Libav
dv_profile.c
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1 /*
2  * This file is part of Libav.
3  *
4  * Libav 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  * Libav 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 Libav; 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/log.h"
25 #include "libavutil/pixdesc.h"
26 
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  { .dsf = 1,
91  .video_stype = 0x0,
92  .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
93  .difseg_size = 12,
94  .n_difchan = 1,
95  .time_base = { 1, 25 },
96  .ltc_divisor = 25,
97  .height = 576,
98  .width = 720,
99  .sar = { { 16, 15 }, { 64, 45 } },
100  .pix_fmt = AV_PIX_FMT_YUV420P,
101  .bpm = 6,
102  .block_sizes = block_sizes_dv2550,
103  .audio_stride = 108,
104  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
105  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
106  .audio_shuffle = dv_audio_shuffle625, },
107  { .dsf = 1,
108  .video_stype = 0x0,
109  .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
110  .difseg_size = 12,
111  .n_difchan = 1,
112  .time_base = { 1, 25 },
113  .ltc_divisor = 25,
114  .height = 576,
115  .width = 720,
116  .sar = { { 16, 15 }, { 64, 45 } },
117  .pix_fmt = AV_PIX_FMT_YUV411P,
118  .bpm = 6,
119  .block_sizes = block_sizes_dv2550,
120  .audio_stride = 108,
121  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
122  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
123  .audio_shuffle = dv_audio_shuffle625, },
124  { .dsf = 0,
125  .video_stype = 0x4,
126  .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
127  .difseg_size = 10, /* also known as "DVCPRO50" */
128  .n_difchan = 2,
129  .time_base = { 1001, 30000 },
130  .ltc_divisor = 30,
131  .height = 480,
132  .width = 720,
133  .sar = { { 8, 9 }, { 32, 27 } },
134  .pix_fmt = AV_PIX_FMT_YUV422P,
135  .bpm = 6,
136  .block_sizes = block_sizes_dv2550,
137  .audio_stride = 90,
138  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
139  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
140  .audio_shuffle = dv_audio_shuffle525, },
141  { .dsf = 1,
142  .video_stype = 0x4,
143  .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
144  .difseg_size = 12, /* also known as "DVCPRO50" */
145  .n_difchan = 2,
146  .time_base = { 1, 25 },
147  .ltc_divisor = 25,
148  .height = 576,
149  .width = 720,
150  .sar = { { 16, 15 }, { 64, 45 } },
151  .pix_fmt = AV_PIX_FMT_YUV422P,
152  .bpm = 6,
153  .block_sizes = block_sizes_dv2550,
154  .audio_stride = 108,
155  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
156  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
157  .audio_shuffle = dv_audio_shuffle625, },
158  { .dsf = 0,
159  .video_stype = 0x14,
160  .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
161  .difseg_size = 10, /* also known as "DVCPRO HD" */
162  .n_difchan = 4,
163  .time_base = { 1001, 30000 },
164  .ltc_divisor = 30,
165  .height = 1080,
166  .width = 1280,
167  .sar = { { 1, 1 }, { 3, 2 } },
168  .pix_fmt = AV_PIX_FMT_YUV422P,
169  .bpm = 8,
170  .block_sizes = block_sizes_dv100,
171  .audio_stride = 90,
172  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
173  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
174  .audio_shuffle = dv_audio_shuffle525, },
175  { .dsf = 1,
176  .video_stype = 0x14,
177  .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
178  .difseg_size = 12, /* also known as "DVCPRO HD" */
179  .n_difchan = 4,
180  .time_base = { 1, 25 },
181  .ltc_divisor = 25,
182  .height = 1080,
183  .width = 1440,
184  .sar = { { 1, 1 }, { 4, 3 } },
185  .pix_fmt = AV_PIX_FMT_YUV422P,
186  .bpm = 8,
187  .block_sizes = block_sizes_dv100,
188  .audio_stride = 108,
189  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
190  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
191  .audio_shuffle = dv_audio_shuffle625, },
192  { .dsf = 0,
193  .video_stype = 0x18,
194  .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
195  .difseg_size = 10, /* also known as "DVCPRO HD" */
196  .n_difchan = 2,
197  .time_base = { 1001, 60000 },
198  .ltc_divisor = 60,
199  .height = 720,
200  .width = 960,
201  .sar = { { 1, 1 }, { 4, 3 } },
202  .pix_fmt = AV_PIX_FMT_YUV422P,
203  .bpm = 8,
204  .block_sizes = block_sizes_dv100,
205  .audio_stride = 90,
206  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
207  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
208  .audio_shuffle = dv_audio_shuffle525, },
209  { .dsf = 1,
210  .video_stype = 0x18,
211  .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
212  .difseg_size = 12, /* also known as "DVCPRO HD" */
213  .n_difchan = 2,
214  .time_base = { 1, 50 },
215  .ltc_divisor = 50,
216  .height = 720,
217  .width = 960,
218  .sar = { { 1, 1 }, { 4, 3 } },
219  .pix_fmt = AV_PIX_FMT_YUV422P,
220  .bpm = 8,
221  .block_sizes = block_sizes_dv100,
222  .audio_stride = 90,
223  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
224  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
225  .audio_shuffle = dv_audio_shuffle625, },
226  { .dsf = 1,
227  .video_stype = 0x1,
228  .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
229  .difseg_size = 12,
230  .n_difchan = 1,
231  .time_base = { 1, 25 },
232  .ltc_divisor = 25,
233  .height = 576,
234  .width = 720,
235  .sar = { { 16, 15 }, { 64, 45 } },
236  .pix_fmt = AV_PIX_FMT_YUV420P,
237  .bpm = 6,
238  .block_sizes = block_sizes_dv2550,
239  .audio_stride = 108,
240  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
241  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
242  .audio_shuffle = dv_audio_shuffle625, }
243 };
244 
245 void ff_dv_print_profiles(void *logctx, int loglevel)
246 {
247  int i;
248  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
249  const AVDVProfile *p = &dv_profiles[i];
250  av_log(logctx, loglevel,
251  "Frame size: %dx%d; pixel format: %s, framerate: %d/%d\n",
253  p->time_base.den, p->time_base.num);
254  }
255 }
256 
257 #endif /* CONFIG_DVPROFILE */
258 
260  const uint8_t *frame, unsigned buf_size)
261 {
262 #if CONFIG_DVPROFILE
263  int i, dsf, stype;
264 
265  if (buf_size < 80 * 5 + 48 + 4)
266  return NULL;
267 
268  dsf = (frame[3] & 0x80) >> 7;
269  stype = frame[80 * 5 + 48 + 3] & 0x1f;
270 
271  /* 576i50 25Mbps 4:1:1 is a special case */
272  if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */)
273  return &dv_profiles[2];
274 
275  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
276  if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
277  return &dv_profiles[i];
278 
279  /* check if old sys matches and assumes corrupted input */
280  if (sys && buf_size == sys->frame_size)
281  return sys;
282 #endif
283 
284  return NULL;
285 }
286 
288  enum AVPixelFormat pix_fmt)
289 {
290 #if CONFIG_DVPROFILE
291  int i;
292 
293  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
294  if (height == dv_profiles[i].height &&
295  pix_fmt == dv_profiles[i].pix_fmt &&
296  width == dv_profiles[i].width)
297  return &dv_profiles[i];
298 #endif
299 
300  return NULL;
301 }
int num
numerator
Definition: rational.h:44
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
#define FF_ARRAY_ELEMS(a)
void ff_dv_print_profiles(void *logctx, int loglevel)
Print all allowed DV profiles into logctx at specified logging level.
uint8_t
const AVDVProfile * sys
Definition: dvenc.c:44
enum AVPixelFormat pix_fmt
Definition: dv_profile.h:45
AVRational time_base
Definition: dv_profile.h:40
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:259
int frame_size
Definition: dv_profile.h:37
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:63
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:287
enum AVPixelFormat pix_fmt
Definition: movenc.c:853
NULL
Definition: eval.c:55
static int width
Definition: utils.c:156
Libavcodec external API header.
int height
Definition: gxfenc.c:72
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:59
common internal and external API header
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:66
int den
denominator
Definition: rational.h:45
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:1704
AVPixelFormat
Pixel format.
Definition: pixfmt.h:57