FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
dv_profile.c
Go to the documentation of this file.
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 "config.h"
22 
23 #include "libavutil/common.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/log.h"
26 #include "libavutil/pixdesc.h"
27 #include "avcodec.h"
28 #include "dv_profile.h"
29 #include "dv_profile_internal.h"
30 
31 #if CONFIG_DVPROFILE
32 
33 static const uint8_t dv_audio_shuffle525[10][9] = {
34  { 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
35  { 6, 36, 66, 26, 56, 86, 16, 46, 76 },
36  { 12, 42, 72, 2, 32, 62, 22, 52, 82 },
37  { 18, 48, 78, 8, 38, 68, 28, 58, 88 },
38  { 24, 54, 84, 14, 44, 74, 4, 34, 64 },
39 
40  { 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
41  { 7, 37, 67, 27, 57, 87, 17, 47, 77 },
42  { 13, 43, 73, 3, 33, 63, 23, 53, 83 },
43  { 19, 49, 79, 9, 39, 69, 29, 59, 89 },
44  { 25, 55, 85, 15, 45, 75, 5, 35, 65 },
45 };
46 
47 static const uint8_t dv_audio_shuffle625[12][9] = {
48  { 0, 36, 72, 26, 62, 98, 16, 52, 88}, /* 1st channel */
49  { 6, 42, 78, 32, 68, 104, 22, 58, 94},
50  { 12, 48, 84, 2, 38, 74, 28, 64, 100},
51  { 18, 54, 90, 8, 44, 80, 34, 70, 106},
52  { 24, 60, 96, 14, 50, 86, 4, 40, 76},
53  { 30, 66, 102, 20, 56, 92, 10, 46, 82},
54 
55  { 1, 37, 73, 27, 63, 99, 17, 53, 89}, /* 2nd channel */
56  { 7, 43, 79, 33, 69, 105, 23, 59, 95},
57  { 13, 49, 85, 3, 39, 75, 29, 65, 101},
58  { 19, 55, 91, 9, 45, 81, 35, 71, 107},
59  { 25, 61, 97, 15, 51, 87, 5, 41, 77},
60  { 31, 67, 103, 21, 57, 93, 11, 47, 83},
61 };
62 
63 /* macroblock bit budgets */
64 static const uint8_t block_sizes_dv2550[8] = {
65  112, 112, 112, 112, 80, 80, 0, 0,
66 };
67 
68 static const uint8_t block_sizes_dv100[8] = {
69  80, 80, 80, 80, 80, 80, 64, 64,
70 };
71 
72 static const AVDVProfile dv_profiles[] = {
73  { .dsf = 0,
74  .video_stype = 0x0,
75  .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
76  .difseg_size = 10,
77  .n_difchan = 1,
78  .time_base = { 1001, 30000 },
79  .ltc_divisor = 30,
80  .height = 480,
81  .width = 720,
82  .sar = {{8, 9}, {32, 27}},
83  .pix_fmt = AV_PIX_FMT_YUV411P,
84  .bpm = 6,
85  .block_sizes = block_sizes_dv2550,
86  .audio_stride = 90,
87  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
88  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
89  .audio_shuffle = dv_audio_shuffle525,
90  },
91  { .dsf = 1,
92  .video_stype = 0x0,
93  .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
94  .difseg_size = 12,
95  .n_difchan = 1,
96  .time_base = { 1, 25 },
97  .ltc_divisor = 25,
98  .height = 576,
99  .width = 720,
100  .sar = {{16, 15}, {64, 45}},
101  .pix_fmt = AV_PIX_FMT_YUV420P,
102  .bpm = 6,
103  .block_sizes = block_sizes_dv2550,
104  .audio_stride = 108,
105  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
106  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
107  .audio_shuffle = dv_audio_shuffle625,
108  },
109  { .dsf = 1,
110  .video_stype = 0x0,
111  .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
112  .difseg_size = 12,
113  .n_difchan = 1,
114  .time_base = { 1, 25 },
115  .ltc_divisor = 25,
116  .height = 576,
117  .width = 720,
118  .sar = {{16, 15}, {64, 45}},
119  .pix_fmt = AV_PIX_FMT_YUV411P,
120  .bpm = 6,
121  .block_sizes = block_sizes_dv2550,
122  .audio_stride = 108,
123  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
124  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
125  .audio_shuffle = dv_audio_shuffle625,
126  },
127  { .dsf = 0,
128  .video_stype = 0x4,
129  .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
130  .difseg_size = 10, /* also known as "DVCPRO50" */
131  .n_difchan = 2,
132  .time_base = { 1001, 30000 },
133  .ltc_divisor = 30,
134  .height = 480,
135  .width = 720,
136  .sar = {{8, 9}, {32, 27}},
137  .pix_fmt = AV_PIX_FMT_YUV422P,
138  .bpm = 6,
139  .block_sizes = block_sizes_dv2550,
140  .audio_stride = 90,
141  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
142  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
143  .audio_shuffle = dv_audio_shuffle525,
144  },
145  { .dsf = 1,
146  .video_stype = 0x4,
147  .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
148  .difseg_size = 12, /* also known as "DVCPRO50" */
149  .n_difchan = 2,
150  .time_base = { 1, 25 },
151  .ltc_divisor = 25,
152  .height = 576,
153  .width = 720,
154  .sar = {{16, 15}, {64, 45}},
155  .pix_fmt = AV_PIX_FMT_YUV422P,
156  .bpm = 6,
157  .block_sizes = block_sizes_dv2550,
158  .audio_stride = 108,
159  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
160  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
161  .audio_shuffle = dv_audio_shuffle625,
162  },
163  { .dsf = 0,
164  .video_stype = 0x14,
165  .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
166  .difseg_size = 10, /* also known as "DVCPRO HD" */
167  .n_difchan = 4,
168  .time_base = { 1001, 30000 },
169  .ltc_divisor = 30,
170  .height = 1080,
171  .width = 1280,
172  .sar = {{1, 1}, {3, 2}},
173  .pix_fmt = AV_PIX_FMT_YUV422P,
174  .bpm = 8,
175  .block_sizes = block_sizes_dv100,
176  .audio_stride = 90,
177  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
178  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
179  .audio_shuffle = dv_audio_shuffle525,
180  },
181  { .dsf = 1,
182  .video_stype = 0x14,
183  .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
184  .difseg_size = 12, /* also known as "DVCPRO HD" */
185  .n_difchan = 4,
186  .time_base = { 1, 25 },
187  .ltc_divisor = 25,
188  .height = 1080,
189  .width = 1440,
190  .sar = {{1, 1}, {4, 3}},
191  .pix_fmt = AV_PIX_FMT_YUV422P,
192  .bpm = 8,
193  .block_sizes = block_sizes_dv100,
194  .audio_stride = 108,
195  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
196  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
197  .audio_shuffle = dv_audio_shuffle625,
198  },
199  { .dsf = 0,
200  .video_stype = 0x18,
201  .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
202  .difseg_size = 10, /* also known as "DVCPRO HD" */
203  .n_difchan = 2,
204  .time_base = { 1001, 60000 },
205  .ltc_divisor = 60,
206  .height = 720,
207  .width = 960,
208  .sar = {{1, 1}, {4, 3}},
209  .pix_fmt = AV_PIX_FMT_YUV422P,
210  .bpm = 8,
211  .block_sizes = block_sizes_dv100,
212  .audio_stride = 90,
213  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
214  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
215  .audio_shuffle = dv_audio_shuffle525,
216  },
217  { .dsf = 1,
218  .video_stype = 0x18,
219  .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
220  .difseg_size = 12, /* also known as "DVCPRO HD" */
221  .n_difchan = 2,
222  .time_base = { 1, 50 },
223  .ltc_divisor = 50,
224  .height = 720,
225  .width = 960,
226  .sar = {{1, 1}, {4, 3}},
227  .pix_fmt = AV_PIX_FMT_YUV422P,
228  .bpm = 8,
229  .block_sizes = block_sizes_dv100,
230  .audio_stride = 90,
231  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
232  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
233  .audio_shuffle = dv_audio_shuffle625,
234  },
235  { .dsf = 1,
236  .video_stype = 0x1,
237  .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
238  .difseg_size = 12,
239  .n_difchan = 1,
240  .time_base = { 1, 25 },
241  .ltc_divisor = 25,
242  .height = 576,
243  .width = 720,
244  .sar = {{16, 15}, {64, 45}},
245  .pix_fmt = AV_PIX_FMT_YUV420P,
246  .bpm = 6,
247  .block_sizes = block_sizes_dv2550,
248  .audio_stride = 108,
249  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
250  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
251  .audio_shuffle = dv_audio_shuffle625,
252  }
253 };
254 
255 void ff_dv_print_profiles(void *logctx, int loglevel)
256 {
257  int i;
258  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
259  const AVDVProfile *p = &dv_profiles[i];
260  av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, "
261  "framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
262  p->time_base.den, p->time_base.num);
263  }
264 }
265 
266 #endif /* CONFIG_DVPROFILE */
267 
268 const AVDVProfile* avpriv_dv_frame_profile2(AVCodecContext* codec, const AVDVProfile *sys,
269  const uint8_t* frame, unsigned buf_size)
270 {
271 #if CONFIG_DVPROFILE
272  int i, dsf, stype;
273 
274  if(buf_size < DV_PROFILE_BYTES)
275  return NULL;
276 
277  dsf = (frame[3] & 0x80) >> 7;
278  stype = frame[80 * 5 + 48 + 3] & 0x1f;
279 
280  /* 576i50 25Mbps 4:1:1 is a special case */
281  if ((dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) ||
282  (stype == 31 && codec && codec->codec_tag==AV_RL32("SL25") && codec->coded_width==720 && codec->coded_height==576)) {
283  return &dv_profiles[2];
284  }
285 
286  if( stype == 0
287  && codec
288  && (codec->codec_tag==AV_RL32("dvsd") || codec->codec_tag==AV_RL32("CDVC"))
289  && codec->coded_width ==720
290  && codec->coded_height==576)
291  return &dv_profiles[1];
292 
293  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
294  if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
295  return &dv_profiles[i];
296 
297  /* check if old sys matches and assumes corrupted input */
298  if (sys && buf_size == sys->frame_size)
299  return sys;
300 
301  /* hack for trac issue #217, dv files created with QuickTime 3 */
302  if ((frame[3] & 0x7f) == 0x3f && frame[80 * 5 + 48 + 3] == 0xff)
303  return &dv_profiles[dsf];
304 #endif
305 
306  return NULL;
307 }
308 
309 const AVDVProfile *av_dv_frame_profile(const AVDVProfile *sys,
310  const uint8_t* frame, unsigned buf_size)
311 {
312  return avpriv_dv_frame_profile2(NULL, sys, frame, buf_size);
313 }
314 
315 const AVDVProfile *av_dv_codec_profile(int width, int height,
316  enum AVPixelFormat pix_fmt)
317 {
318 #if CONFIG_DVPROFILE
319  int i;
320 
321  for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
322  if (height == dv_profiles[i].height &&
323  pix_fmt == dv_profiles[i].pix_fmt &&
324  width == dv_profiles[i].width)
325  return &dv_profiles[i];
326 #endif
327 
328  return NULL;
329 }
330 
331 #if LIBAVCODEC_VERSION_MAJOR < 56
332 const AVDVProfile *avpriv_dv_frame_profile(const AVDVProfile *sys,
333  const uint8_t* frame, unsigned buf_size)
334 {
335  return av_dv_frame_profile(sys, frame, buf_size);
336 }
337 
338 const AVDVProfile *avpriv_dv_codec_profile(AVCodecContext *codec)
339 {
340  if (codec->coded_width || codec->coded_height) {
341  return av_dv_codec_profile(codec->coded_width, codec->coded_height, codec->pix_fmt);
342  } else
343  return av_dv_codec_profile(codec->width, codec->height, codec->pix_fmt);
344 }
345 #endif
Generated on Wed Jul 23 2014 19:21:00 for FFmpeg by   doxygen 1.8.2