1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
|
/*
* Constants for DV codec
* Copyright (c) 2002 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Constants for DV codec.
*/
#include "libavutil/rational.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "dvdata.h"
static DVwork_chunk work_chunks_dv25pal [1*12*27];
static DVwork_chunk work_chunks_dv25pal411[1*12*27];
static DVwork_chunk work_chunks_dv25ntsc [1*10*27];
static DVwork_chunk work_chunks_dv50pal [2*12*27];
static DVwork_chunk work_chunks_dv50ntsc [2*10*27];
static DVwork_chunk work_chunks_dv100palp [2*12*27];
static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
static DVwork_chunk work_chunks_dv100pali [4*12*27];
static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
static uint32_t dv_idct_factor_sd [2*2*22*64];
static uint32_t dv_idct_factor_hd1080[2*4*16*64];
static uint32_t dv_idct_factor_hd720 [2*4*16*64];
static const uint8_t dv_audio_shuffle525[10][9] = {
{ 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
{ 6, 36, 66, 26, 56, 86, 16, 46, 76 },
{ 12, 42, 72, 2, 32, 62, 22, 52, 82 },
{ 18, 48, 78, 8, 38, 68, 28, 58, 88 },
{ 24, 54, 84, 14, 44, 74, 4, 34, 64 },
{ 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
{ 7, 37, 67, 27, 57, 87, 17, 47, 77 },
{ 13, 43, 73, 3, 33, 63, 23, 53, 83 },
{ 19, 49, 79, 9, 39, 69, 29, 59, 89 },
{ 25, 55, 85, 15, 45, 75, 5, 35, 65 },
};
static const uint8_t dv_audio_shuffle625[12][9] = {
{ 0, 36, 72, 26, 62, 98, 16, 52, 88}, /* 1st channel */
{ 6, 42, 78, 32, 68, 104, 22, 58, 94},
{ 12, 48, 84, 2, 38, 74, 28, 64, 100},
{ 18, 54, 90, 8, 44, 80, 34, 70, 106},
{ 24, 60, 96, 14, 50, 86, 4, 40, 76},
{ 30, 66, 102, 20, 56, 92, 10, 46, 82},
{ 1, 37, 73, 27, 63, 99, 17, 53, 89}, /* 2nd channel */
{ 7, 43, 79, 33, 69, 105, 23, 59, 95},
{ 13, 49, 85, 3, 39, 75, 29, 65, 101},
{ 19, 55, 91, 9, 45, 81, 35, 71, 107},
{ 25, 61, 97, 15, 51, 87, 5, 41, 77},
{ 31, 67, 103, 21, 57, 93, 11, 47, 83},
};
/* macroblock bit budgets */
static const uint8_t block_sizes_dv2550[8] = {
112, 112, 112, 112, 80, 80, 0, 0,
};
static const uint8_t block_sizes_dv100[8] = {
80, 80, 80, 80, 80, 80, 64, 64,
};
static const DVprofile dv_profiles[] = {
{ .dsf = 0,
.video_stype = 0x0,
.frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
.difseg_size = 10,
.n_difchan = 1,
.time_base = { 1001, 30000 },
.ltc_divisor = 30,
.height = 480,
.width = 720,
.sar = {{8, 9}, {32, 27}},
.work_chunks = &work_chunks_dv25ntsc[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV411P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x0,
.frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
.difseg_size = 12,
.n_difchan = 1,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{16, 15}, {64, 45}},
.work_chunks = &work_chunks_dv25pal[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV420P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 1,
.video_stype = 0x0,
.frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
.difseg_size = 12,
.n_difchan = 1,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{16, 15}, {64, 45}},
.work_chunks = &work_chunks_dv25pal411[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV411P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 0,
.video_stype = 0x4,
.frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
.difseg_size = 10, /* also known as "DVCPRO50" */
.n_difchan = 2,
.time_base = { 1001, 30000 },
.ltc_divisor = 30,
.height = 480,
.width = 720,
.sar = {{8, 9}, {32, 27}},
.work_chunks = &work_chunks_dv50ntsc[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x4,
.frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
.difseg_size = 12, /* also known as "DVCPRO50" */
.n_difchan = 2,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{16, 15}, {64, 45}},
.work_chunks = &work_chunks_dv50pal[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 0,
.video_stype = 0x14,
.frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
.difseg_size = 10, /* also known as "DVCPRO HD" */
.n_difchan = 4,
.time_base = { 1001, 30000 },
.ltc_divisor = 30,
.height = 1080,
.width = 1280,
.sar = {{1, 1}, {3, 2}},
.work_chunks = &work_chunks_dv100ntsci[0],
.idct_factor = &dv_idct_factor_hd1080[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x14,
.frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
.difseg_size = 12, /* also known as "DVCPRO HD" */
.n_difchan = 4,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 1080,
.width = 1440,
.sar = {{1, 1}, {4, 3}},
.work_chunks = &work_chunks_dv100pali[0],
.idct_factor = &dv_idct_factor_hd1080[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 0,
.video_stype = 0x18,
.frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
.difseg_size = 10, /* also known as "DVCPRO HD" */
.n_difchan = 2,
.time_base = { 1001, 60000 },
.ltc_divisor = 60,
.height = 720,
.width = 960,
.sar = {{1, 1}, {4, 3}},
.work_chunks = &work_chunks_dv100ntscp[0],
.idct_factor = &dv_idct_factor_hd720[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 90,
.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
.audio_shuffle = dv_audio_shuffle525,
},
{ .dsf = 1,
.video_stype = 0x18,
.frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
.difseg_size = 12, /* also known as "DVCPRO HD" */
.n_difchan = 2,
.time_base = { 1, 50 },
.ltc_divisor = 50,
.height = 720,
.width = 960,
.sar = {{1, 1}, {4, 3}},
.work_chunks = &work_chunks_dv100palp[0],
.idct_factor = &dv_idct_factor_hd720[0],
.pix_fmt = PIX_FMT_YUV422P,
.bpm = 8,
.block_sizes = block_sizes_dv100,
.audio_stride = 90,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
},
{ .dsf = 1,
.video_stype = 0x1,
.frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
.difseg_size = 12,
.n_difchan = 1,
.time_base = { 1, 25 },
.ltc_divisor = 25,
.height = 576,
.width = 720,
.sar = {{16, 15}, {64, 45}},
.work_chunks = &work_chunks_dv25pal[0],
.idct_factor = &dv_idct_factor_sd[0],
.pix_fmt = PIX_FMT_YUV420P,
.bpm = 6,
.block_sizes = block_sizes_dv2550,
.audio_stride = 108,
.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
.audio_shuffle = dv_audio_shuffle625,
}
};
const DVprofile* avpriv_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys,
const uint8_t* frame, unsigned buf_size)
{
int i, dsf, stype;
if(buf_size < DV_PROFILE_BYTES)
return NULL;
dsf = (frame[3] & 0x80) >> 7;
stype = frame[80 * 5 + 48 + 3] & 0x1f;
/* 576i50 25Mbps 4:1:1 is a special case */
if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) {
return &dv_profiles[2];
}
if(stype == 0 && codec && codec->codec_tag==AV_RL32("dvsd") && codec->width==720 && codec->height==576)
return &dv_profiles[1];
for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
return &dv_profiles[i];
/* check if old sys matches and assumes corrupted input */
if (sys && buf_size == sys->frame_size)
return sys;
return NULL;
}
const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,
const uint8_t* frame, unsigned buf_size)
{
return avpriv_dv_frame_profile2(NULL, sys, frame, buf_size);
}
const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec)
{
int i;
for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
if (codec->coded_height == dv_profiles[i].height &&
codec->pix_fmt == dv_profiles[i].pix_fmt &&
codec->coded_width == dv_profiles[i].width)
return &dv_profiles[i];
return NULL;
}
|
