FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/dv_profile.c
Date: 2022-07-05 19:52:29
Exec Total Coverage
Lines: 24 41 58.5%
Branches: 29 60 48.3%

Line Branch Exec Source
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 <stddef.h>
22 #include <stdint.h>
23
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/log.h"
26 #include "libavutil/macros.h"
27 #include "libavutil/pixdesc.h"
28
29 #include "avcodec.h"
30 #include "dv_profile.h"
31 #include "dv_profile_internal.h"
32
33 #if CONFIG_DVPROFILE
34
35 static const uint8_t dv_audio_shuffle525[10][9] = {
36 { 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
37 { 6, 36, 66, 26, 56, 86, 16, 46, 76 },
38 { 12, 42, 72, 2, 32, 62, 22, 52, 82 },
39 { 18, 48, 78, 8, 38, 68, 28, 58, 88 },
40 { 24, 54, 84, 14, 44, 74, 4, 34, 64 },
41
42 { 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
43 { 7, 37, 67, 27, 57, 87, 17, 47, 77 },
44 { 13, 43, 73, 3, 33, 63, 23, 53, 83 },
45 { 19, 49, 79, 9, 39, 69, 29, 59, 89 },
46 { 25, 55, 85, 15, 45, 75, 5, 35, 65 },
47 };
48
49 static const uint8_t dv_audio_shuffle625[12][9] = {
50 { 0, 36, 72, 26, 62, 98, 16, 52, 88 }, /* 1st channel */
51 { 6, 42, 78, 32, 68, 104, 22, 58, 94 },
52 { 12, 48, 84, 2, 38, 74, 28, 64, 100 },
53 { 18, 54, 90, 8, 44, 80, 34, 70, 106 },
54 { 24, 60, 96, 14, 50, 86, 4, 40, 76 },
55 { 30, 66, 102, 20, 56, 92, 10, 46, 82 },
56
57 { 1, 37, 73, 27, 63, 99, 17, 53, 89 }, /* 2nd channel */
58 { 7, 43, 79, 33, 69, 105, 23, 59, 95 },
59 { 13, 49, 85, 3, 39, 75, 29, 65, 101 },
60 { 19, 55, 91, 9, 45, 81, 35, 71, 107 },
61 { 25, 61, 97, 15, 51, 87, 5, 41, 77 },
62 { 31, 67, 103, 21, 57, 93, 11, 47, 83 },
63 };
64
65 /* macroblock bit budgets */
66 static const uint8_t block_sizes_dv2550[8] = {
67 112, 112, 112, 112, 80, 80, 0, 0,
68 };
69
70 static const uint8_t block_sizes_dv100[8] = {
71 80, 80, 80, 80, 80, 80, 64, 64,
72 };
73
74 static const AVDVProfile dv_profiles[] = {
75 { .dsf = 0,
76 .video_stype = 0x0,
77 .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
78 .difseg_size = 10,
79 .n_difchan = 1,
80 .time_base = { 1001, 30000 },
81 .ltc_divisor = 30,
82 .height = 480,
83 .width = 720,
84 .sar = { { 8, 9 }, { 32, 27 } },
85 .pix_fmt = AV_PIX_FMT_YUV411P,
86 .bpm = 6,
87 .block_sizes = block_sizes_dv2550,
88 .audio_stride = 90,
89 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
90 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
91 .audio_shuffle = dv_audio_shuffle525, },
92 { .dsf = 1,
93 .video_stype = 0x0,
94 .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
95 .difseg_size = 12,
96 .n_difchan = 1,
97 .time_base = { 1, 25 },
98 .ltc_divisor = 25,
99 .height = 576,
100 .width = 720,
101 .sar = { { 16, 15 }, { 64, 45 } },
102 .pix_fmt = AV_PIX_FMT_YUV420P,
103 .bpm = 6,
104 .block_sizes = block_sizes_dv2550,
105 .audio_stride = 108,
106 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
107 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
108 .audio_shuffle = dv_audio_shuffle625, },
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 { .dsf = 0,
127 .video_stype = 0x4,
128 .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
129 .difseg_size = 10, /* also known as "DVCPRO50" */
130 .n_difchan = 2,
131 .time_base = { 1001, 30000 },
132 .ltc_divisor = 30,
133 .height = 480,
134 .width = 720,
135 .sar = { { 8, 9 }, { 32, 27 } },
136 .pix_fmt = AV_PIX_FMT_YUV422P,
137 .bpm = 6,
138 .block_sizes = block_sizes_dv2550,
139 .audio_stride = 90,
140 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
141 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
142 .audio_shuffle = dv_audio_shuffle525, },
143 { .dsf = 1,
144 .video_stype = 0x4,
145 .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
146 .difseg_size = 12, /* also known as "DVCPRO50" */
147 .n_difchan = 2,
148 .time_base = { 1, 25 },
149 .ltc_divisor = 25,
150 .height = 576,
151 .width = 720,
152 .sar = { { 16, 15 }, { 64, 45 } },
153 .pix_fmt = AV_PIX_FMT_YUV422P,
154 .bpm = 6,
155 .block_sizes = block_sizes_dv2550,
156 .audio_stride = 108,
157 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
158 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
159 .audio_shuffle = dv_audio_shuffle625, },
160 { .dsf = 0,
161 .video_stype = 0x14,
162 .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
163 .difseg_size = 10, /* also known as "DVCPRO HD" */
164 .n_difchan = 4,
165 .time_base = { 1001, 30000 },
166 .ltc_divisor = 30,
167 .height = 1080,
168 .width = 1280,
169 .sar = { { 1, 1 }, { 3, 2 } },
170 .pix_fmt = AV_PIX_FMT_YUV422P,
171 .bpm = 8,
172 .block_sizes = block_sizes_dv100,
173 .audio_stride = 90,
174 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
175 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
176 .audio_shuffle = dv_audio_shuffle525, },
177 { .dsf = 1,
178 .video_stype = 0x14,
179 .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
180 .difseg_size = 12, /* also known as "DVCPRO HD" */
181 .n_difchan = 4,
182 .time_base = { 1, 25 },
183 .ltc_divisor = 25,
184 .height = 1080,
185 .width = 1440,
186 .sar = { { 1, 1 }, { 4, 3 } },
187 .pix_fmt = AV_PIX_FMT_YUV422P,
188 .bpm = 8,
189 .block_sizes = block_sizes_dv100,
190 .audio_stride = 108,
191 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
192 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
193 .audio_shuffle = dv_audio_shuffle625, },
194 { .dsf = 0,
195 .video_stype = 0x18,
196 .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
197 .difseg_size = 10, /* also known as "DVCPRO HD" */
198 .n_difchan = 2,
199 .time_base = { 1001, 60000 },
200 .ltc_divisor = 60,
201 .height = 720,
202 .width = 960,
203 .sar = { { 1, 1 }, { 4, 3 } },
204 .pix_fmt = AV_PIX_FMT_YUV422P,
205 .bpm = 8,
206 .block_sizes = block_sizes_dv100,
207 .audio_stride = 90,
208 .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
209 .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
210 .audio_shuffle = dv_audio_shuffle525, },
211 { .dsf = 1,
212 .video_stype = 0x18,
213 .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
214 .difseg_size = 12, /* also known as "DVCPRO HD" */
215 .n_difchan = 2,
216 .time_base = { 1, 50 },
217 .ltc_divisor = 50,
218 .height = 720,
219 .width = 960,
220 .sar = { { 1, 1 }, { 4, 3 } },
221 .pix_fmt = AV_PIX_FMT_YUV422P,
222 .bpm = 8,
223 .block_sizes = block_sizes_dv100,
224 .audio_stride = 90,
225 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
226 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
227 .audio_shuffle = dv_audio_shuffle625, },
228 { .dsf = 1,
229 .video_stype = 0x1,
230 .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
231 .difseg_size = 12,
232 .n_difchan = 1,
233 .time_base = { 1, 25 },
234 .ltc_divisor = 25,
235 .height = 576,
236 .width = 720,
237 .sar = { { 16, 15 }, { 64, 45 } },
238 .pix_fmt = AV_PIX_FMT_YUV420P,
239 .bpm = 6,
240 .block_sizes = block_sizes_dv2550,
241 .audio_stride = 108,
242 .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
243 .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
244 .audio_shuffle = dv_audio_shuffle625, }
245 };
246
247 void ff_dv_print_profiles(void *logctx, int loglevel)
248 {
249 int i;
250 for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
251 const AVDVProfile *p = &dv_profiles[i];
252 av_log(logctx, loglevel,
253 "Frame size: %dx%d; pixel format: %s, framerate: %d/%d\n",
254 p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
255 p->time_base.den, p->time_base.num);
256 }
257 }
258
259 #endif /* CONFIG_DVPROFILE */
260
261 2215 const AVDVProfile* ff_dv_frame_profile(AVCodecContext* codec, const AVDVProfile *sys,
262 const uint8_t *frame, unsigned buf_size)
263 {
264 #if CONFIG_DVPROFILE
265 int i, dsf, stype, pal;
266
267
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2215 if(buf_size < DV_PROFILE_BYTES)
268 return NULL;
269
270 2215 dsf = (frame[3] & 0x80) >> 7;
271 2215 stype = frame[80 * 5 + 48 + 3] & 0x1f;
272 2215 pal = !!(frame[80 * 5 + 48 + 3] & 0x20);
273
274 /* 576i50 25Mbps 4:1:1 is a special case */
275
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2215 if ((dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) ||
276 (stype == 31 && codec && codec->codec_tag==AV_RL32("SL25") && codec->coded_width==720 && codec->coded_height==576))
277 369 return &dv_profiles[2];
278
279 /* hack for trac issues #8333 and #2177, PAL DV files with dsf flag 0 - detect via pal flag and buf_size */
280
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1846 if (dsf == 0 && pal == 1 && stype == dv_profiles[1].video_stype && buf_size == dv_profiles[1].frame_size)
281 return &dv_profiles[1];
282
283
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9662 for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
284
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9662 if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
285 1846 return &dv_profiles[i];
286
287 /* check if old sys matches and assumes corrupted input */
288 if (sys && buf_size == sys->frame_size)
289 return sys;
290
291 /* hack for trac issue #217, dv files created with QuickTime 3 */
292 if ((frame[3] & 0x7f) == 0x3f && frame[80 * 5 + 48 + 3] == 0xff)
293 return &dv_profiles[dsf];
294 #endif
295
296 return NULL;
297 }
298
299 1172 const AVDVProfile *av_dv_frame_profile(const AVDVProfile *sys,
300 const uint8_t *frame, unsigned buf_size)
301 {
302 1172 return ff_dv_frame_profile(NULL, sys, frame, buf_size);
303 }
304
305 const AVDVProfile *av_dv_codec_profile(int width, int height,
306 enum AVPixelFormat pix_fmt)
307 {
308 #if CONFIG_DVPROFILE
309 return av_dv_codec_profile2(width, height, pix_fmt, (AVRational){0, 0});
310 #endif
311
312 return NULL;
313 }
314
315 42 const AVDVProfile *av_dv_codec_profile2(int width, int height,
316 enum AVPixelFormat pix_fmt,
317 AVRational frame_rate)
318 {
319 42 const AVDVProfile *p = NULL;
320 #if CONFIG_DVPROFILE
321 int i;
322 /* frame rate is necessary to select between 720p50 and 720p60 profiles */
323
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42 int invalid_framerate = frame_rate.num == 0 || frame_rate.den == 0;
324
325
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205 for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
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205 if (height == dv_profiles[i].height &&
327
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78 pix_fmt == dv_profiles[i].pix_fmt &&
328
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58 width == dv_profiles[i].width)
329 {
330
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50 if( invalid_framerate || av_div_q(dv_profiles[i].time_base, frame_rate).num == 1 )
331 42 return &dv_profiles[i];
332
333
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8 if(!p)
334 8 p = &dv_profiles[i];
335 }
336 #endif
337
338 return p;
339 }
340
341