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00023 #include "avformat.h"
00024 #include "internal.h"
00025 #include "avio_internal.h"
00026 #include "rawdec.h"
00027 #include "libavutil/opt.h"
00028 #include "libavutil/parseutils.h"
00029 #include "libavutil/pixdesc.h"
00030
00031
00032 int ff_raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
00033 {
00034 AVStream *st;
00035 enum CodecID id;
00036
00037 st = avformat_new_stream(s, NULL);
00038 if (!st)
00039 return AVERROR(ENOMEM);
00040
00041 id = s->iformat->value;
00042 if (id == CODEC_ID_RAWVIDEO) {
00043 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
00044 } else {
00045 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
00046 }
00047 st->codec->codec_id = id;
00048
00049 switch(st->codec->codec_type) {
00050 case AVMEDIA_TYPE_AUDIO: {
00051 RawAudioDemuxerContext *s1 = s->priv_data;
00052
00053 st->codec->channels = 1;
00054
00055 if (id == CODEC_ID_ADPCM_G722)
00056 st->codec->sample_rate = 16000;
00057
00058 if (s1 && s1->sample_rate)
00059 st->codec->sample_rate = s1->sample_rate;
00060 if (s1 && s1->channels)
00061 st->codec->channels = s1->channels;
00062
00063 st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
00064 assert(st->codec->bits_per_coded_sample > 0);
00065 st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8;
00066 avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
00067 break;
00068 }
00069 case AVMEDIA_TYPE_VIDEO: {
00070 FFRawVideoDemuxerContext *s1 = s->priv_data;
00071 int width = 0, height = 0, ret = 0;
00072 enum PixelFormat pix_fmt;
00073 AVRational framerate;
00074
00075 if (s1->video_size && (ret = av_parse_video_size(&width, &height, s1->video_size)) < 0) {
00076 av_log(s, AV_LOG_ERROR, "Couldn't parse video size.\n");
00077 goto fail;
00078 }
00079 if ((pix_fmt = av_get_pix_fmt(s1->pixel_format)) == PIX_FMT_NONE) {
00080 av_log(s, AV_LOG_ERROR, "No such pixel format: %s.\n", s1->pixel_format);
00081 ret = AVERROR(EINVAL);
00082 goto fail;
00083 }
00084 if ((ret = av_parse_video_rate(&framerate, s1->framerate)) < 0) {
00085 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s1->framerate);
00086 goto fail;
00087 }
00088 avpriv_set_pts_info(st, 64, framerate.den, framerate.num);
00089 st->codec->width = width;
00090 st->codec->height = height;
00091 st->codec->pix_fmt = pix_fmt;
00092 fail:
00093 return ret;
00094 }
00095 default:
00096 return -1;
00097 }
00098 return 0;
00099 }
00100
00101 #define RAW_PACKET_SIZE 1024
00102
00103 int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
00104 {
00105 int ret, size;
00106
00107 size = RAW_PACKET_SIZE;
00108
00109 if (av_new_packet(pkt, size) < 0)
00110 return AVERROR(ENOMEM);
00111
00112 pkt->pos= avio_tell(s->pb);
00113 pkt->stream_index = 0;
00114 ret = ffio_read_partial(s->pb, pkt->data, size);
00115 if (ret < 0) {
00116 av_free_packet(pkt);
00117 return ret;
00118 }
00119 pkt->size = ret;
00120 return ret;
00121 }
00122
00123 int ff_raw_audio_read_header(AVFormatContext *s,
00124 AVFormatParameters *ap)
00125 {
00126 AVStream *st = avformat_new_stream(s, NULL);
00127 if (!st)
00128 return AVERROR(ENOMEM);
00129 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
00130 st->codec->codec_id = s->iformat->value;
00131 st->need_parsing = AVSTREAM_PARSE_FULL;
00132 st->start_time = 0;
00133
00134
00135 return 0;
00136 }
00137
00138
00139 int ff_raw_video_read_header(AVFormatContext *s,
00140 AVFormatParameters *ap)
00141 {
00142 AVStream *st;
00143 FFRawVideoDemuxerContext *s1 = s->priv_data;
00144 AVRational framerate;
00145 int ret = 0;
00146
00147
00148 st = avformat_new_stream(s, NULL);
00149 if (!st) {
00150 ret = AVERROR(ENOMEM);
00151 goto fail;
00152 }
00153
00154 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
00155 st->codec->codec_id = s->iformat->value;
00156 st->need_parsing = AVSTREAM_PARSE_FULL;
00157
00158 if ((ret = av_parse_video_rate(&framerate, s1->framerate)) < 0) {
00159 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s1->framerate);
00160 goto fail;
00161 }
00162
00163 st->r_frame_rate = st->avg_frame_rate = framerate;
00164 avpriv_set_pts_info(st, 64, 1, 1200000);
00165
00166 fail:
00167 return ret;
00168 }
00169
00170
00171
00172 #define OFFSET(x) offsetof(FFRawVideoDemuxerContext, x)
00173 #define DEC AV_OPT_FLAG_DECODING_PARAM
00174 const AVOption ff_rawvideo_options[] = {
00175 { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC},
00176 { NULL },
00177 };
00178
00179 #if CONFIG_G722_DEMUXER
00180 AVInputFormat ff_g722_demuxer = {
00181 .name = "g722",
00182 .long_name = NULL_IF_CONFIG_SMALL("raw G.722"),
00183 .read_header = ff_raw_read_header,
00184 .read_packet = ff_raw_read_partial_packet,
00185 .flags= AVFMT_GENERIC_INDEX,
00186 .extensions = "g722,722",
00187 .value = CODEC_ID_ADPCM_G722,
00188 };
00189 #endif
00190
00191 #if CONFIG_LATM_DEMUXER
00192 AVInputFormat ff_latm_demuxer = {
00193 .name = "latm",
00194 .long_name = NULL_IF_CONFIG_SMALL("raw LOAS/LATM"),
00195 .read_header = ff_raw_audio_read_header,
00196 .read_packet = ff_raw_read_partial_packet,
00197 .flags= AVFMT_GENERIC_INDEX,
00198 .extensions = "latm",
00199 .value = CODEC_ID_AAC_LATM,
00200 };
00201 #endif
00202
00203 #if CONFIG_MJPEG_DEMUXER
00204 FF_DEF_RAWVIDEO_DEMUXER(mjpeg, "raw MJPEG video", NULL, "mjpg,mjpeg", CODEC_ID_MJPEG)
00205 #endif
00206
00207 #if CONFIG_MLP_DEMUXER
00208 AVInputFormat ff_mlp_demuxer = {
00209 .name = "mlp",
00210 .long_name = NULL_IF_CONFIG_SMALL("raw MLP"),
00211 .read_header = ff_raw_audio_read_header,
00212 .read_packet = ff_raw_read_partial_packet,
00213 .flags= AVFMT_GENERIC_INDEX,
00214 .extensions = "mlp",
00215 .value = CODEC_ID_MLP,
00216 };
00217 #endif
00218
00219 #if CONFIG_TRUEHD_DEMUXER
00220 AVInputFormat ff_truehd_demuxer = {
00221 .name = "truehd",
00222 .long_name = NULL_IF_CONFIG_SMALL("raw TrueHD"),
00223 .read_header = ff_raw_audio_read_header,
00224 .read_packet = ff_raw_read_partial_packet,
00225 .flags= AVFMT_GENERIC_INDEX,
00226 .extensions = "thd",
00227 .value = CODEC_ID_TRUEHD,
00228 };
00229 #endif
00230
00231 #if CONFIG_SHORTEN_DEMUXER
00232 AVInputFormat ff_shorten_demuxer = {
00233 .name = "shn",
00234 .long_name = NULL_IF_CONFIG_SMALL("raw Shorten"),
00235 .read_header = ff_raw_audio_read_header,
00236 .read_packet = ff_raw_read_partial_packet,
00237 .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK,
00238 .extensions = "shn",
00239 .value = CODEC_ID_SHORTEN,
00240 };
00241 #endif
00242
00243 #if CONFIG_VC1_DEMUXER
00244 FF_DEF_RAWVIDEO_DEMUXER(vc1, "raw VC-1", NULL, "vc1", CODEC_ID_VC1)
00245 #endif