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avcodec: add g732_1 parser

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This commit is contained in:
Paul B Mahol 2018-12-18 20:46:13 +01:00
parent d360a79c0a
commit 3601eb0474
4 changed files with 62 additions and 2 deletions
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1
libavcodec/Makefile
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@ -1025,6 +1025,7 @@ OBJS-$(CONFIG_DVD_NAV_PARSER) += dvd_nav_parser.o
OBJS-$(CONFIG_DVDSUB_PARSER) += dvdsub_parser.o
OBJS-$(CONFIG_FLAC_PARSER) += flac_parser.o flacdata.o flac.o \
vorbis_data.o
OBJS-$(CONFIG_G723_1_PARSER) += g723_1_parser.o
OBJS-$(CONFIG_G729_PARSER) += g729_parser.o
OBJS-$(CONFIG_GIF_PARSER) += gif_parser.o
OBJS-$(CONFIG_GSM_PARSER) += gsm_parser.o

60
libavcodec/g723_1_parser.c Normal file
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@ -0,0 +1,60 @@
/*
* 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
* G723_1 audio parser
*/
#include "parser.h"
#include "g723_1.h"
typedef struct G723_1ParseContext {
ParseContext pc;
} G723_1ParseContext;
static int g723_1_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size)
{
G723_1ParseContext *s = s1->priv_data;
ParseContext *pc = &s->pc;
int next = END_NOT_FOUND;
if (buf_size > 0)
next = frame_size[buf[0] & 3] * FFMAX(1, avctx->channels);
if (ff_combine_frame(pc, next, &buf, &buf_size) < 0 || !buf_size) {
*poutbuf = NULL;
*poutbuf_size = 0;
return buf_size;
}
s1->duration = 240;
*poutbuf = buf;
*poutbuf_size = buf_size;
return next;
}
AVCodecParser ff_g723_1_parser = {
.codec_ids = { AV_CODEC_ID_G723_1 },
.priv_data_size = sizeof(G723_1ParseContext),
.parser_parse = g723_1_parse,
.parser_close = ff_parse_close,
};

1
libavcodec/parsers.c
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@ -40,6 +40,7 @@ extern AVCodecParser ff_dvbsub_parser;
extern AVCodecParser ff_dvdsub_parser;
extern AVCodecParser ff_dvd_nav_parser;
extern AVCodecParser ff_flac_parser;
extern AVCodecParser ff_g723_1_parser;
extern AVCodecParser ff_g729_parser;
extern AVCodecParser ff_gif_parser;
extern AVCodecParser ff_gsm_parser;

2
libavcodec/utils.c
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@ -1599,8 +1599,6 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
return 256 * (frame_bytes / 64);
if (id == AV_CODEC_ID_RA_144)
return 160 * (frame_bytes / 20);
if (id == AV_CODEC_ID_G723_1)
return 240 * (frame_bytes / 24);
if (bps > 0) {
/* calc from frame_bytes and bits_per_coded_sample */