mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
c1e439d7e9
It is not uncommon to find code where the caller thinks to know better what the return value should be than the callee. E.g. something like "if (av_new_packet(pkt, size) < 0) return AVERROR(ENOMEM);". This commit changes several instances of this to instead forward the actual error. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
|
|
* AFC demuxer
|
|
* Copyright (c) 2012 Paul B Mahol
|
|
*
|
|
* 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 "libavutil/channel_layout.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
|
|
typedef struct AFCDemuxContext {
|
|
int64_t data_end;
|
|
} AFCDemuxContext;
|
|
|
|
static int afc_read_header(AVFormatContext *s)
|
|
{
|
|
AFCDemuxContext *c = s->priv_data;
|
|
AVStream *st;
|
|
int ret;
|
|
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
st->codecpar->codec_id = AV_CODEC_ID_ADPCM_AFC;
|
|
st->codecpar->channels = 2;
|
|
st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
|
|
|
|
if ((ret = ff_alloc_extradata(st->codecpar, 1)) < 0)
|
|
return ret;
|
|
st->codecpar->extradata[0] = 8 * st->codecpar->channels;
|
|
|
|
c->data_end = avio_rb32(s->pb) + 32LL;
|
|
st->duration = avio_rb32(s->pb);
|
|
st->codecpar->sample_rate = avio_rb16(s->pb);
|
|
avio_skip(s->pb, 22);
|
|
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int afc_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
AFCDemuxContext *c = s->priv_data;
|
|
int64_t size;
|
|
int ret;
|
|
|
|
size = FFMIN(c->data_end - avio_tell(s->pb), 18 * 128);
|
|
if (size <= 0)
|
|
return AVERROR_EOF;
|
|
|
|
ret = av_get_packet(s->pb, pkt, size);
|
|
pkt->stream_index = 0;
|
|
return ret;
|
|
}
|
|
|
|
AVInputFormat ff_afc_demuxer = {
|
|
.name = "afc",
|
|
.long_name = NULL_IF_CONFIG_SMALL("AFC"),
|
|
.priv_data_size = sizeof(AFCDemuxContext),
|
|
.read_header = afc_read_header,
|
|
.read_packet = afc_read_packet,
|
|
.extensions = "afc",
|
|
.flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK,
|
|
};
|