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