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https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
move DTS demuxer to its own file
Originally committed as revision 24972 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs
parent
85a2aada90
commit
6d0678d182
@ -57,7 +57,7 @@ OBJS-$(CONFIG_DIRAC_MUXER) += raw.o
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OBJS-$(CONFIG_DNXHD_DEMUXER) += raw.o
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OBJS-$(CONFIG_DNXHD_MUXER) += raw.o
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OBJS-$(CONFIG_DSICIN_DEMUXER) += dsicin.o
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OBJS-$(CONFIG_DTS_DEMUXER) += raw.o
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OBJS-$(CONFIG_DTS_DEMUXER) += dtsdec.o raw.o
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OBJS-$(CONFIG_DTS_MUXER) += raw.o
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OBJS-$(CONFIG_DV_DEMUXER) += dv.o
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OBJS-$(CONFIG_DV_MUXER) += dvenc.o
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78
libavformat/dtsdec.c
Normal file
78
libavformat/dtsdec.c
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@ -0,0 +1,78 @@
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/*
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* RAW DTS demuxer
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* Copyright (c) 2008 Benjamin Larsson
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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 "libavcodec/bytestream.h"
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#include "avformat.h"
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#include "raw.h"
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#define DCA_MARKER_14B_BE 0x1FFFE800
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#define DCA_MARKER_14B_LE 0xFF1F00E8
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#define DCA_MARKER_RAW_BE 0x7FFE8001
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#define DCA_MARKER_RAW_LE 0xFE7F0180
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static int dts_probe(AVProbeData *p)
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{
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const uint8_t *buf, *bufp;
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uint32_t state = -1;
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int markers[3] = {0};
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int sum, max;
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buf = p->buf;
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for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
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bufp = buf;
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state = (state << 16) | bytestream_get_be16(&bufp);
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/* regular bitstream */
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if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE)
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markers[0]++;
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/* 14 bits big-endian bitstream */
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if (state == DCA_MARKER_14B_BE)
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if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)
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markers[1]++;
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/* 14 bits little-endian bitstream */
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if (state == DCA_MARKER_14B_LE)
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if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)
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markers[2]++;
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}
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sum = markers[0] + markers[1] + markers[2];
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max = markers[1] > markers[0];
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max = markers[2] > markers[max] ? 2 : max;
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if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 &&
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markers[max] * 4 > sum * 3)
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return AVPROBE_SCORE_MAX/2+1;
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return 0;
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}
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AVInputFormat dts_demuxer = {
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"dts",
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NULL_IF_CONFIG_SMALL("raw DTS"),
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0,
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dts_probe,
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ff_raw_audio_read_header,
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ff_raw_read_partial_packet,
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.flags= AVFMT_GENERIC_INDEX,
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.extensions = "dts",
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.value = CODEC_ID_DTS,
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};
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@ -233,7 +233,7 @@ int pcm_read_seek(AVFormatContext *s,
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return 0;
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}
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static int audio_read_header(AVFormatContext *s,
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int ff_raw_audio_read_header(AVFormatContext *s,
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AVFormatParameters *ap)
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{
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AVStream *st = av_new_stream(s, 0);
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@ -519,49 +519,6 @@ static int h261_probe(AVProbeData *p)
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}
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#endif
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#if CONFIG_DTS_DEMUXER
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#define DCA_MARKER_14B_BE 0x1FFFE800
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#define DCA_MARKER_14B_LE 0xFF1F00E8
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#define DCA_MARKER_RAW_BE 0x7FFE8001
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#define DCA_MARKER_RAW_LE 0xFE7F0180
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static int dts_probe(AVProbeData *p)
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{
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const uint8_t *buf, *bufp;
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uint32_t state = -1;
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int markers[3] = {0};
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int sum, max;
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buf = p->buf;
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for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
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bufp = buf;
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state = (state << 16) | bytestream_get_be16(&bufp);
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/* regular bitstream */
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if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE)
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markers[0]++;
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/* 14 bits big-endian bitstream */
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if (state == DCA_MARKER_14B_BE)
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if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)
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markers[1]++;
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/* 14 bits little-endian bitstream */
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if (state == DCA_MARKER_14B_LE)
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if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)
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markers[2]++;
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}
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sum = markers[0] + markers[1] + markers[2];
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max = markers[1] > markers[0];
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max = markers[2] > markers[max] ? 2 : max;
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if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 &&
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markers[max] * 4 > sum * 3)
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return AVPROBE_SCORE_MAX/2+1;
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return 0;
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}
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#endif
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#if CONFIG_DIRAC_DEMUXER
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static int dirac_probe(AVProbeData *p)
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{
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@ -656,7 +613,7 @@ AVInputFormat ac3_demuxer = {
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NULL_IF_CONFIG_SMALL("raw AC-3"),
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0,
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ac3_probe,
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audio_read_header,
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ff_raw_audio_read_header,
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ff_raw_read_partial_packet,
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.flags= AVFMT_GENERIC_INDEX,
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.extensions = "ac3",
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@ -735,20 +692,6 @@ AVOutputFormat dnxhd_muxer = {
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};
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#endif
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#if CONFIG_DTS_DEMUXER
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AVInputFormat dts_demuxer = {
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"dts",
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NULL_IF_CONFIG_SMALL("raw DTS"),
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0,
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dts_probe,
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audio_read_header,
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ff_raw_read_partial_packet,
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.flags= AVFMT_GENERIC_INDEX,
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.extensions = "dts",
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.value = CODEC_ID_DTS,
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};
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#endif
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#if CONFIG_DTS_MUXER
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AVOutputFormat dts_muxer = {
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"dts",
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@ -770,7 +713,7 @@ AVInputFormat eac3_demuxer = {
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NULL_IF_CONFIG_SMALL("raw E-AC-3"),
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0,
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eac3_probe,
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audio_read_header,
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ff_raw_audio_read_header,
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ff_raw_read_partial_packet,
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.flags= AVFMT_GENERIC_INDEX,
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.extensions = "eac3",
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@ -799,7 +742,7 @@ AVInputFormat gsm_demuxer = {
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NULL_IF_CONFIG_SMALL("raw GSM"),
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0,
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NULL,
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audio_read_header,
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ff_raw_audio_read_header,
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ff_raw_read_partial_packet,
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.flags= AVFMT_GENERIC_INDEX,
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.extensions = "gsm",
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@ -987,7 +930,7 @@ AVInputFormat mlp_demuxer = {
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NULL_IF_CONFIG_SMALL("raw MLP"),
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0,
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NULL,
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audio_read_header,
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ff_raw_audio_read_header,
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ff_raw_read_partial_packet,
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.flags= AVFMT_GENERIC_INDEX,
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.extensions = "mlp",
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@ -1028,7 +971,7 @@ AVInputFormat truehd_demuxer = {
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NULL_IF_CONFIG_SMALL("raw TrueHD"),
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0,
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NULL,
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audio_read_header,
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ff_raw_audio_read_header,
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ff_raw_read_partial_packet,
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.flags= AVFMT_GENERIC_INDEX,
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.extensions = "thd",
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@ -1157,7 +1100,7 @@ AVInputFormat shorten_demuxer = {
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NULL_IF_CONFIG_SMALL("raw Shorten"),
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0,
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NULL,
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audio_read_header,
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ff_raw_audio_read_header,
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ff_raw_read_partial_packet,
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.flags= AVFMT_GENERIC_INDEX,
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.extensions = "shn",
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@ -31,4 +31,6 @@ int ff_raw_write_packet(AVFormatContext *s, AVPacket *pkt);
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int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt);
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int ff_raw_audio_read_header(AVFormatContext *s, AVFormatParameters *ap);
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#endif /* AVFORMAT_RAW_H */
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