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;
113 #define RAW_PACKET_SIZE 1024
115 int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
119 size = RAW_PACKET_SIZE;
121 if (av_new_packet(pkt, size) < 0)
122 return AVERROR(ENOMEM);
124 pkt->pos= avio_tell(s->pb);
125 pkt->stream_index = 0;
126 ret = ffio_read_partial(s->pb, pkt->data, size);
135 int ff_raw_audio_read_header(AVFormatContext *s,
136 AVFormatParameters *ap)
138 AVStream *st = av_new_stream(s, 0);
140 return AVERROR(ENOMEM);
141 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
142 st->codec->codec_id = s->iformat->value;
143 st->need_parsing = AVSTREAM_PARSE_FULL;
145 /* the parameters will be extracted from the compressed bitstream */
150 /* MPEG-1/H.263 input */
151 int ff_raw_video_read_header(AVFormatContext *s,
152 AVFormatParameters *ap)
155 FFRawVideoDemuxerContext *s1 = s->priv_data;
156 AVRational framerate;
160 st = av_new_stream(s, 0);
162 ret = AVERROR(ENOMEM);
166 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
167 st->codec->codec_id = s->iformat->value;
168 st->need_parsing = AVSTREAM_PARSE_FULL;
170 if ((ret = av_parse_video_rate(&framerate, s1->framerate)) < 0) {
171 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s1->framerate);
174 #if FF_API_FORMAT_PARAMETERS
175 if (ap->time_base.num)
176 framerate = (AVRational){ap->time_base.den, ap->time_base.num};
179 st->codec->time_base = (AVRational){framerate.den, framerate.num};
180 av_set_pts_info(st, 64, 1, 1200000);
186 /* Note: Do not forget to add new entries to the Makefile as well. */
188 static const AVOption audio_options[] = {
189 { "sample_rate", "", offsetof(RawAudioDemuxerContext, sample_rate), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
190 { "channels", "", offsetof(RawAudioDemuxerContext, channels), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
194 const AVClass ff_rawaudio_demuxer_class = {
195 .class_name = "rawaudio demuxer",
196 .item_name = av_default_item_name,
197 .option = audio_options,
198 .version = LIBAVUTIL_VERSION_INT,
201 #define OFFSET(x) offsetof(FFRawVideoDemuxerContext, x)
202 #define DEC AV_OPT_FLAG_DECODING_PARAM
203 static const AVOption video_options[] = {
204 { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
205 { "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = "yuv420p"}, 0, 0, DEC },
206 { "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
212 const AVClass ff_rawvideo_demuxer_class = {
213 .class_name = "rawvideo demuxer",
214 .item_name = av_default_item_name,
215 .option = video_options,
216 .version = LIBAVUTIL_VERSION_INT,
219 #if CONFIG_G722_DEMUXER
220 AVInputFormat ff_g722_demuxer = {
222 NULL_IF_CONFIG_SMALL("raw G.722"),
223 sizeof(RawAudioDemuxerContext),
226 ff_raw_read_partial_packet,
227 .flags= AVFMT_GENERIC_INDEX,
228 .extensions = "g722,722",
229 .value = CODEC_ID_ADPCM_G722,
230 .priv_class = &ff_rawaudio_demuxer_class,
234 #if CONFIG_GSM_DEMUXER
235 AVInputFormat ff_gsm_demuxer = {
237 NULL_IF_CONFIG_SMALL("raw GSM"),
240 ff_raw_audio_read_header,
241 ff_raw_read_partial_packet,
242 .flags= AVFMT_GENERIC_INDEX,
244 .value = CODEC_ID_GSM,
248 #if CONFIG_MJPEG_DEMUXER
249 FF_DEF_RAWVIDEO_DEMUXER(mjpeg, "raw MJPEG video", NULL, "mjpg,mjpeg", CODEC_ID_MJPEG)
252 #if CONFIG_MLP_DEMUXER
253 AVInputFormat ff_mlp_demuxer = {
255 NULL_IF_CONFIG_SMALL("raw MLP"),
258 ff_raw_audio_read_header,
259 ff_raw_read_partial_packet,
260 .flags= AVFMT_GENERIC_INDEX,
262 .value = CODEC_ID_MLP,
266 #if CONFIG_TRUEHD_DEMUXER
267 AVInputFormat ff_truehd_demuxer = {
269 NULL_IF_CONFIG_SMALL("raw TrueHD"),
272 ff_raw_audio_read_header,
273 ff_raw_read_partial_packet,
274 .flags= AVFMT_GENERIC_INDEX,
276 .value = CODEC_ID_TRUEHD,
280 #if CONFIG_SHORTEN_DEMUXER
281 AVInputFormat ff_shorten_demuxer = {
283 NULL_IF_CONFIG_SMALL("raw Shorten"),
286 ff_raw_audio_read_header,
287 ff_raw_read_partial_packet,
288 .flags= AVFMT_GENERIC_INDEX,
290 .value = CODEC_ID_SHORTEN,
294 #if CONFIG_VC1_DEMUXER
295 FF_DEF_RAWVIDEO_DEMUXER(vc1, "raw VC-1", NULL, "vc1", CODEC_ID_VC1)