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https://gitee.com/openharmony/third_party_ffmpeg
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avformat: add FSB demuxer
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
401c93ddb7
commit
8b1bc2b075
@ -20,7 +20,7 @@ version <next>:
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- selectivecolor filter
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- extensive native AAC encoder improvements
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- ADPCM PSX decoder
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- 3dostr, dcstr, genh, vag, xvag, ads, msf, svag & vpk demuxer
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- 3dostr, dcstr, fsb, genh, vag, xvag, ads, msf, svag & vpk demuxer
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- zscale filter
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- wve demuxer
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- zero-copy Intel QSV transcoding in ffmpeg
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@ -170,6 +170,7 @@ OBJS-$(CONFIG_FOURXM_DEMUXER) += 4xm.o
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OBJS-$(CONFIG_FRAMECRC_MUXER) += framecrcenc.o framehash.o
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OBJS-$(CONFIG_FRAMEMD5_MUXER) += md5enc.o framehash.o
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OBJS-$(CONFIG_FRM_DEMUXER) += frmdec.o
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OBJS-$(CONFIG_FSB_DEMUXER) += fsb.o
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OBJS-$(CONFIG_GIF_MUXER) += gif.o
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OBJS-$(CONFIG_GIF_DEMUXER) += gifdec.o
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OBJS-$(CONFIG_GSM_DEMUXER) += gsmdec.o
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@ -138,6 +138,7 @@ void av_register_all(void)
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REGISTER_MUXER (FRAMECRC, framecrc);
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REGISTER_MUXER (FRAMEMD5, framemd5);
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REGISTER_DEMUXER (FRM, frm);
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REGISTER_DEMUXER (FSB, fsb);
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REGISTER_MUXDEMUX(G722, g722);
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REGISTER_MUXDEMUX(G723_1, g723_1);
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REGISTER_DEMUXER (G729, g729);
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210
libavformat/fsb.c
Normal file
210
libavformat/fsb.c
Normal file
@ -0,0 +1,210 @@
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/*
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* FSB demuxer
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* Copyright (c) 2015 Paul B Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/avassert.h"
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#include "libavutil/intreadwrite.h"
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#include "avformat.h"
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#include "avio.h"
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#include "internal.h"
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static int fsb_probe(AVProbeData *p)
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{
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if (memcmp(p->buf, "FSB", 3) || p->buf[3] - '0' < 1 || p->buf[3] - '0' > 5)
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return 0;
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if (AV_RL32(p->buf + 4) != 1)
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return 0;
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return AVPROBE_SCORE_MAX;
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}
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static int fsb_read_header(AVFormatContext *s)
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{
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AVIOContext *pb = s->pb;
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unsigned format, version, c;
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int64_t offset;
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AVCodecContext *codec;
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AVStream *st = avformat_new_stream(s, NULL);
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avio_skip(pb, 3); // "FSB"
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version = avio_r8(pb) - '0';
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if (version != 4 && version != 3) {
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avpriv_request_sample(s, "version %d", version);
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return AVERROR_PATCHWELCOME;
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}
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avio_skip(pb, 4);
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if (!st)
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return AVERROR(ENOMEM);
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codec = st->codec;
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codec->codec_type = AVMEDIA_TYPE_AUDIO;
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codec->codec_tag = 0;
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if (version == 3) {
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offset = avio_rl32(pb) + 0x18;
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avio_skip(pb, 44);
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st->duration = avio_rl32(pb);
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avio_skip(pb, 12);
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format = avio_rl32(pb);
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codec->sample_rate = avio_rl32(pb);
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if (codec->sample_rate <= 0)
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return AVERROR_INVALIDDATA;
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avio_skip(pb, 6);
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codec->channels = avio_rl16(pb);
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if (!codec->channels)
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return AVERROR_INVALIDDATA;
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if (format & 0x00000100) {
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codec->codec_id = AV_CODEC_ID_PCM_S16LE;
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codec->block_align = 4096 * codec->channels;
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} else if (format & 0x00400000) {
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codec->bits_per_coded_sample = 4;
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codec->codec_id = AV_CODEC_ID_ADPCM_IMA_WAV;
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codec->block_align = 36 * codec->channels;
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} else if (format & 0x00800000) {
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codec->codec_id = AV_CODEC_ID_ADPCM_PSX;
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codec->block_align = 16 * codec->channels;
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} else if (format & 0x02000000) {
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codec->codec_id = AV_CODEC_ID_ADPCM_THP;
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codec->block_align = 8 * codec->channels;
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if (codec->channels > INT_MAX / 32)
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return AVERROR_INVALIDDATA;
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ff_alloc_extradata(codec, 32 * codec->channels);
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if (!codec->extradata)
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return AVERROR(ENOMEM);
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avio_seek(pb, 0x68, SEEK_SET);
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for (c = 0; c < codec->channels; c++) {
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avio_read(pb, codec->extradata + 32 * c, 32);
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avio_skip(pb, 14);
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}
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} else {
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avpriv_request_sample(s, "format 0x%X", format);
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return AVERROR_PATCHWELCOME;
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}
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} else if (version == 4) {
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offset = avio_rl32(pb) + 0x30;
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avio_skip(pb, 80);
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st->duration = avio_rl32(pb);
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format = avio_rb32(pb);
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switch(format) {
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case 0x40001001:
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case 0x00001005:
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case 0x40001081:
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case 0x40200001:
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codec->codec_id = AV_CODEC_ID_XMA2;
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break;
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case 0x40000802:
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codec->codec_id = AV_CODEC_ID_ADPCM_THP;
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break;
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default:
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avpriv_request_sample(s, "format 0x%X", format);
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return AVERROR_PATCHWELCOME;
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}
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codec->sample_rate = avio_rl32(pb);
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if (codec->sample_rate <= 0)
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return AVERROR_INVALIDDATA;
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avio_skip(pb, 6);
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codec->channels = avio_rl16(pb);
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if (!codec->channels)
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return AVERROR_INVALIDDATA;
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switch (codec->codec_id) {
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case AV_CODEC_ID_XMA2:
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ff_alloc_extradata(codec, 34);
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if (!codec->extradata)
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return AVERROR(ENOMEM);
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memset(codec->extradata, 0, 34);
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codec->block_align = 2048;
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break;
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case AV_CODEC_ID_ADPCM_THP:
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if (codec->channels > INT_MAX / 32)
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return AVERROR_INVALIDDATA;
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ff_alloc_extradata(codec, 32 * codec->channels);
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if (!codec->extradata)
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return AVERROR(ENOMEM);
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avio_seek(pb, 0x80, SEEK_SET);
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for (c = 0; c < codec->channels; c++) {
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avio_read(pb, codec->extradata + 32 * c, 32);
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avio_skip(pb, 14);
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}
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codec->block_align = 8 * codec->channels;
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break;
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}
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} else {
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av_assert0(0);
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}
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avio_skip(pb, offset - avio_tell(pb));
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s->internal->data_offset = avio_tell(pb);
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avpriv_set_pts_info(st, 64, 1, codec->sample_rate);
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return 0;
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}
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static int fsb_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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AVCodecContext *codec = s->streams[0]->codec;
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int64_t pos;
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int ret;
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if (avio_feof(s->pb))
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return AVERROR_EOF;
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pos = avio_tell(s->pb);
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if (codec->codec_id == AV_CODEC_ID_ADPCM_THP &&
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codec->channels > 1) {
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int i, ch;
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ret = av_new_packet(pkt, codec->block_align);
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if (ret < 0)
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return ret;
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for (i = 0; i < 4; i++) {
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for (ch = 0; ch < codec->channels; ch++) {
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pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
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pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
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}
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}
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ret = 0;
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} else {
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ret = av_get_packet(s->pb, pkt, codec->block_align);
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}
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if (codec->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
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pkt->duration = (pkt->data[0] >> 2) * 512;
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pkt->pos = pos;
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pkt->stream_index = 0;
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return ret;
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}
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AVInputFormat ff_fsb_demuxer = {
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.name = "fsb",
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.long_name = NULL_IF_CONFIG_SMALL("FMOD Sample Bank"),
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.read_probe = fsb_probe,
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.read_header = fsb_read_header,
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.read_packet = fsb_read_packet,
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.extensions = "fsb",
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.flags = AVFMT_GENERIC_INDEX,
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};
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@ -30,7 +30,7 @@
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#include "libavutil/version.h"
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#define LIBAVFORMAT_VERSION_MAJOR 57
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#define LIBAVFORMAT_VERSION_MINOR 17
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#define LIBAVFORMAT_VERSION_MINOR 18
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#define LIBAVFORMAT_VERSION_MICRO 100
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#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
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