diff options
Diffstat (limited to 'ffmpeg/libavformat/apc.c')
| -rw-r--r-- | ffmpeg/libavformat/apc.c | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/ffmpeg/libavformat/apc.c b/ffmpeg/libavformat/apc.c deleted file mode 100644 index 21bb514..0000000 --- a/ffmpeg/libavformat/apc.c +++ /dev/null @@ -1,92 +0,0 @@ -/* - * CRYO APC audio format demuxer - * Copyright (c) 2007 Anssi Hannula <anssi.hannula@gmail.com> - * - * 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 <string.h> - -#include "libavutil/channel_layout.h" -#include "avformat.h" -#include "internal.h" - -static int apc_probe(AVProbeData *p) -{ - if (!strncmp(p->buf, "CRYO_APC", 8)) - return AVPROBE_SCORE_MAX; - - return 0; -} - -static int apc_read_header(AVFormatContext *s) -{ - AVIOContext *pb = s->pb; - AVStream *st; - - avio_rl32(pb); /* CRYO */ - avio_rl32(pb); /* _APC */ - avio_rl32(pb); /* 1.20 */ - - st = avformat_new_stream(s, NULL); - if (!st) - return AVERROR(ENOMEM); - - st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_APC; - - avio_rl32(pb); /* number of samples */ - st->codec->sample_rate = avio_rl32(pb); - - /* initial predictor values for adpcm decoder */ - if (ff_get_extradata(st->codec, pb, 2 * 4) < 0) - return AVERROR(ENOMEM); - - if (avio_rl32(pb)) { - 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; - } - - st->codec->bits_per_coded_sample = 4; - st->codec->bit_rate = st->codec->bits_per_coded_sample * st->codec->channels - * st->codec->sample_rate; - st->codec->block_align = 1; - - return 0; -} - -#define MAX_READ_SIZE 4096 - -static int apc_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - if (av_get_packet(s->pb, pkt, MAX_READ_SIZE) <= 0) - return AVERROR(EIO); - pkt->flags &= ~AV_PKT_FLAG_CORRUPT; - pkt->stream_index = 0; - return 0; -} - -AVInputFormat ff_apc_demuxer = { - .name = "apc", - .long_name = NULL_IF_CONFIG_SMALL("CRYO APC"), - .read_probe = apc_probe, - .read_header = apc_read_header, - .read_packet = apc_read_packet, -}; |
