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GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/aasc.c	Lines:	35	74	47.3 %
Date:	2020-01-28 04:56:05	Branches:	8	26	30.8 %


/*
 * Autodesk RLE Decoder
 * Copyright (C) 2005 The FFmpeg project
 *
 * 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
 * Autodesk RLE Video Decoder by Konstantin Shishkov
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "avcodec.h"
#include "internal.h"
#include "msrledec.h"

typedef struct AascContext {
    AVCodecContext *avctx;
    GetByteContext gb;
    AVFrame *frame;

    uint32_t palette[AVPALETTE_COUNT];
    int palette_size;
} AascContext;

static av_cold int aasc_decode_init(AVCodecContext *avctx)
{
    AascContext *s = avctx->priv_data;
    uint8_t *ptr;
    int i;

    s->avctx = avctx;
    switch (avctx->bits_per_coded_sample) {
    case 8:
        avctx->pix_fmt = AV_PIX_FMT_PAL8;

        ptr = avctx->extradata;
        s->palette_size = FFMIN(avctx->extradata_size, AVPALETTE_SIZE);
        for (i = 0; i < s->palette_size / 4; i++) {
            s->palette[i] = 0xFFU << 24 | AV_RL32(ptr);
            ptr += 4;
        }
        break;
    case 16:
        avctx->pix_fmt = AV_PIX_FMT_RGB555LE;
        break;
    case 24:
        avctx->pix_fmt = AV_PIX_FMT_BGR24;
        break;
    default:
        av_log(avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n", avctx->bits_per_coded_sample);
        return -1;
    }

    s->frame = av_frame_alloc();
    if (!s->frame)
        return AVERROR(ENOMEM);

    return 0;
}

static int aasc_decode_frame(AVCodecContext *avctx,
                              void *data, int *got_frame,
                              AVPacket *avpkt)
{
    const uint8_t *buf = avpkt->data;
    int buf_size       = avpkt->size;
    AascContext *s     = avctx->priv_data;
    int compr, i, stride, psize, ret;

    if (buf_size < 4) {
        av_log(avctx, AV_LOG_ERROR, "frame too short\n");
        return AVERROR_INVALIDDATA;
    }

    if ((ret = ff_reget_buffer(avctx, s->frame, 0)) < 0)
        return ret;

    compr     = AV_RL32(buf);
    buf      += 4;
    buf_size -= 4;
    psize = avctx->bits_per_coded_sample / 8;
    switch (avctx->codec_tag) {
    case MKTAG('A', 'A', 'S', '4'):
        bytestream2_init(&s->gb, buf - 4, buf_size + 4);
        ff_msrle_decode(avctx, s->frame, 8, &s->gb);
        break;
    case MKTAG('A', 'A', 'S', 'C'):
    switch (compr) {
    case 0:
        stride = (avctx->width * psize + psize) & ~psize;
        if (buf_size < stride * avctx->height)
            return AVERROR_INVALIDDATA;
        for (i = avctx->height - 1; i >= 0; i--) {
            memcpy(s->frame->data[0] + i * s->frame->linesize[0], buf, avctx->width * psize);
            buf += stride;
            buf_size -= stride;
        }
        break;
    case 1:
        bytestream2_init(&s->gb, buf, buf_size);
        ff_msrle_decode(avctx, s->frame, 8, &s->gb);
        break;
    default:
        av_log(avctx, AV_LOG_ERROR, "Unknown compression type %d\n", compr);
        return AVERROR_INVALIDDATA;
    }
        break;
    default:
        av_log(avctx, AV_LOG_ERROR, "Unknown FourCC: %X\n", avctx->codec_tag);
        return -1;
    }

    if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
        memcpy(s->frame->data[1], s->palette, s->palette_size);

    *got_frame = 1;
    if ((ret = av_frame_ref(data, s->frame)) < 0)
        return ret;

    /* report that the buffer was completely consumed */
    return avpkt->size;
}

static av_cold int aasc_decode_end(AVCodecContext *avctx)
{
    AascContext *s = avctx->priv_data;

    av_frame_free(&s->frame);

    return 0;
}

AVCodec ff_aasc_decoder = {
    .name           = "aasc",
    .long_name      = NULL_IF_CONFIG_SMALL("Autodesk RLE"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_AASC,
    .priv_data_size = sizeof(AascContext),
    .init           = aasc_decode_init,
    .close          = aasc_decode_end,
    .decode         = aasc_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
};


Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
1			/*
2			* Autodesk RLE Decoder
3			* Copyright (C) 2005 The FFmpeg project
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			* Autodesk RLE Video Decoder by Konstantin Shishkov
25			*/
26
27			#include <stdio.h>
28			#include <stdlib.h>
29			#include <string.h>
30
31			#include "avcodec.h"
32			#include "internal.h"
33			#include "msrledec.h"
34
35			typedef struct AascContext {
36			AVCodecContext *avctx;
37			GetByteContext gb;
38			AVFrame *frame;
39
40			uint32_t palette[AVPALETTE_COUNT];
41			int palette_size;
42			} AascContext;
43
44		2	static av_cold int aasc_decode_init(AVCodecContext *avctx)
45			{
46		2	AascContext *s = avctx->priv_data;
47			uint8_t *ptr;
48			int i;
49
50		2	s->avctx = avctx;
51	✗✗✓✗	2	switch (avctx->bits_per_coded_sample) {
52			case 8:
53			avctx->pix_fmt = AV_PIX_FMT_PAL8;
54
55			ptr = avctx->extradata;
56			s->palette_size = FFMIN(avctx->extradata_size, AVPALETTE_SIZE);
57			for (i = 0; i < s->palette_size / 4; i++) {
58			s->palette[i] = 0xFFU << 24 \| AV_RL32(ptr);
59			ptr += 4;
60			}
61			break;
62			case 16:
63			avctx->pix_fmt = AV_PIX_FMT_RGB555LE;
64			break;
65		2	case 24:
66		2	avctx->pix_fmt = AV_PIX_FMT_BGR24;
67		2	break;
68			default:
69			av_log(avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n", avctx->bits_per_coded_sample);
70			return -1;
71			}
72
73		2	s->frame = av_frame_alloc();
74	✗✓	2	if (!s->frame)
75			return AVERROR(ENOMEM);
76
77		2	return 0;
78			}
79
80		24	static int aasc_decode_frame(AVCodecContext *avctx,
81			void data, int got_frame,
82			AVPacket *avpkt)
83			{
84		24	const uint8_t *buf = avpkt->data;
85		24	int buf_size = avpkt->size;
86		24	AascContext *s = avctx->priv_data;
87			int compr, i, stride, psize, ret;
88
89	✗✓	24	if (buf_size < 4) {
90			av_log(avctx, AV_LOG_ERROR, "frame too short\n");
91			return AVERROR_INVALIDDATA;
92			}
93
94	✗✓	24	if ((ret = ff_reget_buffer(avctx, s->frame, 0)) < 0)
95			return ret;
96
97		24	compr = AV_RL32(buf);
98		24	buf += 4;
99		24	buf_size -= 4;
100		24	psize = avctx->bits_per_coded_sample / 8;
101	✗✓✗	24	switch (avctx->codec_tag) {
102			case MKTAG('A', 'A', 'S', '4'):
103			bytestream2_init(&s->gb, buf - 4, buf_size + 4);
104			ff_msrle_decode(avctx, s->frame, 8, &s->gb);
105			break;
106	✗✓✗	24	case MKTAG('A', 'A', 'S', 'C'):
107			switch (compr) {
108			case 0:
109			stride = (avctx->width * psize + psize) & ~psize;
110			if (buf_size < stride * avctx->height)
111			return AVERROR_INVALIDDATA;
112			for (i = avctx->height - 1; i >= 0; i--) {
113			memcpy(s->frame->data[0] + i * s->frame->linesize[0], buf, avctx->width * psize);
114			buf += stride;
115			buf_size -= stride;
116			}
117			break;
118		24	case 1:
119		24	bytestream2_init(&s->gb, buf, buf_size);
120		24	ff_msrle_decode(avctx, s->frame, 8, &s->gb);
121		24	break;
122			default:
123			av_log(avctx, AV_LOG_ERROR, "Unknown compression type %d\n", compr);
124			return AVERROR_INVALIDDATA;
125			}
126		24	break;
127			default:
128			av_log(avctx, AV_LOG_ERROR, "Unknown FourCC: %X\n", avctx->codec_tag);
129			return -1;
130			}
131
132	✗✓	24	if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
133			memcpy(s->frame->data[1], s->palette, s->palette_size);
134
135		24	*got_frame = 1;
136	✗✓	24	if ((ret = av_frame_ref(data, s->frame)) < 0)
137			return ret;
138
139			/* report that the buffer was completely consumed */
140		24	return avpkt->size;
141			}
142
143		2	static av_cold int aasc_decode_end(AVCodecContext *avctx)
144			{
145		2	AascContext *s = avctx->priv_data;
146
147		2	av_frame_free(&s->frame);
148
149		2	return 0;
150			}
151
152			AVCodec ff_aasc_decoder = {
153			.name = "aasc",
154			.long_name = NULL_IF_CONFIG_SMALL("Autodesk RLE"),
155			.type = AVMEDIA_TYPE_VIDEO,
156			.id = AV_CODEC_ID_AASC,
157			.priv_data_size = sizeof(AascContext),
158			.init = aasc_decode_init,
159			.close = aasc_decode_end,
160			.decode = aasc_decode_frame,
161			.capabilities = AV_CODEC_CAP_DR1,
162			.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
163			};