GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/g729_parser.c Lines: 0 28 0.0 %
Date: 2019-11-18 18:00:01 Branches: 0 16 0.0 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2015  Ganesh Ajjanagadde
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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.729 audio parser
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 *
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 * Splits packets into individual blocks.
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 */
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#include "libavutil/avassert.h"
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#include "parser.h"
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#include "g729.h"
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typedef struct G729ParseContext {
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    ParseContext pc;
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    int block_size;
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    int duration;
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    int remaining;
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} G729ParseContext;
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static int g729_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
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                     const uint8_t **poutbuf, int *poutbuf_size,
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                     const uint8_t *buf, int buf_size)
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{
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    G729ParseContext *s = s1->priv_data;
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    ParseContext *pc = &s->pc;
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    int next;
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    if (!s->block_size) {
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        /* FIXME: replace this heuristic block_size with more precise estimate */
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        s->block_size = (avctx->bit_rate < 8000) ? G729D_6K4_BLOCK_SIZE : G729_8K_BLOCK_SIZE;
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        if (avctx->codec_id == AV_CODEC_ID_ACELP_KELVIN)
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            s->block_size++;
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        s->block_size *= avctx->channels;
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        s->duration   = avctx->frame_size;
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    }
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    if (!s->block_size) {
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        *poutbuf      = buf;
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        *poutbuf_size = buf_size;
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        return buf_size;
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    }
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    if (!s->remaining)
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        s->remaining = s->block_size;
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    if (s->remaining <= buf_size) {
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        next = s->remaining;
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        s->remaining = 0;
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    } else {
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        next = END_NOT_FOUND;
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        s->remaining -= buf_size;
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    }
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    if (ff_combine_frame(pc, next, &buf, &buf_size) < 0 || !buf_size) {
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        *poutbuf      = NULL;
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        *poutbuf_size = 0;
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        return buf_size;
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    }
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    s1->duration = s->duration;
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    *poutbuf      = buf;
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    *poutbuf_size = buf_size;
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    return next;
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}
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AVCodecParser ff_g729_parser = {
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    .codec_ids      = { AV_CODEC_ID_G729, AV_CODEC_ID_ACELP_KELVIN },
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    .priv_data_size = sizeof(G729ParseContext),
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    .parser_parse   = g729_parse,
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    .parser_close   = ff_parse_close,
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};