diff options
Diffstat (limited to 'ffmpeg1/libavformat/wvenc.c')
| -rw-r--r-- | ffmpeg1/libavformat/wvenc.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/ffmpeg1/libavformat/wvenc.c b/ffmpeg1/libavformat/wvenc.c deleted file mode 100644 index 03d471e..0000000 --- a/ffmpeg1/libavformat/wvenc.c +++ /dev/null @@ -1,144 +0,0 @@ -/* - * WavPack muxer - * 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/intreadwrite.h" -#include "avformat.h" -#include "internal.h" -#include "avio_internal.h" -#include "apetag.h" - -#define WV_EXTRA_SIZE 12 -#define WV_END_BLOCK 0x1000 - -typedef struct{ - uint32_t duration; -} WVMuxContext; - -static int write_header(AVFormatContext *s) -{ - AVCodecContext *codec = s->streams[0]->codec; - - if (s->nb_streams > 1) { - av_log(s, AV_LOG_ERROR, "only one stream is supported\n"); - return AVERROR(EINVAL); - } - if (codec->codec_id != AV_CODEC_ID_WAVPACK) { - av_log(s, AV_LOG_ERROR, "unsupported codec\n"); - return AVERROR(EINVAL); - } - if (codec->extradata_size > 0) { - avpriv_report_missing_feature(s, "remuxing from matroska container"); - return AVERROR_PATCHWELCOME; - } - avpriv_set_pts_info(s->streams[0], 64, 1, codec->sample_rate); - - return 0; -} - -static int write_packet(AVFormatContext *s, AVPacket *pkt) -{ - WVMuxContext *wc = s->priv_data; - AVCodecContext *codec = s->streams[0]->codec; - AVIOContext *pb = s->pb; - uint64_t size; - uint32_t flags; - uint32_t left = pkt->size; - uint8_t *ptr = pkt->data; - int off = codec->channels > 2 ? 4 : 0; - - /* FIXME: Simplify decoder/demuxer so bellow code can support midstream - * change of stream parameters */ - wc->duration += pkt->duration; - ffio_wfourcc(pb, "wvpk"); - if (off) { - size = AV_RL32(pkt->data); - if (size <= 12) - return AVERROR_INVALIDDATA; - size -= 12; - } else { - size = pkt->size; - } - - if (size + off > left) - return AVERROR_INVALIDDATA; - - avio_wl32(pb, size + 12); - avio_wl16(pb, 0x410); - avio_w8(pb, 0); - avio_w8(pb, 0); - avio_wl32(pb, -1); - avio_wl32(pb, pkt->pts); - ptr += off; left -= off; - flags = AV_RL32(ptr + 4); - avio_write(pb, ptr, size); - ptr += size; left -= size; - - while (!(flags & WV_END_BLOCK) && - (left >= 4 + WV_EXTRA_SIZE)) { - ffio_wfourcc(pb, "wvpk"); - size = AV_RL32(ptr); - ptr += 4; left -= 4; - if (size < 24 || size - 24 > left) - return AVERROR_INVALIDDATA; - avio_wl32(pb, size); - avio_wl16(pb, 0x410); - avio_w8(pb, 0); - avio_w8(pb, 0); - avio_wl32(pb, -1); - avio_wl32(pb, pkt->pts); - flags = AV_RL32(ptr + 4); - avio_write(pb, ptr, WV_EXTRA_SIZE); - ptr += WV_EXTRA_SIZE; left -= WV_EXTRA_SIZE; - avio_write(pb, ptr, size - 24); - ptr += size - 24; left -= size - 24; - } - avio_flush(pb); - - return 0; -} - -static int write_trailer(AVFormatContext *s) -{ - WVMuxContext *wc = s->priv_data; - AVIOContext *pb = s->pb; - - ff_ape_write(s); - - if (pb->seekable) { - avio_seek(pb, 12, SEEK_SET); - avio_wl32(pb, wc->duration); - avio_flush(pb); - } - - return 0; -} - -AVOutputFormat ff_wv_muxer = { - .name = "wv", - .long_name = NULL_IF_CONFIG_SMALL("WavPack"), - .priv_data_size = sizeof(WVMuxContext), - .extensions = "wv", - .audio_codec = AV_CODEC_ID_WAVPACK, - .video_codec = AV_CODEC_ID_NONE, - .write_header = write_header, - .write_packet = write_packet, - .write_trailer = write_trailer, -}; |