3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2005 Alex Beregszaszi
6 * This file is part of Libav.
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.
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.
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
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 st->codec->channels = 1;
55 st->codec->sample_rate = s1->sample_rate;
57 st->codec->channels = s1->channels;
59 st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
60 assert(st->codec->bits_per_coded_sample > 0);
61 st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8;
62 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
65 case AVMEDIA_TYPE_VIDEO: {
66 FFRawVideoDemuxerContext *s1 = s->priv_data;
67 int width = 0, height = 0, ret = 0;
68 enum PixelFormat pix_fmt;
71 if (s1->video_size && (ret = av_parse_video_size(&width, &height, s1->video_size)) < 0) {
72 av_log(s, AV_LOG_ERROR, "Couldn't parse video size.\n");
75 if ((pix_fmt = av_get_pix_fmt(s1->pixel_format)) == PIX_FMT_NONE) {
76 av_log(s, AV_LOG_ERROR, "No such pixel format: %s.\n", s1->pixel_format);
77 ret = AVERROR(EINVAL);
80 if ((ret = av_parse_video_rate(&framerate, s1->framerate)) < 0) {
81 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s1->framerate);
84 av_set_pts_info(st, 64, framerate.den, framerate.num);
85 st->codec->width = width;
86 st->codec->height = height;
87 st->codec->pix_fmt = pix_fmt;
97 #define RAW_PACKET_SIZE 1024
99 int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
103 size = RAW_PACKET_SIZE;
105 if (av_new_packet(pkt, size) < 0)
106 return AVERROR(ENOMEM);
108 pkt->pos= avio_tell(s->pb);
109 pkt->stream_index = 0;
110 ret = ffio_read_partial(s->pb, pkt->data, size);
119 int ff_raw_audio_read_header(AVFormatContext *s,
120 AVFormatParameters *ap)
122 AVStream *st = av_new_stream(s, 0);
124 return AVERROR(ENOMEM);
125 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
126 st->codec->codec_id = s->iformat->value;
127 st->need_parsing = AVSTREAM_PARSE_FULL;
128 /* the parameters will be extracted from the compressed bitstream */
133 /* MPEG-1/H.263 input */
134 int ff_raw_video_read_header(AVFormatContext *s,
135 AVFormatParameters *ap)
138 FFRawVideoDemuxerContext *s1 = s->priv_data;
139 AVRational framerate;
143 st = av_new_stream(s, 0);
145 ret = AVERROR(ENOMEM);
149 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
150 st->codec->codec_id = s->iformat->value;
151 st->need_parsing = AVSTREAM_PARSE_FULL;
153 if ((ret = av_parse_video_rate(&framerate, s1->framerate)) < 0) {
154 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s1->framerate);
158 st->codec->time_base = (AVRational){framerate.den, framerate.num};
159 av_set_pts_info(st, 64, 1, 1200000);
165 /* Note: Do not forget to add new entries to the Makefile as well. */
167 static const AVOption audio_options[] = {
168 { "sample_rate", "", offsetof(RawAudioDemuxerContext, sample_rate), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
169 { "channels", "", offsetof(RawAudioDemuxerContext, channels), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
173 const AVClass ff_rawaudio_demuxer_class = {
174 .class_name = "rawaudio demuxer",
175 .item_name = av_default_item_name,
176 .option = audio_options,
177 .version = LIBAVUTIL_VERSION_INT,
180 #define OFFSET(x) offsetof(FFRawVideoDemuxerContext, x)
181 #define DEC AV_OPT_FLAG_DECODING_PARAM
182 static const AVOption video_options[] = {
183 { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
184 { "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = "yuv420p"}, 0, 0, DEC },
185 { "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
191 const AVClass ff_rawvideo_demuxer_class = {
192 .class_name = "rawvideo demuxer",
193 .item_name = av_default_item_name,
194 .option = video_options,
195 .version = LIBAVUTIL_VERSION_INT,
198 #if CONFIG_G722_DEMUXER
199 AVInputFormat ff_g722_demuxer = {
201 .long_name = NULL_IF_CONFIG_SMALL("raw G.722"),
202 .priv_data_size = sizeof(RawAudioDemuxerContext),
203 .read_header = ff_raw_read_header,
204 .read_packet = ff_raw_read_partial_packet,
205 .flags= AVFMT_GENERIC_INDEX,
206 .extensions = "g722,722",
207 .value = CODEC_ID_ADPCM_G722,
208 .priv_class = &ff_rawaudio_demuxer_class,
212 #if CONFIG_GSM_DEMUXER
213 AVInputFormat ff_gsm_demuxer = {
215 .long_name = NULL_IF_CONFIG_SMALL("raw GSM"),
216 .read_header = ff_raw_audio_read_header,
217 .read_packet = ff_raw_read_partial_packet,
218 .flags= AVFMT_GENERIC_INDEX,
220 .value = CODEC_ID_GSM,
224 #if CONFIG_MJPEG_DEMUXER
225 FF_DEF_RAWVIDEO_DEMUXER(mjpeg, "raw MJPEG video", NULL, "mjpg,mjpeg", CODEC_ID_MJPEG)
228 #if CONFIG_MLP_DEMUXER
229 AVInputFormat ff_mlp_demuxer = {
231 .long_name = NULL_IF_CONFIG_SMALL("raw MLP"),
232 .read_header = ff_raw_audio_read_header,
233 .read_packet = ff_raw_read_partial_packet,
234 .flags= AVFMT_GENERIC_INDEX,
236 .value = CODEC_ID_MLP,
240 #if CONFIG_TRUEHD_DEMUXER
241 AVInputFormat ff_truehd_demuxer = {
243 .long_name = NULL_IF_CONFIG_SMALL("raw TrueHD"),
244 .read_header = ff_raw_audio_read_header,
245 .read_packet = ff_raw_read_partial_packet,
246 .flags= AVFMT_GENERIC_INDEX,
248 .value = CODEC_ID_TRUEHD,
252 #if CONFIG_SHORTEN_DEMUXER
253 AVInputFormat ff_shorten_demuxer = {
255 .long_name = NULL_IF_CONFIG_SMALL("raw Shorten"),
256 .read_header = ff_raw_audio_read_header,
257 .read_packet = ff_raw_read_partial_packet,
258 .flags= AVFMT_GENERIC_INDEX,
260 .value = CODEC_ID_SHORTEN,
264 #if CONFIG_VC1_DEMUXER
265 FF_DEF_RAWVIDEO_DEMUXER(vc1, "raw VC-1", NULL, "vc1", CODEC_ID_VC1)