3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2005 Alex Beregszaszi
6 * This file is part of FFmpeg.
8 * FFmpeg 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.
13 * FFmpeg 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.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "avio_internal.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/parseutils.h"
28 #include "libavutil/pixdesc.h"
31 int ff_raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
36 st = av_new_stream(s, 0);
38 return AVERROR(ENOMEM);
40 id = s->iformat->value;
41 if (id == CODEC_ID_RAWVIDEO) {
42 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
44 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
46 st->codec->codec_id = id;
48 switch(st->codec->codec_type) {
49 case AVMEDIA_TYPE_AUDIO: {
50 RawAudioDemuxerContext *s1 = s->priv_data;
52 #if FF_API_FORMAT_PARAMETERS
54 st->codec->sample_rate = ap->sample_rate;
56 st->codec->channels = ap->channels;
57 else st->codec->channels = 1;
61 st->codec->sample_rate = s1->sample_rate;
63 st->codec->channels = s1->channels;
65 st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
66 assert(st->codec->bits_per_coded_sample > 0);
67 st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8;
68 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
71 case AVMEDIA_TYPE_VIDEO: {
72 FFRawVideoDemuxerContext *s1 = s->priv_data;
73 int width = 0, height = 0, ret = 0;
74 enum PixelFormat pix_fmt;
77 if (s1->video_size && (ret = av_parse_video_size(&width, &height, s1->video_size)) < 0) {
78 av_log(s, AV_LOG_ERROR, "Couldn't parse video size.\n");
81 if ((pix_fmt = av_get_pix_fmt(s1->pixel_format)) == PIX_FMT_NONE) {
82 av_log(s, AV_LOG_ERROR, "No such pixel format: %s.\n", s1->pixel_format);
83 ret = AVERROR(EINVAL);
86 if ((ret = av_parse_video_rate(&framerate, s1->framerate)) < 0) {
87 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s1->framerate);
90 #if FF_API_FORMAT_PARAMETERS
96 pix_fmt = ap->pix_fmt;
97 if (ap->time_base.num)
98 framerate = (AVRational){ap->time_base.den, ap->time_base.num};
100 av_set_pts_info(st, 64, framerate.den, framerate.num);
101 st->codec->width = width;
102 st->codec->height = height;
103 st->codec->pix_fmt = pix_fmt;
105 av_freep(&s1->video_size);
106 av_freep(&s1->pixel_format);
107 av_freep(&s1->framerate);
116 #define RAW_PACKET_SIZE 1024
118 int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
122 size = RAW_PACKET_SIZE;
124 if (av_new_packet(pkt, size) < 0)
125 return AVERROR(ENOMEM);
127 pkt->pos= avio_tell(s->pb);
128 pkt->stream_index = 0;
129 ret = ffio_read_partial(s->pb, pkt->data, size);
138 int ff_raw_audio_read_header(AVFormatContext *s,
139 AVFormatParameters *ap)
141 AVStream *st = av_new_stream(s, 0);
143 return AVERROR(ENOMEM);
144 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
145 st->codec->codec_id = s->iformat->value;
146 st->need_parsing = AVSTREAM_PARSE_FULL;
148 /* the parameters will be extracted from the compressed bitstream */
153 /* MPEG-1/H.263 input */
154 int ff_raw_video_read_header(AVFormatContext *s,
155 AVFormatParameters *ap)
158 FFRawVideoDemuxerContext *s1 = s->priv_data;
159 AVRational framerate;
163 st = av_new_stream(s, 0);
165 ret = AVERROR(ENOMEM);
169 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
170 st->codec->codec_id = s->iformat->value;
171 st->need_parsing = AVSTREAM_PARSE_FULL;
173 if ((ret = av_parse_video_rate(&framerate, s1->framerate)) < 0) {
174 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s1->framerate);
177 #if FF_API_FORMAT_PARAMETERS
178 if (ap->time_base.num)
179 framerate = (AVRational){ap->time_base.den, ap->time_base.num};
182 st->codec->time_base = (AVRational){framerate.den, framerate.num};
183 av_set_pts_info(st, 64, 1, 1200000);
186 av_freep(&s1->framerate);
190 /* Note: Do not forget to add new entries to the Makefile as well. */
192 static const AVOption audio_options[] = {
193 { "sample_rate", "", offsetof(RawAudioDemuxerContext, sample_rate), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
194 { "channels", "", offsetof(RawAudioDemuxerContext, channels), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
198 const AVClass ff_rawaudio_demuxer_class = {
199 .class_name = "rawaudio demuxer",
200 .item_name = av_default_item_name,
201 .option = audio_options,
202 .version = LIBAVUTIL_VERSION_INT,
205 #define OFFSET(x) offsetof(FFRawVideoDemuxerContext, x)
206 #define DEC AV_OPT_FLAG_DECODING_PARAM
207 static const AVOption video_options[] = {
208 { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
209 { "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = "yuv420p"}, 0, 0, DEC },
210 { "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
216 const AVClass ff_rawvideo_demuxer_class = {
217 .class_name = "rawvideo demuxer",
218 .item_name = av_default_item_name,
219 .option = video_options,
220 .version = LIBAVUTIL_VERSION_INT,
223 #if CONFIG_G722_DEMUXER
224 AVInputFormat ff_g722_demuxer = {
226 NULL_IF_CONFIG_SMALL("raw G.722"),
227 sizeof(RawAudioDemuxerContext),
230 ff_raw_read_partial_packet,
231 .flags= AVFMT_GENERIC_INDEX,
232 .extensions = "g722,722",
233 .value = CODEC_ID_ADPCM_G722,
234 .priv_class = &ff_rawaudio_demuxer_class,
238 #if CONFIG_GSM_DEMUXER
239 AVInputFormat ff_gsm_demuxer = {
241 NULL_IF_CONFIG_SMALL("raw GSM"),
244 ff_raw_audio_read_header,
245 ff_raw_read_partial_packet,
246 .flags= AVFMT_GENERIC_INDEX,
248 .value = CODEC_ID_GSM,
252 #if CONFIG_MJPEG_DEMUXER
253 FF_DEF_RAWVIDEO_DEMUXER(mjpeg, "raw MJPEG video", NULL, "mjpg,mjpeg", CODEC_ID_MJPEG)
256 #if CONFIG_MLP_DEMUXER
257 AVInputFormat ff_mlp_demuxer = {
259 NULL_IF_CONFIG_SMALL("raw MLP"),
262 ff_raw_audio_read_header,
263 ff_raw_read_partial_packet,
264 .flags= AVFMT_GENERIC_INDEX,
266 .value = CODEC_ID_MLP,
270 #if CONFIG_TRUEHD_DEMUXER
271 AVInputFormat ff_truehd_demuxer = {
273 NULL_IF_CONFIG_SMALL("raw TrueHD"),
276 ff_raw_audio_read_header,
277 ff_raw_read_partial_packet,
278 .flags= AVFMT_GENERIC_INDEX,
280 .value = CODEC_ID_TRUEHD,
284 #if CONFIG_SHORTEN_DEMUXER
285 AVInputFormat ff_shorten_demuxer = {
287 NULL_IF_CONFIG_SMALL("raw Shorten"),
290 ff_raw_audio_read_header,
291 ff_raw_read_partial_packet,
292 .flags= AVFMT_GENERIC_INDEX,
294 .value = CODEC_ID_SHORTEN,
298 #if CONFIG_VC1_DEMUXER
299 FF_DEF_RAWVIDEO_DEMUXER(vc1, "raw VC-1", NULL, "vc1", CODEC_ID_VC1)