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GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/gsmdec.c	Lines:	38	51	74.5 %
Date:	2020-01-29 01:05:39	Branches:	14	26	53.8 %


/*
 * gsm 06.10 decoder
 * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 *
 * 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
 * GSM decoder
 */

#include "libavutil/channel_layout.h"
#include "avcodec.h"
#include "get_bits.h"
#include "internal.h"
#include "msgsmdec.h"

#include "gsmdec_template.c"

static av_cold int gsm_init(AVCodecContext *avctx)
{
    avctx->channels       = 1;
    avctx->channel_layout = AV_CH_LAYOUT_MONO;
    if (!avctx->sample_rate)
        avctx->sample_rate = 8000;
    avctx->sample_fmt     = AV_SAMPLE_FMT_S16;

    switch (avctx->codec_id) {
    case AV_CODEC_ID_GSM:
        avctx->frame_size  = GSM_FRAME_SIZE;
        avctx->block_align = GSM_BLOCK_SIZE;
        break;
    case AV_CODEC_ID_GSM_MS:
        avctx->frame_size  = 2 * GSM_FRAME_SIZE;
        if (!avctx->block_align)
            avctx->block_align = GSM_MS_BLOCK_SIZE;
        else
            if (avctx->block_align < MSN_MIN_BLOCK_SIZE ||
                avctx->block_align > GSM_MS_BLOCK_SIZE  ||
                (avctx->block_align - MSN_MIN_BLOCK_SIZE) % 3) {
                av_log(avctx, AV_LOG_ERROR, "Invalid block alignment %d\n",
                       avctx->block_align);
                return AVERROR_INVALIDDATA;
            }
    }

    return 0;
}

static int gsm_decode_frame(AVCodecContext *avctx, void *data,
                            int *got_frame_ptr, AVPacket *avpkt)
{
    AVFrame *frame = data;
    int res;
    GetBitContext gb;
    const uint8_t *buf = avpkt->data;
    int buf_size = avpkt->size;
    int16_t *samples;

    if (buf_size < avctx->block_align) {
        av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
        return AVERROR_INVALIDDATA;
    }

    /* get output buffer */
    frame->nb_samples = avctx->frame_size;
    if ((res = ff_get_buffer(avctx, frame, 0)) < 0)
        return res;
    samples = (int16_t *)frame->data[0];

    switch (avctx->codec_id) {
    case AV_CODEC_ID_GSM:
        init_get_bits(&gb, buf, buf_size * 8);
        if (get_bits(&gb, 4) != 0xd)
            av_log(avctx, AV_LOG_WARNING, "Missing GSM magic!\n");
        res = gsm_decode_block(avctx, samples, &gb, GSM_13000);
        if (res < 0)
            return res;
        break;
    case AV_CODEC_ID_GSM_MS:
        res = ff_msgsm_decode_block(avctx, samples, buf,
                                    (GSM_MS_BLOCK_SIZE - avctx->block_align) / 3);
        if (res < 0)
            return res;
    }

    *got_frame_ptr = 1;

    return avctx->block_align;
}

static void gsm_flush(AVCodecContext *avctx)
{
    GSMContext *s = avctx->priv_data;
    memset(s, 0, sizeof(*s));
}

#if CONFIG_GSM_DECODER
AVCodec ff_gsm_decoder = {
    .name           = "gsm",
    .long_name      = NULL_IF_CONFIG_SMALL("GSM"),
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_GSM,
    .priv_data_size = sizeof(GSMContext),
    .init           = gsm_init,
    .decode         = gsm_decode_frame,
    .flush          = gsm_flush,
    .capabilities   = AV_CODEC_CAP_DR1,
};
#endif
#if CONFIG_GSM_MS_DECODER
AVCodec ff_gsm_ms_decoder = {
    .name           = "gsm_ms",
    .long_name      = NULL_IF_CONFIG_SMALL("GSM Microsoft variant"),
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_GSM_MS,
    .priv_data_size = sizeof(GSMContext),
    .init           = gsm_init,
    .decode         = gsm_decode_frame,
    .flush          = gsm_flush,
    .capabilities   = AV_CODEC_CAP_DR1,
};
#endif


Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
1			/*
2			* gsm 06.10 decoder
3			* Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			/**
23			* @file
24			* GSM decoder
25			*/
26
27			#include "libavutil/channel_layout.h"
28			#include "avcodec.h"
29			#include "get_bits.h"
30			#include "internal.h"
31			#include "msgsmdec.h"
32
33			#include "gsmdec_template.c"
34
35		4	static av_cold int gsm_init(AVCodecContext *avctx)
36			{
37		4	avctx->channels = 1;
38		4	avctx->channel_layout = AV_CH_LAYOUT_MONO;
39	✗✓	4	if (!avctx->sample_rate)
40			avctx->sample_rate = 8000;
41		4	avctx->sample_fmt = AV_SAMPLE_FMT_S16;
42
43	✓✓✗	4	switch (avctx->codec_id) {
44		2	case AV_CODEC_ID_GSM:
45		2	avctx->frame_size = GSM_FRAME_SIZE;
46		2	avctx->block_align = GSM_BLOCK_SIZE;
47		2	break;
48		2	case AV_CODEC_ID_GSM_MS:
49		2	avctx->frame_size = 2 * GSM_FRAME_SIZE;
50	✗✓	2	if (!avctx->block_align)
51			avctx->block_align = GSM_MS_BLOCK_SIZE;
52			else
53	✓✗	2	if (avctx->block_align < MSN_MIN_BLOCK_SIZE \|\|
54	✓✗	2	avctx->block_align > GSM_MS_BLOCK_SIZE \|\|
55	✗✓	2	(avctx->block_align - MSN_MIN_BLOCK_SIZE) % 3) {
56			av_log(avctx, AV_LOG_ERROR, "Invalid block alignment %d\n",
57			avctx->block_align);
58			return AVERROR_INVALIDDATA;
59			}
60			}
61
62		4	return 0;
63			}
64
65		591	static int gsm_decode_frame(AVCodecContext avctx, void data,
66			int got_frame_ptr, AVPacket avpkt)
67			{
68		591	AVFrame *frame = data;
69			int res;
70			GetBitContext gb;
71		591	const uint8_t *buf = avpkt->data;
72		591	int buf_size = avpkt->size;
73			int16_t *samples;
74
75	✗✓	591	if (buf_size < avctx->block_align) {
76			av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
77			return AVERROR_INVALIDDATA;
78			}
79
80			/* get output buffer */
81		591	frame->nb_samples = avctx->frame_size;
82	✗✓	591	if ((res = ff_get_buffer(avctx, frame, 0)) < 0)
83			return res;
84		591	samples = (int16_t *)frame->data[0];
85
86	✓✓✗	591	switch (avctx->codec_id) {
87		502	case AV_CODEC_ID_GSM:
88		502	init_get_bits(&gb, buf, buf_size * 8);
89	✗✓	502	if (get_bits(&gb, 4) != 0xd)
90			av_log(avctx, AV_LOG_WARNING, "Missing GSM magic!\n");
91		502	res = gsm_decode_block(avctx, samples, &gb, GSM_13000);
92	✗✓	502	if (res < 0)
93			return res;
94		502	break;
95		89	case AV_CODEC_ID_GSM_MS:
96		89	res = ff_msgsm_decode_block(avctx, samples, buf,
97		89	(GSM_MS_BLOCK_SIZE - avctx->block_align) / 3);
98	✗✓	89	if (res < 0)
99			return res;
100			}
101
102		591	*got_frame_ptr = 1;
103
104		591	return avctx->block_align;
105			}
106
107			static void gsm_flush(AVCodecContext *avctx)
108			{
109			GSMContext *s = avctx->priv_data;
110			memset(s, 0, sizeof(*s));
111			}
112
113			#if CONFIG_GSM_DECODER
114			AVCodec ff_gsm_decoder = {
115			.name = "gsm",
116			.long_name = NULL_IF_CONFIG_SMALL("GSM"),
117			.type = AVMEDIA_TYPE_AUDIO,
118			.id = AV_CODEC_ID_GSM,
119			.priv_data_size = sizeof(GSMContext),
120			.init = gsm_init,
121			.decode = gsm_decode_frame,
122			.flush = gsm_flush,
123			.capabilities = AV_CODEC_CAP_DR1,
124			};
125			#endif
126			#if CONFIG_GSM_MS_DECODER
127			AVCodec ff_gsm_ms_decoder = {
128			.name = "gsm_ms",
129			.long_name = NULL_IF_CONFIG_SMALL("GSM Microsoft variant"),
130			.type = AVMEDIA_TYPE_AUDIO,
131			.id = AV_CODEC_ID_GSM_MS,
132			.priv_data_size = sizeof(GSMContext),
133			.init = gsm_init,
134			.decode = gsm_decode_frame,
135			.flush = gsm_flush,
136			.capabilities = AV_CODEC_CAP_DR1,
137			};
138			#endif