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-rw-r--r--contrib/ffmpeg/libavformat/raw.c843
1 files changed, 843 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavformat/raw.c b/contrib/ffmpeg/libavformat/raw.c
new file mode 100644
index 000000000..e1ccbcd6d
--- /dev/null
+++ b/contrib/ffmpeg/libavformat/raw.c
@@ -0,0 +1,843 @@
+/*
+ * RAW muxer and demuxer
+ * Copyright (c) 2001 Fabrice Bellard.
+ * Copyright (c) 2005 Alex Beregszaszi
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "avformat.h"
+
+#ifdef CONFIG_MUXERS
+/* simple formats */
+static int raw_write_header(struct AVFormatContext *s)
+{
+ return 0;
+}
+
+static int flac_write_header(struct AVFormatContext *s)
+{
+ static const uint8_t header[8] = {
+ 0x66, 0x4C, 0x61, 0x43, 0x80, 0x00, 0x00, 0x22
+ };
+ uint8_t *streaminfo = s->streams[0]->codec->extradata;
+ int len = s->streams[0]->codec->extradata_size;
+ if(streaminfo != NULL && len > 0) {
+ put_buffer(&s->pb, header, 8);
+ put_buffer(&s->pb, streaminfo, len);
+ }
+ return 0;
+}
+
+static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt)
+{
+ put_buffer(&s->pb, pkt->data, pkt->size);
+ put_flush_packet(&s->pb);
+ return 0;
+}
+
+static int raw_write_trailer(struct AVFormatContext *s)
+{
+ return 0;
+}
+#endif //CONFIG_MUXERS
+
+/* raw input */
+static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
+{
+ AVStream *st;
+ int id;
+
+ st = av_new_stream(s, 0);
+ if (!st)
+ return AVERROR_NOMEM;
+
+ id = s->iformat->value;
+ if (id == CODEC_ID_RAWVIDEO) {
+ st->codec->codec_type = CODEC_TYPE_VIDEO;
+ } else {
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ }
+ st->codec->codec_id = id;
+
+ switch(st->codec->codec_type) {
+ case CODEC_TYPE_AUDIO:
+ st->codec->sample_rate = ap->sample_rate;
+ st->codec->channels = ap->channels;
+ av_set_pts_info(st, 64, 1, st->codec->sample_rate);
+ break;
+ case CODEC_TYPE_VIDEO:
+ av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
+ st->codec->width = ap->width;
+ st->codec->height = ap->height;
+ st->codec->pix_fmt = ap->pix_fmt;
+ if(st->codec->pix_fmt == PIX_FMT_NONE)
+ st->codec->pix_fmt= PIX_FMT_YUV420P;
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+#define RAW_PACKET_SIZE 1024
+
+static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ int ret, size;
+ // AVStream *st = s->streams[0];
+
+ size= RAW_PACKET_SIZE;
+
+ ret= av_get_packet(&s->pb, pkt, size);
+
+ pkt->stream_index = 0;
+ if (ret <= 0) {
+ return AVERROR_IO;
+ }
+ /* note: we need to modify the packet size here to handle the last
+ packet */
+ pkt->size = ret;
+ return ret;
+}
+
+static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ int ret, size;
+
+ size = RAW_PACKET_SIZE;
+
+ if (av_new_packet(pkt, size) < 0)
+ return AVERROR_IO;
+
+ pkt->pos= url_ftell(&s->pb);
+ pkt->stream_index = 0;
+ ret = get_partial_buffer(&s->pb, pkt->data, size);
+ if (ret <= 0) {
+ av_free_packet(pkt);
+ return AVERROR_IO;
+ }
+ pkt->size = ret;
+ return ret;
+}
+
+// http://www.artificis.hu/files/texts/ingenient.txt
+static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ int ret, size, w, h, unk1, unk2;
+
+ if (get_le32(&s->pb) != MKTAG('M', 'J', 'P', 'G'))
+ return AVERROR_IO; // FIXME
+
+ size = get_le32(&s->pb);
+
+ w = get_le16(&s->pb);
+ h = get_le16(&s->pb);
+
+ url_fskip(&s->pb, 8); // zero + size (padded?)
+ url_fskip(&s->pb, 2);
+ unk1 = get_le16(&s->pb);
+ unk2 = get_le16(&s->pb);
+ url_fskip(&s->pb, 22); // ascii timestamp
+
+ av_log(NULL, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
+ size, w, h, unk1, unk2);
+
+ if (av_new_packet(pkt, size) < 0)
+ return AVERROR_IO;
+
+ pkt->pos = url_ftell(&s->pb);
+ pkt->stream_index = 0;
+ ret = get_buffer(&s->pb, pkt->data, size);
+ if (ret <= 0) {
+ av_free_packet(pkt);
+ return AVERROR_IO;
+ }
+ pkt->size = ret;
+ return ret;
+}
+
+static int raw_read_close(AVFormatContext *s)
+{
+ return 0;
+}
+
+int pcm_read_seek(AVFormatContext *s,
+ int stream_index, int64_t timestamp, int flags)
+{
+ AVStream *st;
+ int block_align, byte_rate;
+ int64_t pos;
+
+ st = s->streams[0];
+
+ block_align = st->codec->block_align ? st->codec->block_align :
+ (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
+ byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
+ block_align * st->codec->sample_rate;
+
+ if (block_align <= 0 || byte_rate <= 0)
+ return -1;
+
+ /* compute the position by aligning it to block_align */
+ pos = av_rescale_rnd(timestamp * byte_rate,
+ st->time_base.num,
+ st->time_base.den * (int64_t)block_align,
+ (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
+ pos *= block_align;
+
+ /* recompute exact position */
+ st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
+ url_fseek(&s->pb, pos + s->data_offset, SEEK_SET);
+ return 0;
+}
+
+/* ac3 read */
+static int ac3_read_header(AVFormatContext *s,
+ AVFormatParameters *ap)
+{
+ AVStream *st;
+
+ st = av_new_stream(s, 0);
+ if (!st)
+ return AVERROR_NOMEM;
+
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_id = CODEC_ID_AC3;
+ st->need_parsing = 1;
+ /* the parameters will be extracted from the compressed bitstream */
+ return 0;
+}
+
+static int shorten_read_header(AVFormatContext *s,
+ AVFormatParameters *ap)
+{
+ AVStream *st;
+
+ st = av_new_stream(s, 0);
+ if (!st)
+ return AVERROR_NOMEM;
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_id = CODEC_ID_SHORTEN;
+ st->need_parsing = 1;
+ /* the parameters will be extracted from the compressed bitstream */
+ return 0;
+}
+
+/* flac read */
+static int flac_read_header(AVFormatContext *s,
+ AVFormatParameters *ap)
+{
+ AVStream *st;
+
+ st = av_new_stream(s, 0);
+ if (!st)
+ return AVERROR_NOMEM;
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_id = CODEC_ID_FLAC;
+ st->need_parsing = 1;
+ /* the parameters will be extracted from the compressed bitstream */
+ return 0;
+}
+
+/* dts read */
+static int dts_read_header(AVFormatContext *s,
+ AVFormatParameters *ap)
+{
+ AVStream *st;
+
+ st = av_new_stream(s, 0);
+ if (!st)
+ return AVERROR_NOMEM;
+
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_id = CODEC_ID_DTS;
+ st->need_parsing = 1;
+ /* the parameters will be extracted from the compressed bitstream */
+ return 0;
+}
+
+/* aac read */
+static int aac_read_header(AVFormatContext *s,
+ AVFormatParameters *ap)
+{
+ AVStream *st;
+
+ st = av_new_stream(s, 0);
+ if (!st)
+ return AVERROR_NOMEM;
+
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_id = CODEC_ID_AAC;
+ st->need_parsing = 1;
+ /* the parameters will be extracted from the compressed bitstream */
+ return 0;
+}
+
+/* mpeg1/h263 input */
+static int video_read_header(AVFormatContext *s,
+ AVFormatParameters *ap)
+{
+ AVStream *st;
+
+ st = av_new_stream(s, 0);
+ if (!st)
+ return AVERROR_NOMEM;
+
+ st->codec->codec_type = CODEC_TYPE_VIDEO;
+ st->codec->codec_id = s->iformat->value;
+ st->need_parsing = 1;
+
+ /* for mjpeg, specify frame rate */
+ /* for mpeg4 specify it too (most mpeg4 streams dont have the fixed_vop_rate set ...)*/
+ if (ap->time_base.num) {
+ av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
+ } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
+ st->codec->codec_id == CODEC_ID_MPEG4 ||
+ st->codec->codec_id == CODEC_ID_H264) {
+ av_set_pts_info(st, 64, 1, 25);
+ }
+
+ return 0;
+}
+
+#define SEQ_START_CODE 0x000001b3
+#define GOP_START_CODE 0x000001b8
+#define PICTURE_START_CODE 0x00000100
+#define SLICE_START_CODE 0x00000101
+#define PACK_START_CODE 0x000001ba
+#define VIDEO_ID 0x000001e0
+#define AUDIO_ID 0x000001c0
+
+static int mpegvideo_probe(AVProbeData *p)
+{
+ uint32_t code= -1;
+ int pic=0, seq=0, slice=0, pspack=0, pes=0;
+ int i;
+
+ for(i=0; i<p->buf_size; i++){
+ code = (code<<8) + p->buf[i];
+ if ((code & 0xffffff00) == 0x100) {
+ switch(code){
+ case SEQ_START_CODE: seq++; break;
+ case PICTURE_START_CODE: pic++; break;
+ case SLICE_START_CODE: slice++; break;
+ case PACK_START_CODE: pspack++; break;
+ case VIDEO_ID:
+ case AUDIO_ID: pes++; break;
+ }
+ }
+ }
+ if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
+ return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
+ return 0;
+}
+
+#define VIDEO_OBJECT_START_CODE 0x00000100
+#define VIDEO_OBJECT_LAYER_START_CODE 0x00000120
+#define VISUAL_OBJECT_START_CODE 0x000001b5
+#define VOP_START_CODE 0x000001b6
+
+static int mpeg4video_probe(AVProbeData *probe_packet)
+{
+ uint32_t temp_buffer= -1;
+ int VO=0, VOL=0, VOP = 0, VISO = 0;
+ int i;
+
+ for(i=0; i<probe_packet->buf_size; i++){
+ temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
+ if ((temp_buffer & 0xffffff00) == 0x100) {
+ switch(temp_buffer){
+ case VOP_START_CODE: VOP++; break;
+ case VISUAL_OBJECT_START_CODE: VISO++; break;
+ }
+ switch(temp_buffer & 0xfffffff0){
+ case VIDEO_OBJECT_START_CODE: VO++; break;
+ case VIDEO_OBJECT_LAYER_START_CODE: VOL++; break;
+ }
+ }
+ }
+
+ if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0)
+ return AVPROBE_SCORE_MAX/2;
+ return 0;
+}
+
+static int h263_probe(AVProbeData *p)
+{
+ int code;
+ const uint8_t *d;
+
+ if (p->buf_size < 6)
+ return 0;
+ d = p->buf;
+ code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
+ if (code == 0x20) {
+ return 50;
+ }
+ return 0;
+}
+
+static int h261_probe(AVProbeData *p)
+{
+ int code;
+ const uint8_t *d;
+
+ if (p->buf_size < 6)
+ return 0;
+ d = p->buf;
+ code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);
+ if (code == 0x10) {
+ return 50;
+ }
+ return 0;
+}
+
+AVInputFormat shorten_demuxer = {
+ "shn",
+ "raw shorten",
+ 0,
+ NULL,
+ shorten_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .extensions = "shn",
+};
+
+AVInputFormat flac_demuxer = {
+ "flac",
+ "raw flac",
+ 0,
+ NULL,
+ flac_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .extensions = "flac",
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat flac_muxer = {
+ "flac",
+ "raw flac",
+ "audio/x-flac",
+ "flac",
+ 0,
+ CODEC_ID_FLAC,
+ 0,
+ flac_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+AVInputFormat ac3_demuxer = {
+ "ac3",
+ "raw ac3",
+ 0,
+ NULL,
+ ac3_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .extensions = "ac3",
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat ac3_muxer = {
+ "ac3",
+ "raw ac3",
+ "audio/x-ac3",
+ "ac3",
+ 0,
+ CODEC_ID_AC3,
+ 0,
+ raw_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+AVInputFormat dts_demuxer = {
+ "dts",
+ "raw dts",
+ 0,
+ NULL,
+ dts_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .extensions = "dts",
+};
+
+AVInputFormat aac_demuxer = {
+ "aac",
+ "ADTS AAC",
+ 0,
+ NULL,
+ aac_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .extensions = "aac",
+};
+
+AVInputFormat h261_demuxer = {
+ "h261",
+ "raw h261",
+ 0,
+ h261_probe,
+ video_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .extensions = "h261",
+ .value = CODEC_ID_H261,
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat h261_muxer = {
+ "h261",
+ "raw h261",
+ "video/x-h261",
+ "h261",
+ 0,
+ 0,
+ CODEC_ID_H261,
+ raw_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+AVInputFormat h263_demuxer = {
+ "h263",
+ "raw h263",
+ 0,
+ h263_probe,
+ video_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+// .extensions = "h263", //FIXME remove after writing mpeg4_probe
+ .value = CODEC_ID_H263,
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat h263_muxer = {
+ "h263",
+ "raw h263",
+ "video/x-h263",
+ "h263",
+ 0,
+ 0,
+ CODEC_ID_H263,
+ raw_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+AVInputFormat m4v_demuxer = {
+ "m4v",
+ "raw MPEG4 video format",
+ 0,
+ mpeg4video_probe, /** probing for mpeg4 data */
+ video_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .extensions = "m4v", //FIXME remove after writing mpeg4_probe
+ .value = CODEC_ID_MPEG4,
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat m4v_muxer = {
+ "m4v",
+ "raw MPEG4 video format",
+ NULL,
+ "m4v",
+ 0,
+ CODEC_ID_NONE,
+ CODEC_ID_MPEG4,
+ raw_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+AVInputFormat h264_demuxer = {
+ "h264",
+ "raw H264 video format",
+ 0,
+ NULL /*mpegvideo_probe*/,
+ video_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
+ .value = CODEC_ID_H264,
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat h264_muxer = {
+ "h264",
+ "raw H264 video format",
+ NULL,
+ "h264",
+ 0,
+ CODEC_ID_NONE,
+ CODEC_ID_H264,
+ raw_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+AVInputFormat mpegvideo_demuxer = {
+ "mpegvideo",
+ "MPEG video",
+ 0,
+ mpegvideo_probe,
+ video_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .value = CODEC_ID_MPEG1VIDEO,
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat mpeg1video_muxer = {
+ "mpeg1video",
+ "MPEG video",
+ "video/x-mpeg",
+ "mpg,mpeg,m1v",
+ 0,
+ 0,
+ CODEC_ID_MPEG1VIDEO,
+ raw_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat mpeg2video_muxer = {
+ "mpeg2video",
+ "MPEG2 video",
+ NULL,
+ "m2v",
+ 0,
+ 0,
+ CODEC_ID_MPEG2VIDEO,
+ raw_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+AVInputFormat mjpeg_demuxer = {
+ "mjpeg",
+ "MJPEG video",
+ 0,
+ NULL,
+ video_read_header,
+ raw_read_partial_packet,
+ raw_read_close,
+ .extensions = "mjpg,mjpeg",
+ .value = CODEC_ID_MJPEG,
+};
+
+AVInputFormat ingenient_demuxer = {
+ "ingenient",
+ "Ingenient MJPEG",
+ 0,
+ NULL,
+ video_read_header,
+ ingenient_read_packet,
+ raw_read_close,
+ .extensions = "cgi", // FIXME
+ .value = CODEC_ID_MJPEG,
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat mjpeg_muxer = {
+ "mjpeg",
+ "MJPEG video",
+ "video/x-mjpeg",
+ "mjpg,mjpeg",
+ 0,
+ 0,
+ CODEC_ID_MJPEG,
+ raw_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+/* pcm formats */
+
+#define PCMINPUTDEF(name, long_name, ext, codec) \
+AVInputFormat pcm_ ## name ## _demuxer = {\
+ #name,\
+ long_name,\
+ 0,\
+ NULL,\
+ raw_read_header,\
+ raw_read_packet,\
+ raw_read_close,\
+ pcm_read_seek,\
+ .extensions = ext,\
+ .value = codec,\
+};
+
+#define PCMOUTPUTDEF(name, long_name, ext, codec) \
+AVOutputFormat pcm_ ## name ## _muxer = {\
+ #name,\
+ long_name,\
+ NULL,\
+ ext,\
+ 0,\
+ codec,\
+ 0,\
+ raw_write_header,\
+ raw_write_packet,\
+ raw_write_trailer,\
+ .flags= AVFMT_NOTIMESTAMPS,\
+};
+
+
+#if !defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
+#define PCMDEF(name, long_name, ext, codec) \
+ PCMINPUTDEF(name, long_name, ext, codec)
+#elif defined(CONFIG_MUXERS) && !defined(CONFIG_DEMUXERS)
+#define PCMDEF(name, long_name, ext, codec) \
+ PCMOUTPUTDEF(name, long_name, ext, codec)
+#elif defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
+#define PCMDEF(name, long_name, ext, codec) \
+ PCMINPUTDEF(name, long_name, ext, codec)\
+ PCMOUTPUTDEF(name, long_name, ext, codec)
+#else
+#define PCMDEF(name, long_name, ext, codec)
+#endif
+
+#ifdef WORDS_BIGENDIAN
+#define BE_DEF(s) s
+#define LE_DEF(s) NULL
+#else
+#define BE_DEF(s) NULL
+#define LE_DEF(s) s
+#endif
+
+
+PCMDEF(s16le, "pcm signed 16 bit little endian format",
+ LE_DEF("sw"), CODEC_ID_PCM_S16LE)
+
+PCMDEF(s16be, "pcm signed 16 bit big endian format",
+ BE_DEF("sw"), CODEC_ID_PCM_S16BE)
+
+PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
+ LE_DEF("uw"), CODEC_ID_PCM_U16LE)
+
+PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
+ BE_DEF("uw"), CODEC_ID_PCM_U16BE)
+
+PCMDEF(s8, "pcm signed 8 bit format",
+ "sb", CODEC_ID_PCM_S8)
+
+PCMDEF(u8, "pcm unsigned 8 bit format",
+ "ub", CODEC_ID_PCM_U8)
+
+PCMDEF(mulaw, "pcm mu law format",
+ "ul", CODEC_ID_PCM_MULAW)
+
+PCMDEF(alaw, "pcm A law format",
+ "al", CODEC_ID_PCM_ALAW)
+
+static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ int packet_size, ret, width, height;
+ AVStream *st = s->streams[0];
+
+ width = st->codec->width;
+ height = st->codec->height;
+
+ packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
+ if (packet_size < 0)
+ return -1;
+
+ ret= av_get_packet(&s->pb, pkt, packet_size);
+
+ pkt->stream_index = 0;
+ if (ret != packet_size) {
+ return AVERROR_IO;
+ } else {
+ return 0;
+ }
+}
+
+AVInputFormat rawvideo_demuxer = {
+ "rawvideo",
+ "raw video format",
+ 0,
+ NULL,
+ raw_read_header,
+ rawvideo_read_packet,
+ raw_read_close,
+ .extensions = "yuv,cif,qcif",
+ .value = CODEC_ID_RAWVIDEO,
+};
+
+#ifdef CONFIG_MUXERS
+AVOutputFormat rawvideo_muxer = {
+ "rawvideo",
+ "raw video format",
+ NULL,
+ "yuv",
+ 0,
+ CODEC_ID_NONE,
+ CODEC_ID_RAWVIDEO,
+ raw_write_header,
+ raw_write_packet,
+ raw_write_trailer,
+ .flags= AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
+
+#ifdef CONFIG_MUXERS
+static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
+{
+ return 0;
+}
+
+AVOutputFormat null_muxer = {
+ "null",
+ "null video format",
+ NULL,
+ NULL,
+ 0,
+#ifdef WORDS_BIGENDIAN
+ CODEC_ID_PCM_S16BE,
+#else
+ CODEC_ID_PCM_S16LE,
+#endif
+ CODEC_ID_RAWVIDEO,
+ raw_write_header,
+ null_write_packet,
+ raw_write_trailer,
+ .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
+};
+#endif //CONFIG_MUXERS
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-26 05:09:33 +0000