lavf: deprecate AVFormatParameters.{channels,sample_rate}.
[libav.git] / libavformat / rawdec.c
1 /*
2 * RAW demuxers
3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2005 Alex Beregszaszi
5 *
6 * This file is part of Libav.
7 *
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "avformat.h"
24 #include "avio_internal.h"
25 #include "rawdec.h"
26 #include "libavutil/opt.h"
27
28 /* raw input */
29 int ff_raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
30 {
31 AVStream *st;
32 enum CodecID id;
33
34 st = av_new_stream(s, 0);
35 if (!st)
36 return AVERROR(ENOMEM);
37
38 id = s->iformat->value;
39 if (id == CODEC_ID_RAWVIDEO) {
40 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
41 } else {
42 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
43 }
44 st->codec->codec_id = id;
45
46 switch(st->codec->codec_type) {
47 case AVMEDIA_TYPE_AUDIO: {
48 RawAudioDemuxerContext *s1 = s->priv_data;
49
50 #if FF_API_FORMAT_PARAMETERS
51 if (ap->sample_rate)
52 st->codec->sample_rate = ap->sample_rate;
53 if (ap->channels)
54 st->codec->channels = ap->channels;
55 else st->codec->channels = 1;
56 #endif
57
58 if (s1->sample_rate)
59 st->codec->sample_rate = s1->sample_rate;
60 if (s1->channels)
61 st->codec->channels = s1->channels;
62
63 st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
64 assert(st->codec->bits_per_coded_sample > 0);
65 st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8;
66 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
67 break;
68 }
69 case AVMEDIA_TYPE_VIDEO:
70 if(ap->time_base.num)
71 av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
72 else
73 av_set_pts_info(st, 64, 1, 25);
74 st->codec->width = ap->width;
75 st->codec->height = ap->height;
76 st->codec->pix_fmt = ap->pix_fmt;
77 if(st->codec->pix_fmt == PIX_FMT_NONE)
78 st->codec->pix_fmt= PIX_FMT_YUV420P;
79 break;
80 default:
81 return -1;
82 }
83 return 0;
84 }
85
86 #define RAW_PACKET_SIZE 1024
87
88 int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
89 {
90 int ret, size;
91
92 size = RAW_PACKET_SIZE;
93
94 if (av_new_packet(pkt, size) < 0)
95 return AVERROR(ENOMEM);
96
97 pkt->pos= avio_tell(s->pb);
98 pkt->stream_index = 0;
99 ret = ffio_read_partial(s->pb, pkt->data, size);
100 if (ret < 0) {
101 av_free_packet(pkt);
102 return ret;
103 }
104 pkt->size = ret;
105 return ret;
106 }
107
108 int ff_raw_audio_read_header(AVFormatContext *s,
109 AVFormatParameters *ap)
110 {
111 AVStream *st = av_new_stream(s, 0);
112 if (!st)
113 return AVERROR(ENOMEM);
114 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
115 st->codec->codec_id = s->iformat->value;
116 st->need_parsing = AVSTREAM_PARSE_FULL;
117 /* the parameters will be extracted from the compressed bitstream */
118
119 return 0;
120 }
121
122 /* MPEG-1/H.263 input */
123 int ff_raw_video_read_header(AVFormatContext *s,
124 AVFormatParameters *ap)
125 {
126 AVStream *st;
127
128 st = av_new_stream(s, 0);
129 if (!st)
130 return AVERROR(ENOMEM);
131
132 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
133 st->codec->codec_id = s->iformat->value;
134 st->need_parsing = AVSTREAM_PARSE_FULL;
135
136 /* for MJPEG, specify frame rate */
137 /* for MPEG-4 specify it, too (most MPEG-4 streams do not have the fixed_vop_rate set ...)*/
138 if (ap->time_base.num) {
139 st->codec->time_base= ap->time_base;
140 } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
141 st->codec->codec_id == CODEC_ID_MPEG4 ||
142 st->codec->codec_id == CODEC_ID_DIRAC ||
143 st->codec->codec_id == CODEC_ID_DNXHD ||
144 st->codec->codec_id == CODEC_ID_VC1 ||
145 st->codec->codec_id == CODEC_ID_H264) {
146 st->codec->time_base= (AVRational){1,25};
147 }
148 av_set_pts_info(st, 64, 1, 1200000);
149
150 return 0;
151 }
152
153 /* Note: Do not forget to add new entries to the Makefile as well. */
154
155 static const AVOption audio_options[] = {
156 { "sample_rate", "", offsetof(RawAudioDemuxerContext, sample_rate), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
157 { "channels", "", offsetof(RawAudioDemuxerContext, channels), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
158 { NULL },
159 };
160
161 const AVClass ff_rawaudio_demuxer_class = {
162 .class_name = "rawaudio demuxer",
163 .item_name = av_default_item_name,
164 .option = audio_options,
165 .version = LIBAVUTIL_VERSION_INT,
166 };
167
168 #if CONFIG_G722_DEMUXER
169 AVInputFormat ff_g722_demuxer = {
170 "g722",
171 NULL_IF_CONFIG_SMALL("raw G.722"),
172 sizeof(RawAudioDemuxerContext),
173 NULL,
174 ff_raw_read_header,
175 ff_raw_read_partial_packet,
176 .flags= AVFMT_GENERIC_INDEX,
177 .extensions = "g722,722",
178 .value = CODEC_ID_ADPCM_G722,
179 .priv_class = &ff_rawaudio_demuxer_class,
180 };
181 #endif
182
183 #if CONFIG_GSM_DEMUXER
184 AVInputFormat ff_gsm_demuxer = {
185 "gsm",
186 NULL_IF_CONFIG_SMALL("raw GSM"),
187 0,
188 NULL,
189 ff_raw_audio_read_header,
190 ff_raw_read_partial_packet,
191 .flags= AVFMT_GENERIC_INDEX,
192 .extensions = "gsm",
193 .value = CODEC_ID_GSM,
194 };
195 #endif
196
197 #if CONFIG_MJPEG_DEMUXER
198 AVInputFormat ff_mjpeg_demuxer = {
199 "mjpeg",
200 NULL_IF_CONFIG_SMALL("raw MJPEG video"),
201 0,
202 NULL,
203 ff_raw_video_read_header,
204 ff_raw_read_partial_packet,
205 .flags= AVFMT_GENERIC_INDEX,
206 .extensions = "mjpg,mjpeg",
207 .value = CODEC_ID_MJPEG,
208 };
209 #endif
210
211 #if CONFIG_MLP_DEMUXER
212 AVInputFormat ff_mlp_demuxer = {
213 "mlp",
214 NULL_IF_CONFIG_SMALL("raw MLP"),
215 0,
216 NULL,
217 ff_raw_audio_read_header,
218 ff_raw_read_partial_packet,
219 .flags= AVFMT_GENERIC_INDEX,
220 .extensions = "mlp",
221 .value = CODEC_ID_MLP,
222 };
223 #endif
224
225 #if CONFIG_TRUEHD_DEMUXER
226 AVInputFormat ff_truehd_demuxer = {
227 "truehd",
228 NULL_IF_CONFIG_SMALL("raw TrueHD"),
229 0,
230 NULL,
231 ff_raw_audio_read_header,
232 ff_raw_read_partial_packet,
233 .flags= AVFMT_GENERIC_INDEX,
234 .extensions = "thd",
235 .value = CODEC_ID_TRUEHD,
236 };
237 #endif
238
239 #if CONFIG_SHORTEN_DEMUXER
240 AVInputFormat ff_shorten_demuxer = {
241 "shn",
242 NULL_IF_CONFIG_SMALL("raw Shorten"),
243 0,
244 NULL,
245 ff_raw_audio_read_header,
246 ff_raw_read_partial_packet,
247 .flags= AVFMT_GENERIC_INDEX,
248 .extensions = "shn",
249 .value = CODEC_ID_SHORTEN,
250 };
251 #endif
252
253 #if CONFIG_VC1_DEMUXER
254 AVInputFormat ff_vc1_demuxer = {
255 "vc1",
256 NULL_IF_CONFIG_SMALL("raw VC-1"),
257 0,
258 NULL /* vc1_probe */,
259 ff_raw_video_read_header,
260 ff_raw_read_partial_packet,
261 .extensions = "vc1",
262 .value = CODEC_ID_VC1,
263 };
264 #endif