diff options
Diffstat (limited to 'ffmpeg1/libavformat/soxdec.c')
| -rw-r--r-- | ffmpeg1/libavformat/soxdec.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/ffmpeg1/libavformat/soxdec.c b/ffmpeg1/libavformat/soxdec.c deleted file mode 100644 index aec4284..0000000 --- a/ffmpeg1/libavformat/soxdec.c +++ /dev/null @@ -1,134 +0,0 @@ -/* - * SoX native format demuxer - * Copyright (c) 2009 Daniel Verkamp <daniel@drv.nu> - * - * Based on libSoX sox-fmt.c - * Copyright (c) 2008 robs@users.sourceforge.net - * - * 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 - */ - -/** - * @file - * SoX native format demuxer - * @author Daniel Verkamp - * @see http://wiki.multimedia.cx/index.php?title=SoX_native_intermediate_format - */ - -#include "libavutil/intreadwrite.h" -#include "libavutil/intfloat.h" -#include "libavutil/dict.h" -#include "avformat.h" -#include "internal.h" -#include "pcm.h" -#include "sox.h" - -static int sox_probe(AVProbeData *p) -{ - if (AV_RL32(p->buf) == SOX_TAG || AV_RB32(p->buf) == SOX_TAG) - return AVPROBE_SCORE_MAX; - return 0; -} - -static int sox_read_header(AVFormatContext *s) -{ - AVIOContext *pb = s->pb; - unsigned header_size, comment_size; - double sample_rate, sample_rate_frac; - AVStream *st; - - st = avformat_new_stream(s, NULL); - if (!st) - return AVERROR(ENOMEM); - - st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - - if (avio_rl32(pb) == SOX_TAG) { - st->codec->codec_id = AV_CODEC_ID_PCM_S32LE; - header_size = avio_rl32(pb); - avio_skip(pb, 8); /* sample count */ - sample_rate = av_int2double(avio_rl64(pb)); - st->codec->channels = avio_rl32(pb); - comment_size = avio_rl32(pb); - } else { - st->codec->codec_id = AV_CODEC_ID_PCM_S32BE; - header_size = avio_rb32(pb); - avio_skip(pb, 8); /* sample count */ - sample_rate = av_int2double(avio_rb64(pb)); - st->codec->channels = avio_rb32(pb); - comment_size = avio_rb32(pb); - } - - if (comment_size > 0xFFFFFFFFU - SOX_FIXED_HDR - 4U) { - av_log(s, AV_LOG_ERROR, "invalid comment size (%u)\n", comment_size); - return AVERROR_INVALIDDATA; - } - - if (sample_rate <= 0 || sample_rate > INT_MAX) { - av_log(s, AV_LOG_ERROR, "invalid sample rate (%f)\n", sample_rate); - return AVERROR_INVALIDDATA; - } - - sample_rate_frac = sample_rate - floor(sample_rate); - if (sample_rate_frac) - av_log(s, AV_LOG_WARNING, - "truncating fractional part of sample rate (%f)\n", - sample_rate_frac); - - if ((header_size + 4) & 7 || header_size < SOX_FIXED_HDR + comment_size - || st->codec->channels > 65535) /* Reserve top 16 bits */ { - av_log(s, AV_LOG_ERROR, "invalid header\n"); - return AVERROR_INVALIDDATA; - } - - if (comment_size && comment_size < UINT_MAX) { - char *comment = av_malloc(comment_size+1); - if(!comment) - return AVERROR(ENOMEM); - if (avio_read(pb, comment, comment_size) != comment_size) { - av_freep(&comment); - return AVERROR(EIO); - } - comment[comment_size] = 0; - - av_dict_set(&s->metadata, "comment", comment, - AV_DICT_DONT_STRDUP_VAL); - } - - avio_skip(pb, header_size - SOX_FIXED_HDR - comment_size); - - st->codec->sample_rate = sample_rate; - st->codec->bits_per_coded_sample = 32; - st->codec->bit_rate = st->codec->sample_rate * - st->codec->bits_per_coded_sample * - st->codec->channels; - st->codec->block_align = st->codec->bits_per_coded_sample * - st->codec->channels / 8; - - avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); - - return 0; -} - -AVInputFormat ff_sox_demuxer = { - .name = "sox", - .long_name = NULL_IF_CONFIG_SMALL("SoX native"), - .read_probe = sox_probe, - .read_header = sox_read_header, - .read_packet = ff_pcm_read_packet, - .read_seek = ff_pcm_read_seek, -}; |