9023de342f
* commit '1470ce21cec5ee26e106e2a884c26bbf84e5aaea': Bump libavcodec and libavformat minor versions for G.723.1 decoder and demuxer G.723.1 demuxer and decoder Add a shift parameter to celp_lp_synthesis_filter() libopenjpeg: K&R formatting cosmetics yadif: use emms_c() instead of inline assembly for emms invocations. ac3: don't use different names for option tables in the template file. lavfi: use const for AVFilterPad declarations in all filters. adpcm: don't duplicate identical AVSampleFmt array for each encoder. configure: cosmetics: Group test dependencies together configure: add more passthrough flags in tms470 filter configure: move flag filtering functions out of if/else blocks Conflicts: Changelog configure doc/general.texi libavcodec/Makefile libavcodec/ac3enc_fixed.c libavcodec/allcodecs.c libavcodec/eac3enc.c libavcodec/g723_1.c libavcodec/g723_1_data.h libavcodec/libopenjpegdec.c libavcodec/libopenjpegenc.c libavcodec/v210dec.h libavcodec/version.h libavfilter/af_anull.c libavfilter/asrc_anullsrc.c libavfilter/f_settb.c libavfilter/fifo.c libavfilter/split.c libavfilter/src_movie.c libavfilter/vf_aspect.c libavfilter/vf_blackframe.c libavfilter/vf_boxblur.c libavfilter/vf_copy.c libavfilter/vf_crop.c libavfilter/vf_cropdetect.c libavfilter/vf_delogo.c libavfilter/vf_drawbox.c libavfilter/vf_drawtext.c libavfilter/vf_fade.c libavfilter/vf_fieldorder.c libavfilter/vf_format.c libavfilter/vf_frei0r.c libavfilter/vf_gradfun.c libavfilter/vf_hflip.c libavfilter/vf_hqdn3d.c libavfilter/vf_libopencv.c libavfilter/vf_lut.c libavfilter/vf_null.c libavfilter/vf_overlay.c libavfilter/vf_pad.c libavfilter/vf_pixdesctest.c libavfilter/vf_scale.c libavfilter/vf_select.c libavfilter/vf_setpts.c libavfilter/vf_showinfo.c libavfilter/vf_slicify.c libavfilter/vf_transpose.c libavfilter/vf_unsharp.c libavfilter/vf_vflip.c libavfilter/vf_yadif.c libavfilter/vsrc_color.c libavfilter/vsrc_testsrc.c libavformat/Makefile libavformat/allformats.c libavformat/g723_1.c libavformat/version.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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* G.723.1 demuxer
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* Copyright (c) 2010 Mohamed Naufal Basheer
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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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/**
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* @file
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* G.723.1 demuxer
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*/
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#include "libavutil/audioconvert.h"
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#include "avformat.h"
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#include "internal.h"
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static const uint8_t frame_size[4] = { 24, 20, 4, 1 };
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static int g723_1_init(AVFormatContext *s)
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{
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AVStream *st;
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st = avformat_new_stream(s, NULL);
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if (!st)
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return AVERROR(ENOMEM);
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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st->codec->codec_id = CODEC_ID_G723_1;
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st->codec->channel_layout = AV_CH_LAYOUT_MONO;
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st->codec->channels = 1;
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st->codec->sample_rate = 8000;
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avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
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st->start_time = 0;
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return 0;
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}
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static int g723_1_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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int size, byte, ret;
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pkt->pos = avio_tell(s->pb);
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byte = avio_r8(s->pb);
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size = frame_size[byte & 3];
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ret = av_new_packet(pkt, size);
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if (ret < 0)
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return ret;
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pkt->data[0] = byte;
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pkt->duration = 240;
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pkt->stream_index = 0;
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ret = avio_read(s->pb, pkt->data + 1, size - 1);
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if (ret < size - 1) {
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av_free_packet(pkt);
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return ret < 0 ? ret : AVERROR_EOF;
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}
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return pkt->size;
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}
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AVInputFormat ff_g723_1_demuxer = {
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.name = "g723_1",
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.long_name = NULL_IF_CONFIG_SMALL("G.723.1 format"),
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.read_header = g723_1_init,
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.read_packet = g723_1_read_packet,
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.extensions = "tco,rco,g723_1",
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.flags = AVFMT_GENERIC_INDEX
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};
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