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FFmpeg/libavformat/wvenc.c

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/*
* WavPack muxer
* Copyright (c) 2013 Konstantin Shishkov <kostya.shishkov@gmail.com>
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* 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
*/
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#include "libavutil/attributes.h"
#include "apetag.h"
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#include "avformat.h"
#include "wv.h"
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typedef struct WvMuxContext {
int64_t samples;
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} WvMuxContext;
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static av_cold int wv_write_header(AVFormatContext *ctx)
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{
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if (ctx->nb_streams > 1 ||
ctx->streams[0]->codec->codec_id != AV_CODEC_ID_WAVPACK) {
av_log(ctx, AV_LOG_ERROR, "This muxer only supports a single WavPack stream.\n");
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return AVERROR(EINVAL);
}
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return 0;
}
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static int wv_write_packet(AVFormatContext *ctx, AVPacket *pkt)
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{
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WvMuxContext *s = ctx->priv_data;
WvHeader header;
int ret;
if (pkt->size < WV_HEADER_SIZE ||
(ret = ff_wv_parse_header(&header, pkt->data)) < 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid WavPack packet.\n");
return AVERROR(EINVAL);
}
s->samples += header.samples;
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avio_write(ctx->pb, pkt->data, pkt->size);
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return 0;
}
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static av_cold int wv_write_trailer(AVFormatContext *ctx)
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{
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WvMuxContext *s = ctx->priv_data;
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/* update total number of samples in the first block */
if (ctx->pb->seekable && s->samples &&
s->samples < UINT32_MAX) {
int64_t pos = avio_tell(ctx->pb);
avio_seek(ctx->pb, 12, SEEK_SET);
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avio_wl32(ctx->pb, s->samples);
avio_seek(ctx->pb, pos, SEEK_SET);
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}
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ff_ape_write_tag(ctx);
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return 0;
}
AVOutputFormat ff_wv_muxer = {
.name = "wv",
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.long_name = NULL_IF_CONFIG_SMALL("raw WavPack"),
.mime_type = "audio/x-wavpack",
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.extensions = "wv",
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.priv_data_size = sizeof(WvMuxContext),
Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85' * commit '36ef5369ee9b336febc2c270f8718cec4476cb85': Replace all CODEC_ID_* with AV_CODEC_ID_* lavc: add AV prefix to codec ids. Conflicts: doc/APIchanges doc/examples/decoding_encoding.c doc/examples/muxing.c ffmpeg.c ffprobe.c ffserver.c libavcodec/8svx.c libavcodec/avcodec.h libavcodec/dnxhd_parser.c libavcodec/dvdsubdec.c libavcodec/error_resilience.c libavcodec/h263dec.c libavcodec/libvorbisenc.c libavcodec/mjpeg_parser.c libavcodec/mjpegenc.c libavcodec/mpeg12.c libavcodec/mpeg4videodec.c libavcodec/mpegvideo.c libavcodec/mpegvideo_enc.c libavcodec/pcm.c libavcodec/r210dec.c libavcodec/utils.c libavcodec/v210dec.c libavcodec/version.h libavdevice/alsa-audio-dec.c libavdevice/bktr.c libavdevice/v4l2.c libavformat/asfdec.c libavformat/asfenc.c libavformat/avformat.h libavformat/avidec.c libavformat/caf.c libavformat/electronicarts.c libavformat/flacdec.c libavformat/flvdec.c libavformat/flvenc.c libavformat/framecrcenc.c libavformat/img2.c libavformat/img2dec.c libavformat/img2enc.c libavformat/ipmovie.c libavformat/isom.c libavformat/matroska.c libavformat/matroskadec.c libavformat/matroskaenc.c libavformat/mov.c libavformat/movenc.c libavformat/mp3dec.c libavformat/mpeg.c libavformat/mpegts.c libavformat/mxf.c libavformat/mxfdec.c libavformat/mxfenc.c libavformat/nsvdec.c libavformat/nut.c libavformat/oggenc.c libavformat/pmpdec.c libavformat/rawdec.c libavformat/rawenc.c libavformat/riff.c libavformat/sdp.c libavformat/utils.c libavformat/vocenc.c libavformat/wtv.c libavformat/xmv.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
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.audio_codec = AV_CODEC_ID_WAVPACK,
.video_codec = AV_CODEC_ID_NONE,
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.write_header = wv_write_header,
.write_packet = wv_write_packet,
.write_trailer = wv_write_trailer,
.flags = AVFMT_NOTIMESTAMPS,
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};