* id RoQ (.roq) File Demuxer
* Copyright (c) 2003 The ffmpeg Project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
* http://www.csse.monash.edu.au/~timf/
*/
+#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"
+#include "internal.h"
#define RoQ_MAGIC_NUMBER 0x1084
#define RoQ_CHUNK_PREAMBLE_SIZE 8
typedef struct RoqDemuxContext {
+ int frame_rate;
int width;
int height;
int audio_channels;
return AVPROBE_SCORE_MAX;
}
-static int roq_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
+static int roq_read_header(AVFormatContext *s)
{
RoqDemuxContext *roq = s->priv_data;
- ByteIOContext *pb = s->pb;
- int framerate;
- AVStream *st;
+ AVIOContext *pb = s->pb;
unsigned char preamble[RoQ_CHUNK_PREAMBLE_SIZE];
/* get the main header */
- if (get_buffer(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) !=
+ if (avio_read(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) !=
RoQ_CHUNK_PREAMBLE_SIZE)
return AVERROR(EIO);
- framerate = AV_RL16(&preamble[6]);
+ roq->frame_rate = AV_RL16(&preamble[6]);
/* init private context parameters */
roq->width = roq->height = roq->audio_channels = roq->video_pts =
roq->audio_frame_count = 0;
roq->audio_stream_index = -1;
+ roq->video_stream_index = -1;
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR(ENOMEM);
- av_set_pts_info(st, 63, 1, framerate);
- roq->video_stream_index = st->index;
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_ROQ;
- st->codec->codec_tag = 0; /* no fourcc */
+ s->ctx_flags |= AVFMTCTX_NOHEADER;
return 0;
}
AVPacket *pkt)
{
RoqDemuxContext *roq = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
int ret = 0;
unsigned int chunk_size;
unsigned int chunk_type;
while (!packet_read) {
- if (url_feof(s->pb))
+ if (s->pb->eof_reached)
return AVERROR(EIO);
/* get the next chunk preamble */
- if ((ret = get_buffer(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE)) !=
+ if ((ret = avio_read(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE)) !=
RoQ_CHUNK_PREAMBLE_SIZE)
return AVERROR(EIO);
switch (chunk_type) {
case RoQ_INFO:
- if (!roq->width || !roq->height) {
- AVStream *st = s->streams[roq->video_stream_index];
- if (get_buffer(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) != RoQ_CHUNK_PREAMBLE_SIZE)
+ if (roq->video_stream_index == -1) {
+ AVStream *st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+ avpriv_set_pts_info(st, 63, 1, roq->frame_rate);
+ roq->video_stream_index = st->index;
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = AV_CODEC_ID_ROQ;
+ st->codec->codec_tag = 0; /* no fourcc */
+
+ if (avio_read(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) != RoQ_CHUNK_PREAMBLE_SIZE)
return AVERROR(EIO);
st->codec->width = roq->width = AV_RL16(preamble);
st->codec->height = roq->height = AV_RL16(preamble + 2);
break;
}
/* don't care about this chunk anymore */
- url_fseek(pb, RoQ_CHUNK_PREAMBLE_SIZE, SEEK_CUR);
+ avio_skip(pb, RoQ_CHUNK_PREAMBLE_SIZE);
break;
case RoQ_QUAD_CODEBOOK:
/* packet needs to contain both this codebook and next VQ chunk */
- codebook_offset = url_ftell(pb) - RoQ_CHUNK_PREAMBLE_SIZE;
+ codebook_offset = avio_tell(pb) - RoQ_CHUNK_PREAMBLE_SIZE;
codebook_size = chunk_size;
- url_fseek(pb, codebook_size, SEEK_CUR);
- if (get_buffer(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) !=
+ avio_skip(pb, codebook_size);
+ if (avio_read(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) !=
RoQ_CHUNK_PREAMBLE_SIZE)
return AVERROR(EIO);
chunk_size = AV_RL32(&preamble[2]) + RoQ_CHUNK_PREAMBLE_SIZE * 2 +
codebook_size;
/* rewind */
- url_fseek(pb, codebook_offset, SEEK_SET);
+ avio_seek(pb, codebook_offset, SEEK_SET);
/* load up the packet */
ret= av_get_packet(pb, pkt, chunk_size);
case RoQ_SOUND_MONO:
case RoQ_SOUND_STEREO:
if (roq->audio_stream_index == -1) {
- AVStream *st = av_new_stream(s, 1);
+ AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
- av_set_pts_info(st, 32, 1, RoQ_AUDIO_SAMPLE_RATE);
+ avpriv_set_pts_info(st, 32, 1, RoQ_AUDIO_SAMPLE_RATE);
roq->audio_stream_index = st->index;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- st->codec->codec_id = CODEC_ID_ROQ_DPCM;
+ st->codec->codec_id = AV_CODEC_ID_ROQ_DPCM;
st->codec->codec_tag = 0; /* no tag */
- st->codec->channels = roq->audio_channels = chunk_type == RoQ_SOUND_STEREO ? 2 : 1;
+ if (chunk_type == RoQ_SOUND_STEREO) {
+ st->codec->channels = 2;
+ st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
+ } else {
+ st->codec->channels = 1;
+ st->codec->channel_layout = AV_CH_LAYOUT_MONO;
+ }
+ roq->audio_channels = st->codec->channels;
st->codec->sample_rate = RoQ_AUDIO_SAMPLE_RATE;
st->codec->bits_per_coded_sample = 16;
st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
roq->audio_frame_count += (chunk_size / roq->audio_channels);
}
- pkt->pos= url_ftell(pb);
- ret = get_buffer(pb, pkt->data + RoQ_CHUNK_PREAMBLE_SIZE,
+ pkt->pos= avio_tell(pb);
+ ret = avio_read(pb, pkt->data + RoQ_CHUNK_PREAMBLE_SIZE,
chunk_size);
if (ret != chunk_size)
ret = AVERROR(EIO);
default:
av_log(s, AV_LOG_ERROR, " unknown RoQ chunk (%04X)\n", chunk_type);
return AVERROR_INVALIDDATA;
- break;
}
}
}
AVInputFormat ff_roq_demuxer = {
- "RoQ",
- NULL_IF_CONFIG_SMALL("id RoQ format"),
- sizeof(RoqDemuxContext),
- roq_probe,
- roq_read_header,
- roq_read_packet,
+ .name = "roq",
+ .long_name = NULL_IF_CONFIG_SMALL("id RoQ"),
+ .priv_data_size = sizeof(RoqDemuxContext),
+ .read_probe = roq_probe,
+ .read_header = roq_read_header,
+ .read_packet = roq_read_packet,
};
projects / ffmpeg / blobdiff