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 <stdint.h>
20 
21 #include "libavutil/common.h"
22 #include "libavutil/log.h"
23 #include "libavutil/pixdesc.h"
24 #include "avcodec.h"
25 #include "dv_profile.h"
26 
36 
37 static uint32_t dv_idct_factor_sd [2*2*22*64];
38 static uint32_t dv_idct_factor_hd1080[2*4*16*64];
39 static uint32_t dv_idct_factor_hd720 [2*4*16*64];
40 
41 static const uint8_t dv_audio_shuffle525[10][9] = {
42  { 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
43  { 6, 36, 66, 26, 56, 86, 16, 46, 76 },
44  { 12, 42, 72, 2, 32, 62, 22, 52, 82 },
45  { 18, 48, 78, 8, 38, 68, 28, 58, 88 },
46  { 24, 54, 84, 14, 44, 74, 4, 34, 64 },
47 
48  { 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
49  { 7, 37, 67, 27, 57, 87, 17, 47, 77 },
50  { 13, 43, 73, 3, 33, 63, 23, 53, 83 },
51  { 19, 49, 79, 9, 39, 69, 29, 59, 89 },
52  { 25, 55, 85, 15, 45, 75, 5, 35, 65 },
53 };
54 
55 static const uint8_t dv_audio_shuffle625[12][9] = {
56  { 0, 36, 72, 26, 62, 98, 16, 52, 88}, /* 1st channel */
57  { 6, 42, 78, 32, 68, 104, 22, 58, 94},
58  { 12, 48, 84, 2, 38, 74, 28, 64, 100},
59  { 18, 54, 90, 8, 44, 80, 34, 70, 106},
60  { 24, 60, 96, 14, 50, 86, 4, 40, 76},
61  { 30, 66, 102, 20, 56, 92, 10, 46, 82},
62 
63  { 1, 37, 73, 27, 63, 99, 17, 53, 89}, /* 2nd channel */
64  { 7, 43, 79, 33, 69, 105, 23, 59, 95},
65  { 13, 49, 85, 3, 39, 75, 29, 65, 101},
66  { 19, 55, 91, 9, 45, 81, 35, 71, 107},
67  { 25, 61, 97, 15, 51, 87, 5, 41, 77},
68  { 31, 67, 103, 21, 57, 93, 11, 47, 83},
69 };
70 
71 /* macroblock bit budgets */
72 static const uint8_t block_sizes_dv2550[8] = {
73  112, 112, 112, 112, 80, 80, 0, 0,
74 };
75 
76 static const uint8_t block_sizes_dv100[8] = {
77  80, 80, 80, 80, 80, 80, 64, 64,
78 };
79 
80 static const DVprofile dv_profiles[] = {
81  { .dsf = 0,
82  .video_stype = 0x0,
83  .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
84  .difseg_size = 10,
85  .n_difchan = 1,
86  .time_base = { 1001, 30000 },
87  .ltc_divisor = 30,
88  .height = 480,
89  .width = 720,
90  .sar = {{8, 9}, {32, 27}},
91  .work_chunks = &work_chunks_dv25ntsc[0],
92  .idct_factor = &dv_idct_factor_sd[0],
93  .pix_fmt = AV_PIX_FMT_YUV411P,
94  .bpm = 6,
95  .block_sizes = block_sizes_dv2550,
96  .audio_stride = 90,
97  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
98  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
99  .audio_shuffle = dv_audio_shuffle525,
100  },
101  { .dsf = 1,
102  .video_stype = 0x0,
103  .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
104  .difseg_size = 12,
105  .n_difchan = 1,
106  .time_base = { 1, 25 },
107  .ltc_divisor = 25,
108  .height = 576,
109  .width = 720,
110  .sar = {{16, 15}, {64, 45}},
111  .work_chunks = &work_chunks_dv25pal[0],
112  .idct_factor = &dv_idct_factor_sd[0],
113  .pix_fmt = AV_PIX_FMT_YUV420P,
114  .bpm = 6,
115  .block_sizes = block_sizes_dv2550,
116  .audio_stride = 108,
117  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
118  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
119  .audio_shuffle = dv_audio_shuffle625,
120  },
121  { .dsf = 1,
122  .video_stype = 0x0,
123  .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
124  .difseg_size = 12,
125  .n_difchan = 1,
126  .time_base = { 1, 25 },
127  .ltc_divisor = 25,
128  .height = 576,
129  .width = 720,
130  .sar = {{16, 15}, {64, 45}},
131  .work_chunks = &work_chunks_dv25pal411[0],
132  .idct_factor = &dv_idct_factor_sd[0],
133  .pix_fmt = AV_PIX_FMT_YUV411P,
134  .bpm = 6,
135  .block_sizes = block_sizes_dv2550,
136  .audio_stride = 108,
137  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
138  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
139  .audio_shuffle = dv_audio_shuffle625,
140  },
141  { .dsf = 0,
142  .video_stype = 0x4,
143  .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
144  .difseg_size = 10, /* also known as "DVCPRO50" */
145  .n_difchan = 2,
146  .time_base = { 1001, 30000 },
147  .ltc_divisor = 30,
148  .height = 480,
149  .width = 720,
150  .sar = {{8, 9}, {32, 27}},
151  .work_chunks = &work_chunks_dv50ntsc[0],
152  .idct_factor = &dv_idct_factor_sd[0],
153  .pix_fmt = AV_PIX_FMT_YUV422P,
154  .bpm = 6,
155  .block_sizes = block_sizes_dv2550,
156  .audio_stride = 90,
157  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
158  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
159  .audio_shuffle = dv_audio_shuffle525,
160  },
161  { .dsf = 1,
162  .video_stype = 0x4,
163  .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
164  .difseg_size = 12, /* also known as "DVCPRO50" */
165  .n_difchan = 2,
166  .time_base = { 1, 25 },
167  .ltc_divisor = 25,
168  .height = 576,
169  .width = 720,
170  .sar = {{16, 15}, {64, 45}},
171  .work_chunks = &work_chunks_dv50pal[0],
172  .idct_factor = &dv_idct_factor_sd[0],
173  .pix_fmt = AV_PIX_FMT_YUV422P,
174  .bpm = 6,
175  .block_sizes = block_sizes_dv2550,
176  .audio_stride = 108,
177  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
178  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
179  .audio_shuffle = dv_audio_shuffle625,
180  },
181  { .dsf = 0,
182  .video_stype = 0x14,
183  .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
184  .difseg_size = 10, /* also known as "DVCPRO HD" */
185  .n_difchan = 4,
186  .time_base = { 1001, 30000 },
187  .ltc_divisor = 30,
188  .height = 1080,
189  .width = 1280,
190  .sar = {{1, 1}, {3, 2}},
191  .work_chunks = &work_chunks_dv100ntsci[0],
192  .idct_factor = &dv_idct_factor_hd1080[0],
193  .pix_fmt = AV_PIX_FMT_YUV422P,
194  .bpm = 8,
195  .block_sizes = block_sizes_dv100,
196  .audio_stride = 90,
197  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
198  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
199  .audio_shuffle = dv_audio_shuffle525,
200  },
201  { .dsf = 1,
202  .video_stype = 0x14,
203  .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
204  .difseg_size = 12, /* also known as "DVCPRO HD" */
205  .n_difchan = 4,
206  .time_base = { 1, 25 },
207  .ltc_divisor = 25,
208  .height = 1080,
209  .width = 1440,
210  .sar = {{1, 1}, {4, 3}},
211  .work_chunks = &work_chunks_dv100pali[0],
212  .idct_factor = &dv_idct_factor_hd1080[0],
213  .pix_fmt = AV_PIX_FMT_YUV422P,
214  .bpm = 8,
215  .block_sizes = block_sizes_dv100,
216  .audio_stride = 108,
217  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
218  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
219  .audio_shuffle = dv_audio_shuffle625,
220  },
221  { .dsf = 0,
222  .video_stype = 0x18,
223  .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
224  .difseg_size = 10, /* also known as "DVCPRO HD" */
225  .n_difchan = 2,
226  .time_base = { 1001, 60000 },
227  .ltc_divisor = 60,
228  .height = 720,
229  .width = 960,
230  .sar = {{1, 1}, {4, 3}},
231  .work_chunks = &work_chunks_dv100ntscp[0],
232  .idct_factor = &dv_idct_factor_hd720[0],
233  .pix_fmt = AV_PIX_FMT_YUV422P,
234  .bpm = 8,
235  .block_sizes = block_sizes_dv100,
236  .audio_stride = 90,
237  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
238  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
239  .audio_shuffle = dv_audio_shuffle525,
240  },
241  { .dsf = 1,
242  .video_stype = 0x18,
243  .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
244  .difseg_size = 12, /* also known as "DVCPRO HD" */
245  .n_difchan = 2,
246  .time_base = { 1, 50 },
247  .ltc_divisor = 50,
248  .height = 720,
249  .width = 960,
250  .sar = {{1, 1}, {4, 3}},
251  .work_chunks = &work_chunks_dv100palp[0],
252  .idct_factor = &dv_idct_factor_hd720[0],
253  .pix_fmt = AV_PIX_FMT_YUV422P,
254  .bpm = 8,
255  .block_sizes = block_sizes_dv100,
256  .audio_stride = 90,
257  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
258  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
259  .audio_shuffle = dv_audio_shuffle625,
260  },
261  { .dsf = 1,
262  .video_stype = 0x1,
263  .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
264  .difseg_size = 12,
265  .n_difchan = 1,
266  .time_base = { 1, 25 },
267  .ltc_divisor = 25,
268  .height = 576,
269  .width = 720,
270  .sar = {{16, 15}, {64, 45}},
271  .work_chunks = &work_chunks_dv25pal[0],
272  .idct_factor = &dv_idct_factor_sd[0],
273  .pix_fmt = AV_PIX_FMT_YUV420P,
274  .bpm = 6,
275  .block_sizes = block_sizes_dv2550,
276  .audio_stride = 108,
277  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
278  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
279  .audio_shuffle = dv_audio_shuffle625,
280  }
281 };
282 
284  const uint8_t* frame, unsigned buf_size)
285 {
286  int i, dsf, stype;
287 
288  if (buf_size < 80 * 5 + 48 + 4)
289  return NULL;
290 
291  dsf = (frame[3] & 0x80) >> 7;
292  stype = frame[80 * 5 + 48 + 3] & 0x1f;
293 
294  /* 576i50 25Mbps 4:1:1 is a special case */
295  if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) {
296  return &dv_profiles[2];
297  }
298 
299  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
300  if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
301  return &dv_profiles[i];
302 
303  /* check if old sys matches and assumes corrupted input */
304  if (sys && buf_size == sys->frame_size)
305  return sys;
306 
307  return NULL;
308 }
309 
311 {
312  int i;
313 
314  for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
315  if (codec->height == dv_profiles[i].height &&
316  codec->pix_fmt == dv_profiles[i].pix_fmt &&
317  codec->width == dv_profiles[i].width)
318  return &dv_profiles[i];
319 
320  return NULL;
321 }
322 
323 void ff_dv_print_profiles(void *logctx, int loglevel)
324 {
325  int i;
326  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
327  const DVprofile *p = &dv_profiles[i];
328  av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, "
329  "framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
330  p->time_base.den, p->time_base.num);
331  }
332 }
void ff_dv_print_profiles(void *logctx, int loglevel)
Print all allowed DV profiles into logctx at specified logging level.
Definition: dv_profile.c:323
static const uint8_t dv_audio_shuffle625[12][9]
Definition: dv_profile.c:55
const DVprofile * sys
Definition: dvenc.c:44
int num
numerator
Definition: rational.h:44
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1247
#define FF_ARRAY_ELEMS(a)
static DVwork_chunk work_chunks_dv25ntsc[1 *10 *27]
Definition: dv_profile.c:29
static const uint8_t block_sizes_dv100[8]
Definition: dv_profile.c:76
static const uint8_t dv_audio_shuffle525[10][9]
Definition: dv_profile.c:41
uint8_t
enum AVPixelFormat pix_fmt
Definition: dv_profile.h:52
static DVwork_chunk work_chunks_dv100palp[2 *12 *27]
Definition: dv_profile.c:32
static uint32_t dv_idct_factor_sd[2 *2 *22 *64]
Definition: dv_profile.c:37
int height
Definition: dv_profile.h:47
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:148
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:69
AVRational time_base
Definition: dv_profile.h:45
const DVprofile * avpriv_dv_codec_profile(AVCodecContext *codec)
Definition: dv_profile.c:310
static DVwork_chunk work_chunks_dv100pali[4 *12 *27]
Definition: dv_profile.c:34
int width
Definition: dv_profile.h:48
int width
picture width / height.
Definition: avcodec.h:1217
int frame_size
Definition: dv_profile.h:42
NULL
Definition: eval.c:55
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1054
static uint32_t dv_idct_factor_hd1080[2 *4 *16 *64]
Definition: dv_profile.c:38
static DVwork_chunk work_chunks_dv100ntscp[2 *10 *27]
Definition: dv_profile.c:33
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:65
common internal and external API header
static const uint8_t block_sizes_dv2550[8]
Definition: dv_profile.c:72
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:72
static DVwork_chunk work_chunks_dv50pal[2 *12 *27]
Definition: dv_profile.c:30
int den
denominator
Definition: rational.h:45
static DVwork_chunk work_chunks_dv25pal411[1 *12 *27]
Definition: dv_profile.c:28
static DVwork_chunk work_chunks_dv25pal[1 *12 *27]
Definition: dv_profile.c:27
static uint32_t dv_idct_factor_hd720[2 *4 *16 *64]
Definition: dv_profile.c:39
const DVprofile * avpriv_dv_frame_profile(const DVprofile *sys, const uint8_t *frame, unsigned buf_size)
Definition: dv_profile.c:283
static DVwork_chunk work_chunks_dv50ntsc[2 *10 *27]
Definition: dv_profile.c:31
static const DVprofile dv_profiles[]
Definition: dv_profile.c:80
static DVwork_chunk work_chunks_dv100ntsci[4 *10 *27]
Definition: dv_profile.c:35
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:1449