FFmpeg
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 "config.h"
20 
21 #include <stdint.h>
22 
23 #include "libavutil/common.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/log.h"
26 #include "libavutil/pixdesc.h"
27 
28 #include "avcodec.h"
29 #include "dv_profile.h"
30 #include "dv_profile_internal.h"
31 
32 #if CONFIG_DVPROFILE
33 
34 static const uint8_t dv_audio_shuffle525[10][9] = {
35  { 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
36  { 6, 36, 66, 26, 56, 86, 16, 46, 76 },
37  { 12, 42, 72, 2, 32, 62, 22, 52, 82 },
38  { 18, 48, 78, 8, 38, 68, 28, 58, 88 },
39  { 24, 54, 84, 14, 44, 74, 4, 34, 64 },
40 
41  { 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
42  { 7, 37, 67, 27, 57, 87, 17, 47, 77 },
43  { 13, 43, 73, 3, 33, 63, 23, 53, 83 },
44  { 19, 49, 79, 9, 39, 69, 29, 59, 89 },
45  { 25, 55, 85, 15, 45, 75, 5, 35, 65 },
46 };
47 
48 static const uint8_t dv_audio_shuffle625[12][9] = {
49  { 0, 36, 72, 26, 62, 98, 16, 52, 88 }, /* 1st channel */
50  { 6, 42, 78, 32, 68, 104, 22, 58, 94 },
51  { 12, 48, 84, 2, 38, 74, 28, 64, 100 },
52  { 18, 54, 90, 8, 44, 80, 34, 70, 106 },
53  { 24, 60, 96, 14, 50, 86, 4, 40, 76 },
54  { 30, 66, 102, 20, 56, 92, 10, 46, 82 },
55 
56  { 1, 37, 73, 27, 63, 99, 17, 53, 89 }, /* 2nd channel */
57  { 7, 43, 79, 33, 69, 105, 23, 59, 95 },
58  { 13, 49, 85, 3, 39, 75, 29, 65, 101 },
59  { 19, 55, 91, 9, 45, 81, 35, 71, 107 },
60  { 25, 61, 97, 15, 51, 87, 5, 41, 77 },
61  { 31, 67, 103, 21, 57, 93, 11, 47, 83 },
62 };
63 
64 /* macroblock bit budgets */
65 static const uint8_t block_sizes_dv2550[8] = {
66  112, 112, 112, 112, 80, 80, 0, 0,
67 };
68 
69 static const uint8_t block_sizes_dv100[8] = {
70  80, 80, 80, 80, 80, 80, 64, 64,
71 };
72 
73 static const AVDVProfile dv_profiles[] = {
74  { .dsf = 0,
75  .video_stype = 0x0,
76  .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
77  .difseg_size = 10,
78  .n_difchan = 1,
79  .time_base = { 1001, 30000 },
80  .ltc_divisor = 30,
81  .height = 480,
82  .width = 720,
83  .sar = { { 8, 9 }, { 32, 27 } },
84  .pix_fmt = AV_PIX_FMT_YUV411P,
85  .bpm = 6,
86  .block_sizes = block_sizes_dv2550,
87  .audio_stride = 90,
88  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
89  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
90  .audio_shuffle = dv_audio_shuffle525, },
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  { .dsf = 1,
109  .video_stype = 0x0,
110  .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
111  .difseg_size = 12,
112  .n_difchan = 1,
113  .time_base = { 1, 25 },
114  .ltc_divisor = 25,
115  .height = 576,
116  .width = 720,
117  .sar = { { 16, 15 }, { 64, 45 } },
118  .pix_fmt = AV_PIX_FMT_YUV411P,
119  .bpm = 6,
120  .block_sizes = block_sizes_dv2550,
121  .audio_stride = 108,
122  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
123  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
124  .audio_shuffle = dv_audio_shuffle625, },
125  { .dsf = 0,
126  .video_stype = 0x4,
127  .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
128  .difseg_size = 10, /* also known as "DVCPRO50" */
129  .n_difchan = 2,
130  .time_base = { 1001, 30000 },
131  .ltc_divisor = 30,
132  .height = 480,
133  .width = 720,
134  .sar = { { 8, 9 }, { 32, 27 } },
135  .pix_fmt = AV_PIX_FMT_YUV422P,
136  .bpm = 6,
137  .block_sizes = block_sizes_dv2550,
138  .audio_stride = 90,
139  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
140  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
141  .audio_shuffle = dv_audio_shuffle525, },
142  { .dsf = 1,
143  .video_stype = 0x4,
144  .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
145  .difseg_size = 12, /* also known as "DVCPRO50" */
146  .n_difchan = 2,
147  .time_base = { 1, 25 },
148  .ltc_divisor = 25,
149  .height = 576,
150  .width = 720,
151  .sar = { { 16, 15 }, { 64, 45 } },
152  .pix_fmt = AV_PIX_FMT_YUV422P,
153  .bpm = 6,
154  .block_sizes = block_sizes_dv2550,
155  .audio_stride = 108,
156  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
157  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
158  .audio_shuffle = dv_audio_shuffle625, },
159  { .dsf = 0,
160  .video_stype = 0x14,
161  .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
162  .difseg_size = 10, /* also known as "DVCPRO HD" */
163  .n_difchan = 4,
164  .time_base = { 1001, 30000 },
165  .ltc_divisor = 30,
166  .height = 1080,
167  .width = 1280,
168  .sar = { { 1, 1 }, { 3, 2 } },
169  .pix_fmt = AV_PIX_FMT_YUV422P,
170  .bpm = 8,
171  .block_sizes = block_sizes_dv100,
172  .audio_stride = 90,
173  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
174  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
175  .audio_shuffle = dv_audio_shuffle525, },
176  { .dsf = 1,
177  .video_stype = 0x14,
178  .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
179  .difseg_size = 12, /* also known as "DVCPRO HD" */
180  .n_difchan = 4,
181  .time_base = { 1, 25 },
182  .ltc_divisor = 25,
183  .height = 1080,
184  .width = 1440,
185  .sar = { { 1, 1 }, { 4, 3 } },
186  .pix_fmt = AV_PIX_FMT_YUV422P,
187  .bpm = 8,
188  .block_sizes = block_sizes_dv100,
189  .audio_stride = 108,
190  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
191  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
192  .audio_shuffle = dv_audio_shuffle625, },
193  { .dsf = 0,
194  .video_stype = 0x18,
195  .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
196  .difseg_size = 10, /* also known as "DVCPRO HD" */
197  .n_difchan = 2,
198  .time_base = { 1001, 60000 },
199  .ltc_divisor = 60,
200  .height = 720,
201  .width = 960,
202  .sar = { { 1, 1 }, { 4, 3 } },
203  .pix_fmt = AV_PIX_FMT_YUV422P,
204  .bpm = 8,
205  .block_sizes = block_sizes_dv100,
206  .audio_stride = 90,
207  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
208  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
209  .audio_shuffle = dv_audio_shuffle525, },
210  { .dsf = 1,
211  .video_stype = 0x18,
212  .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
213  .difseg_size = 12, /* also known as "DVCPRO HD" */
214  .n_difchan = 2,
215  .time_base = { 1, 50 },
216  .ltc_divisor = 50,
217  .height = 720,
218  .width = 960,
219  .sar = { { 1, 1 }, { 4, 3 } },
220  .pix_fmt = AV_PIX_FMT_YUV422P,
221  .bpm = 8,
222  .block_sizes = block_sizes_dv100,
223  .audio_stride = 90,
224  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
225  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
226  .audio_shuffle = dv_audio_shuffle625, },
227  { .dsf = 1,
228  .video_stype = 0x1,
229  .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
230  .difseg_size = 12,
231  .n_difchan = 1,
232  .time_base = { 1, 25 },
233  .ltc_divisor = 25,
234  .height = 576,
235  .width = 720,
236  .sar = { { 16, 15 }, { 64, 45 } },
237  .pix_fmt = AV_PIX_FMT_YUV420P,
238  .bpm = 6,
239  .block_sizes = block_sizes_dv2550,
240  .audio_stride = 108,
241  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
242  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
243  .audio_shuffle = dv_audio_shuffle625, }
244 };
245 
246 void ff_dv_print_profiles(void *logctx, int loglevel)
247 {
248  int i;
249  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
250  const AVDVProfile *p = &dv_profiles[i];
251  av_log(logctx, loglevel,
252  "Frame size: %dx%d; pixel format: %s, framerate: %d/%d\n",
253  p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
254  p->time_base.den, p->time_base.num);
255  }
256 }
257 
258 #endif /* CONFIG_DVPROFILE */
259 
260 const AVDVProfile* ff_dv_frame_profile(AVCodecContext* codec, const AVDVProfile *sys,
261  const uint8_t *frame, unsigned buf_size)
262 {
263 #if CONFIG_DVPROFILE
264  int i, dsf, stype;
265 
266  if(buf_size < DV_PROFILE_BYTES)
267  return NULL;
268 
269  dsf = (frame[3] & 0x80) >> 7;
270  stype = frame[80 * 5 + 48 + 3] & 0x1f;
271 
272  /* 576i50 25Mbps 4:1:1 is a special case */
273  if ((dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) ||
274  (stype == 31 && codec && codec->codec_tag==AV_RL32("SL25") && codec->coded_width==720 && codec->coded_height==576))
275  return &dv_profiles[2];
276 
277  if( stype == 0
278  && codec
279  && (codec->codec_tag==AV_RL32("dvsd") || codec->codec_tag==AV_RL32("CDVC"))
280  && codec->coded_width ==720
281  && codec->coded_height==576)
282  return &dv_profiles[1];
283 
284  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
285  if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
286  return &dv_profiles[i];
287 
288  /* check if old sys matches and assumes corrupted input */
289  if (sys && buf_size == sys->frame_size)
290  return sys;
291 
292  /* hack for trac issue #217, dv files created with QuickTime 3 */
293  if ((frame[3] & 0x7f) == 0x3f && frame[80 * 5 + 48 + 3] == 0xff)
294  return &dv_profiles[dsf];
295 #endif
296 
297  return NULL;
298 }
299 
300 const AVDVProfile *av_dv_frame_profile(const AVDVProfile *sys,
301  const uint8_t *frame, unsigned buf_size)
302 {
303  return ff_dv_frame_profile(NULL, sys, frame, buf_size);
304 }
305 
306 const AVDVProfile *av_dv_codec_profile(int width, int height,
307  enum AVPixelFormat pix_fmt)
308 {
309 #if CONFIG_DVPROFILE
310  return av_dv_codec_profile2(width, height, pix_fmt, (AVRational){0, 0});
311 #endif
312 
313  return NULL;
314 }
315 
316 const AVDVProfile *av_dv_codec_profile2(int width, int height,
317  enum AVPixelFormat pix_fmt,
318  AVRational frame_rate)
319 {
320  const AVDVProfile *p = NULL;
321 #if CONFIG_DVPROFILE
322  int i;
323  /* frame rate is necessary to select between 720p50 and 720p60 profiles */
324  int invalid_framerate = frame_rate.num == 0 || frame_rate.den == 0;
325 
326  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
327  if (height == dv_profiles[i].height &&
328  pix_fmt == dv_profiles[i].pix_fmt &&
329  width == dv_profiles[i].width)
330  {
331  if( invalid_framerate || av_div_q(dv_profiles[i].time_base, frame_rate).num == 1 )
332  return &dv_profiles[i];
333 
334  if(!p)
335  p = &dv_profiles[i];
336  }
337 #endif
338 
339  return p;
340 }
341 
NULL
#define NULL
Definition: coverity.c:32
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demuxing_decoding.c:40
av_div_q
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
Definition: rational.c:88
AVCodecContext::coded_width
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1809
AVRational::num
int num
Numerator.
Definition: rational.h:59
ff_dv_print_profiles
void ff_dv_print_profiles(void *logctx, int loglevel)
Print all allowed DV profiles into logctx at specified logging level.
uint8_t
uint8_t
Definition: audio_convert.c:194
DVMuxContext::sys
const AVDVProfile * sys
Definition: dvenc.c:48
ff_dv_frame_profile
const AVDVProfile * ff_dv_frame_profile(AVCodecContext *codec, const AVDVProfile *sys, const uint8_t *frame, unsigned buf_size)
Get a DV profile for the provided compressed frame.
Definition: dv_profile.c:260
height
#define height
AVDVProfile::pix_fmt
enum AVPixelFormat pix_fmt
Definition: dv_profile.h:50
dv_profile.h
AVDVProfile::time_base
AVRational time_base
Definition: dv_profile.h:45
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
av_dv_frame_profile
const AVDVProfile * av_dv_frame_profile(const AVDVProfile *sys, const uint8_t *frame, unsigned buf_size)
Get a DV profile for the provided compressed frame.
Definition: dv_profile.c:300
AVDVProfile::frame_size
int frame_size
Definition: dv_profile.h:42
AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
width
#define width
dv_profile_internal.h
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:255
av_dv_codec_profile
const AVDVProfile * av_dv_codec_profile(int width, int height, enum AVPixelFormat pix_fmt)
Get a DV profile for the provided stream parameters.
Definition: dv_profile.c:306
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen_template.c:38
avcodec.h
Libavcodec external API header.
AVCodecContext
main external API structure.
Definition: avcodec.h:1621
AVCodecContext::codec_tag
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> (&#39;D&#39;<<24) + (&#39;C&#39;<<16) + (&#39;B&#39;<<8) + &#39;A&#39;).
Definition: avcodec.h:1646
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:1809
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
DV_PROFILE_BYTES
#define DV_PROFILE_BYTES
Definition: dv_profile.h:30
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
common.h
common internal and external API header
AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
AVRational::den
int den
Denominator.
Definition: rational.h:60
av_dv_codec_profile2
const AVDVProfile * av_dv_codec_profile2(int width, int height, enum AVPixelFormat pix_fmt, AVRational frame_rate)
Get a DV profile for the provided stream parameters.
Definition: dv_profile.c:316
av_get_pix_fmt_name
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2465
AV_RL32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
Generated on Mon Apr 6 2020 19:21:32 for FFmpeg by   doxygen 1.8.11