diff options
author | Daniel Verkamp <daniel@drv.nu> | 2009-05-30 22:51:15 +0400 |
---|---|---|
committer | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2009-05-30 22:51:15 +0400 |
commit | cbfe5bee2e20df90c581937b2cb4b1535acbf726 (patch) | |
tree | be4422746892b4030d55854441c6c54833986f33 /libavformat | |
parent | bb790168516b4a864ee8743c5900f8a6e495e1ce (diff) |
Implement SoX native format muxer and demuxer.
Patch by Daniel Verkamp $firstname@drv DOT nu.
Originally committed as revision 18998 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat')
-rw-r--r-- | libavformat/Makefile | 2 | ||||
-rw-r--r-- | libavformat/allformats.c | 1 | ||||
-rw-r--r-- | libavformat/sox.h | 29 | ||||
-rw-r--r-- | libavformat/soxdec.c | 149 | ||||
-rw-r--r-- | libavformat/soxenc.c | 126 |
5 files changed, 307 insertions, 0 deletions
diff --git a/libavformat/Makefile b/libavformat/Makefile index 0e35318d33..09db41eeed 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -204,6 +204,8 @@ OBJS-$(CONFIG_SHORTEN_DEMUXER) += raw.o id3v2.o OBJS-$(CONFIG_SIFF_DEMUXER) += siff.o OBJS-$(CONFIG_SMACKER_DEMUXER) += smacker.o OBJS-$(CONFIG_SOL_DEMUXER) += sol.o raw.o +OBJS-$(CONFIG_SOX_DEMUXER) += soxdec.o +OBJS-$(CONFIG_SOX_MUXER) += soxenc.o OBJS-$(CONFIG_STR_DEMUXER) += psxstr.o OBJS-$(CONFIG_SWF_DEMUXER) += swfdec.o OBJS-$(CONFIG_SWF_MUXER) += swfenc.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index 822682baf4..ad4763158c 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -177,6 +177,7 @@ void av_register_all(void) REGISTER_DEMUXER (SIFF, siff); REGISTER_DEMUXER (SMACKER, smacker); REGISTER_DEMUXER (SOL, sol); + REGISTER_MUXDEMUX (SOX, sox); REGISTER_DEMUXER (STR, str); REGISTER_MUXDEMUX (SWF, swf); REGISTER_MUXER (TG2, tg2); diff --git a/libavformat/sox.h b/libavformat/sox.h new file mode 100644 index 0000000000..f4a12e93ff --- /dev/null +++ b/libavformat/sox.h @@ -0,0 +1,29 @@ +/* + * SoX native format common data + * Copyright (c) 2009 Daniel Verkamp <daniel@drv.nu> + * + * 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 + */ + +#ifndef AVFORMAT_SOX_H +#define AVFORMAT_SOX_H + +#define SOX_FIXED_HDR (4 + 8 + 8 + 4 + 4) /**< Size of fixed header without magic */ + +#define SOX_TAG MKTAG('.', 'S', 'o', 'X') + +#endif /* AVFORMAT_SOX_H */ diff --git a/libavformat/soxdec.c b/libavformat/soxdec.c new file mode 100644 index 0000000000..0a30b9cb48 --- /dev/null +++ b/libavformat/soxdec.c @@ -0,0 +1,149 @@ +/* + * 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 + */ + +/** + * SoX native format demuxer + * @file libavformat/soxdec.c + * @author Daniel Verkamp + * @sa http://wiki.multimedia.cx/index.php?title=SoX_native_intermediate_format + */ + +#include "libavutil/intreadwrite.h" +#include "avformat.h" +#include "raw.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, + AVFormatParameters *ap) +{ + ByteIOContext *pb = s->pb; + unsigned header_size, comment_size; + double sample_rate, sample_rate_frac; + AVStream *st; + + st = av_new_stream(s, 0); + if (!st) + return AVERROR(ENOMEM); + + st->codec->codec_type = CODEC_TYPE_AUDIO; + + if (get_le32(pb) == SOX_TAG) { + st->codec->codec_id = CODEC_ID_PCM_S32LE; + header_size = get_le32(pb); + url_fskip(pb, 8); /* sample count */ + sample_rate = av_int2dbl(get_le64(pb)); + st->codec->channels = get_le32(pb); + comment_size = get_le32(pb); + } else { + st->codec->codec_id = CODEC_ID_PCM_S32BE; + header_size = get_be32(pb); + url_fskip(pb, 8); /* sample count */ + sample_rate = av_int2dbl(get_be64(pb)); + st->codec->channels = get_be32(pb); + comment_size = get_be32(pb); + } + + if (comment_size > 0xFFFFFFFFU - SOX_FIXED_HDR - 4U) { + av_log(s, AV_LOG_ERROR, "invalid comment size (%u)\n", comment_size); + return -1; + } + + if (sample_rate <= 0 || sample_rate > INT_MAX) { + av_log(s, AV_LOG_ERROR, "invalid sample rate (%f)\n", sample_rate); + return -1; + } + + 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 -1; + } + + if (comment_size && + comment_size + FF_INPUT_BUFFER_PADDING_SIZE >= comment_size) { + char *comment = av_mallocz(comment_size + FF_INPUT_BUFFER_PADDING_SIZE); + if (get_buffer(pb, comment, comment_size) != comment_size) { + av_freep(&comment); + return AVERROR_IO; + } + av_metadata_set(&s->metadata, "comment", comment); + av_freep(&comment); + } + + url_fskip(pb, header_size - SOX_FIXED_HDR - comment_size); + + st->codec->sample_rate = sample_rate; + st->codec->sample_fmt = SAMPLE_FMT_S32; + st->codec->bits_per_coded_sample = 32; + st->codec->bit_rate = st->codec->sample_rate * + st->codec->bits_per_coded_sample * + st->codec->channels; + + av_set_pts_info(st, 64, 1, st->codec->sample_rate); + + return 0; +} + +#define MAX_SIZE 4096 + +static int sox_read_packet(AVFormatContext *s, + AVPacket *pkt) +{ + int ret; + + if (url_feof(s->pb)) + return AVERROR_EOF; + + ret = av_get_packet(s->pb, pkt, MAX_SIZE); + if (ret < 0) + return AVERROR(EIO); + pkt->stream_index = 0; + pkt->size = ret; + + return 0; +} + +AVInputFormat sox_demuxer = { + "sox", + NULL_IF_CONFIG_SMALL("SoX native format"), + 0, + sox_probe, + sox_read_header, + sox_read_packet, + NULL, + pcm_read_seek, +}; diff --git a/libavformat/soxenc.c b/libavformat/soxenc.c new file mode 100644 index 0000000000..1a04b2b661 --- /dev/null +++ b/libavformat/soxenc.c @@ -0,0 +1,126 @@ +/* + * SoX native format muxer + * 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 + */ + +/** + * SoX native format muxer + * @file libavformat/soxenc.c + * @author Daniel Verkamp + * @sa http://wiki.multimedia.cx/index.php?title=SoX_native_intermediate_format + */ + +#include "libavutil/intreadwrite.h" +#include "avformat.h" +#include "sox.h" + +typedef struct { + int64_t header_size; +} SoXContext; + +static int sox_write_header(AVFormatContext *s) +{ + SoXContext *sox = s->priv_data; + ByteIOContext *pb = s->pb; + AVCodecContext *enc = s->streams[0]->codec; + AVMetadataTag *comment; + size_t comment_len = 0, comment_size; + + comment = av_metadata_get(s->metadata, "comment", NULL, 0); + if (comment) + comment_len = strlen(comment->value); + comment_size = (comment_len + 7) & ~7; + + sox->header_size = SOX_FIXED_HDR + comment_size; + + if (enc->codec_id == CODEC_ID_PCM_S32LE) { + put_tag(pb, ".SoX"); + put_le32(pb, sox->header_size); + put_le64(pb, 0); /* number of samples */ + put_le64(pb, av_dbl2int(enc->sample_rate)); + put_le32(pb, enc->channels); + put_le32(pb, comment_size); + } else if (enc->codec_id == CODEC_ID_PCM_S32BE) { + put_tag(pb, "XoS."); + put_be32(pb, sox->header_size); + put_be64(pb, 0); /* number of samples */ + put_be64(pb, av_dbl2int(enc->sample_rate)); + put_be32(pb, enc->channels); + put_be32(pb, comment_size); + } else { + av_log(s, AV_LOG_ERROR, "invalid codec; use pcm_s32le or pcm_s32be\n"); + return -1; + } + + if (comment_len) + put_buffer(pb, comment->value, comment_len); + + for ( ; comment_size > comment_len; comment_len++) + put_byte(pb, 0); + + put_flush_packet(pb); + + return 0; +} + +static int sox_write_packet(AVFormatContext *s, AVPacket *pkt) +{ + ByteIOContext *pb = s->pb; + put_buffer(pb, pkt->data, pkt->size); + return 0; +} + +static int sox_write_trailer(AVFormatContext *s) +{ + SoXContext *sox = s->priv_data; + ByteIOContext *pb = s->pb; + AVCodecContext *enc = s->streams[0]->codec; + + if (!url_is_streamed(s->pb)) { + /* update number of samples */ + int64_t file_size = url_ftell(pb); + int64_t num_samples = (file_size - sox->header_size - 4LL) >> 2LL; + url_fseek(pb, 8, SEEK_SET); + if (enc->codec_id == CODEC_ID_PCM_S32LE) { + put_le64(pb, num_samples); + } else + put_be64(pb, num_samples); + url_fseek(pb, file_size, SEEK_SET); + + put_flush_packet(pb); + } + + return 0; +} + +AVOutputFormat sox_muxer = { + "sox", + NULL_IF_CONFIG_SMALL("SoX native format"), + NULL, + "sox", + sizeof(SoXContext), + CODEC_ID_PCM_S32LE, + CODEC_ID_NONE, + sox_write_header, + sox_write_packet, + sox_write_trailer, +}; |