 40, 76},
62  { 30, 66, 102, 20, 56, 92, 10, 46, 82},
63 
64  { 1, 37, 73, 27, 63, 99, 17, 53, 89}, /* 2nd channel */
65  { 7, 43, 79, 33, 69, 105, 23, 59, 95},
66  { 13, 49, 85, 3, 39, 75, 29, 65, 101},
67  { 19, 55, 91, 9, 45, 81, 35, 71, 107},
68  { 25, 61, 97, 15, 51, 87, 5, 41, 77},
69  { 31, 67, 103, 21, 57, 93, 11, 47, 83},
70 };
71 
72 /* macroblock bit budgets */
73 static const uint8_t block_sizes_dv2550[8] = {
74  112, 112, 112, 112, 80, 80, 0, 0,
75 };
76 
77 static const uint8_t block_sizes_dv100[8] = {
78  80, 80, 80, 80, 80, 80, 64, 64,
79 };
80 
81 static const DVprofile dv_profiles[] = {
82  { .dsf = 0,
83  .video_stype = 0x0,
84  .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
85  .difseg_size = 10,
86  .n_difchan = 1,
87  .time_base = { 1001, 30000 },
88  .ltc_divisor = 30,
89  .height = 480,
90  .width = 720,
91  .sar = {{8, 9}, {32, 27}},
92  .work_chunks = &work_chunks_dv25ntsc[0],
93  .idct_factor = &dv_idct_factor_sd[0],
94  .pix_fmt = AV_PIX_FMT_YUV411P,
95  .bpm = 6,
96  .block_sizes = block_sizes_dv2550,
97  .audio_stride = 90,
98  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
99  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
100  .audio_shuffle = dv_audio_shuffle525,
101  },
102  { .dsf = 1,
103  .video_stype = 0x0,
104  .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
105  .difseg_size = 12,
106  .n_difchan = 1,
107  .time_base = { 1, 25 },
108  .ltc_divisor = 25,
109  .height = 576,
110  .width = 720,
111  .sar = {{16, 15}, {64, 45}},
112  .work_chunks = &work_chunks_dv25pal[0],
113  .idct_factor = &dv_idct_factor_sd[0],
114  .pix_fmt = AV_PIX_FMT_YUV420P,
115  .bpm = 6,
116  .block_sizes = block_sizes_dv2550,
117  .audio_stride = 108,
118  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
119  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
120  .audio_shuffle = dv_audio_shuffle625,
121  },
122  { .dsf = 1,
123  .video_stype = 0x0,
124  .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
125  .difseg_size = 12,
126  .n_difchan = 1,
127  .time_base = { 1, 25 },
128  .ltc_divisor = 25,
129  .height = 576,
130  .width = 720,
131  .sar = {{16, 15}, {64, 45}},
132  .work_chunks = &work_chunks_dv25pal411[0],
133  .idct_factor = &dv_idct_factor_sd[0],
134  .pix_fmt = AV_PIX_FMT_YUV411P,
135  .bpm = 6,
136  .block_sizes = block_sizes_dv2550,
137  .audio_stride = 108,
138  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
139  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
140  .audio_shuffle = dv_audio_shuffle625,
141  },
142  { .dsf = 0,
143  .video_stype = 0x4,
144  .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
145  .difseg_size = 10, /* also known as "DVCPRO50" */
146  .n_difchan = 2,
147  .time_base = { 1001, 30000 },
148  .ltc_divisor = 30,
149  .height = 480,
150  .width = 720,
151  .sar = {{8, 9}, {32, 27}},
152  .work_chunks = &work_chunks_dv50ntsc[0],
153  .idct_factor = &dv_idct_factor_sd[0],
154  .pix_fmt = AV_PIX_FMT_YUV422P,
155  .bpm = 6,
156  .block_sizes = block_sizes_dv2550,
157  .audio_stride = 90,
158  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
159  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
160  .audio_shuffle = dv_audio_shuffle525,
161  },
162  { .dsf = 1,
163  .video_stype = 0x4,
164  .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
165  .difseg_size = 12, /* also known as "DVCPRO50" */
166  .n_difchan = 2,
167  .time_base = { 1, 25 },
168  .ltc_divisor = 25,
169  .height = 576,
170  .width = 720,
171  .sar = {{16, 15}, {64, 45}},
172  .work_chunks = &work_chunks_dv50pal[0],
173  .idct_factor = &dv_idct_factor_sd[0],
174  .pix_fmt = AV_PIX_FMT_YUV422P,
175  .bpm = 6,
176  .block_sizes = block_sizes_dv2550,
177  .audio_stride = 108,
178  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
179  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
180  .audio_shuffle = dv_audio_shuffle625,
181  },
182  { .dsf = 0,
183  .video_stype = 0x14,
184  .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
185  .difseg_size = 10, /* also known as "DVCPRO HD" */
186  .n_difchan = 4,
187  .time_base = { 1001, 30000 },
188  .ltc_divisor = 30,
189  .height = 1080,
190  .width = 1280,
191  .sar = {{1, 1}, {3, 2}},
192  .work_chunks = &work_chunks_dv100ntsci[0],
193  .idct_factor = &dv_idct_factor_hd1080[0],
194  .pix_fmt = AV_PIX_FMT_YUV422P,
195  .bpm = 8,
196  .block_sizes = block_sizes_dv100,
197  .audio_stride = 90,
198  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
199  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
200  .audio_shuffle = dv_audio_shuffle525,
201  },
202  { .dsf = 1,
203  .video_stype = 0x14,
204  .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
205  .difseg_size = 12, /* also known as "DVCPRO HD" */
206  .n_difchan = 4,
207  .time_base = { 1, 25 },
208  .ltc_divisor = 25,
209  .height = 1080,
210  .width = 1440,
211  .sar = {{1, 1}, {4, 3}},
212  .work_chunks = &work_chunks_dv100pali[0],
213  .idct_factor = &dv_idct_factor_hd1080[0],
214  .pix_fmt = AV_PIX_FMT_YUV422P,
215  .bpm = 8,
216  .block_sizes = block_sizes_dv100,
217  .audio_stride = 108,
218  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
219  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
220  .audio_shuffle = dv_audio_shuffle625,
221  },
222  { .dsf = 0,
223  .video_stype = 0x18,
224  .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
225  .difseg_size = 10, /* also known as "DVCPRO HD" */
226  .n_difchan = 2,
227  .time_base = { 1001, 60000 },
228  .ltc_divisor = 60,
229  .height = 720,
230  .width = 960,
231  .sar = {{1, 1}, {4, 3}},
232  .work_chunks = &work_chunks_dv100ntscp[0],
233  .idct_factor = &dv_idct_factor_hd720[0],
234  .pix_fmt = AV_PIX_FMT_YUV422P,
235  .bpm = 8,
236  .block_sizes = block_sizes_dv100,
237  .audio_stride = 90,
238  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
239  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
240  .audio_shuffle = dv_audio_shuffle525,
241  },
242  { .dsf = 1,
243  .video_stype = 0x18,
244  .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
245  .difseg_size = 12, /* also known as "DVCPRO HD" */
246  .n_difchan = 2,
247  .time_base = { 1, 50 },
248  .ltc_divisor = 50,
249  .height = 720,
250  .width = 960,
251  .sar = {{1, 1}, {4, 3}},
252  .work_chunks = &work_chunks_dv100palp[0],
253  .idct_factor = &dv_idct_factor_hd720[0],
254  .pix_fmt = AV_PIX_FMT_YUV422P,
255  .bpm = 8,
256  .block_sizes = block_sizes_dv100,
257  .audio_stride = 90,
258  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
259  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
260  .audio_shuffle = dv_audio_shuffle625,
261  },
262  { .dsf = 1,
263  .video_stype = 0x1,
264  .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
265  .difseg_size = 12,
266  .n_difchan = 1,
267  .time_base = { 1, 25 },
268  .ltc_divisor = 25,
269  .height = 576,
270  .width = 720,
271  .sar = {{16, 15}, {64, 45}},
272  .work_chunks = &work_chunks_dv25pal[0],
273  .idct_factor = &dv_idct_factor_sd[0],
274  .pix_fmt = AV_PIX_FMT_YUV420P,
275  .bpm = 6,
276  .block_sizes = block_sizes_dv2550,
277  .audio_stride = 108,
278  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
279  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
280  .audio_shuffle = dv_audio_shuffle625,
281  }
282 };
283 
284 const DVprofile* avpriv_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys,
285  const uint8_t* frame, unsigned buf_size)
286 {
287  int i, dsf, stype;
288 
289  if(buf_size < DV_PROFILE_BYTES)
290  return NULL;
291 
292  dsf = (frame[3] & 0x80) >> 7;
293  stype = frame[80 * 5 + 48 + 3] & 0x1f;
294 
295  /* 576i50 25Mbps 4:1:1 is a special case */
296  if ((dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) ||
297  (stype == 31 && codec && codec->codec_tag==AV_RL32("SL25") && codec->coded_width==720 && codec->coded_height==576)) {
298  return &dv_profiles[2];
299  }
300 
301  if( stype == 0
302  && codec
303  && (codec->codec_tag==AV_RL32("dvsd") || codec->codec_tag==AV_RL32("CDVC"))
304  && codec->coded_width ==720
305  && codec->coded_height==576)
306  return &dv_profiles[1];
307 
308  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
309  if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
310  return &dv_profiles[i];
311 
312  /* check if old sys matches and assumes corrupted input */
313  if (sys && buf_size == sys->frame_size)
314  return sys;
315 
316  /* hack for trac issue #217, dv files created with QuickTime 3 */
317  if ((frame[3] & 0x7f) == 0x3f && frame[80 * 5 + 48 + 3] == 0xff)
318  return &dv_profiles[dsf];
319 
320  return NULL;
321 }
322 
323 const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,
324  const uint8_t* frame, unsigned buf_size)
325 {
326  return avpriv_dv_frame_profile2(NULL, sys, frame, buf_size);
327 }
328 
329 const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec)
330 {
331  int i;
332  int w, h;
333 
334  if (codec->coded_width || codec->coded_height) {
335  w = codec->coded_width;
336  h = codec->coded_height;
337  } else {
338  w = codec->width;
339  h = codec->height;
340  }
341 
342  for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
343  if (h == dv_profiles[i].height &&
344  codec->pix_fmt == dv_profiles[i].pix_fmt &&
345  w == dv_profiles[i].width)
346  return &dv_profiles[i];
347 
348  return NULL;
349 }
350 
351 void ff_dv_print_profiles(void *logctx, int loglevel)
352 {
353  int i;
354  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
355  const DVprofile *p = &dv_profiles[i];
356  av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, "
357  "framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
358  p->time_base.den, p->time_base.num);
359  }
360 }
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