FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/xl.c	Lines:	52	57	91.2 %
Date:	2021-01-20 23:14:43	Branches:	13	16	81.2 %


/*
 * Miro VideoXL codec
 * Copyright (c) 2004 Konstantin Shishkov
 *
 * 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
 * Miro VideoXL codec.
 */

#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "internal.h"

static const int xl_table[32] = {
   0,   1,   2,   3,   4,   5,   6,   7,
   8,   9,  12,  15,  20,  25,  34,  46,
  64,  82,  94, 103, 108, 113, 116, 119,
 120, 121, 122, 123, 124, 125, 126, 127
};

static int decode_frame(AVCodecContext *avctx,
                        void *data, int *got_frame,
                        AVPacket *avpkt)
{
    const uint8_t *buf = avpkt->data;
    int buf_size       = avpkt->size;
    AVFrame *const p   = data;
    uint8_t *Y, *U, *V;
    int i, j, ret;
    int stride;
    uint32_t val;
    int y0, y1, y2, y3 = 0, c0 = 0, c1 = 0;

    if (avctx->width % 4) {
        av_log(avctx, AV_LOG_ERROR, "width is not a multiple of 4\n");
        return AVERROR_INVALIDDATA;
    }
    if (buf_size < avctx->width * avctx->height) {
        av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
        return AVERROR_INVALIDDATA;
    }

    if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
        return ret;
    p->pict_type = AV_PICTURE_TYPE_I;
    p->key_frame = 1;

    Y = p->data[0];
    U = p->data[1];
    V = p->data[2];

    stride = avctx->width - 4;

    for (i = 0; i < avctx->height; i++) {
        /* lines are stored in reversed order */
        buf += stride;

        for (j = 0; j < avctx->width; j += 4) {
            /* value is stored in LE dword with word swapped */
            val  = AV_RL32(buf);
            buf -= 4;
            val  = ((val >> 16) & 0xFFFF) | ((val & 0xFFFF) << 16);

            if (!j)
                y0 = (val & 0x1F) << 2;
            else
                y0 = y3 + xl_table[val & 0x1F];
            val >>= 5;
            y1    = y0 + xl_table[val & 0x1F];
            val >>= 5;
            y2    = y1 + xl_table[val & 0x1F];
            val >>= 6; /* align to word */
            y3    = y2 + xl_table[val & 0x1F];
            val >>= 5;
            if (!j)
                c0 = (val & 0x1F) << 2;
            else
                c0 += xl_table[val & 0x1F];
            val >>= 5;
            if (!j)
                c1 = (val & 0x1F) << 2;
            else
                c1 += xl_table[val & 0x1F];

            Y[j + 0] = y0 << 1;
            Y[j + 1] = y1 << 1;
            Y[j + 2] = y2 << 1;
            Y[j + 3] = y3 << 1;

            U[j >> 2] = c0 << 1;
            V[j >> 2] = c1 << 1;
        }

        buf += avctx->width + 4;
        Y   += p->linesize[0];
        U   += p->linesize[1];
        V   += p->linesize[2];
    }

    *got_frame = 1;

    return buf_size;
}

static av_cold int decode_init(AVCodecContext *avctx)
{
    avctx->pix_fmt = AV_PIX_FMT_YUV411P;

    return 0;
}

AVCodec ff_xl_decoder = {
    .name         = "xl",
    .long_name    = NULL_IF_CONFIG_SMALL("Miro VideoXL"),
    .type         = AVMEDIA_TYPE_VIDEO,
    .id           = AV_CODEC_ID_VIXL,
    .init         = decode_init,
    .decode       = decode_frame,
    .capabilities = AV_CODEC_CAP_DR1,
    .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Miro VideoXL codec
3			* Copyright (c) 2004 Konstantin Shishkov
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			* Miro VideoXL codec.
25			*/
26
27			#include "libavutil/common.h"
28			#include "libavutil/intreadwrite.h"
29			#include "avcodec.h"
30			#include "internal.h"
31
32			static const int xl_table[32] = {
33			0, 1, 2, 3, 4, 5, 6, 7,
34			8, 9, 12, 15, 20, 25, 34, 46,
35			64, 82, 94, 103, 108, 113, 116, 119,
36			120, 121, 122, 123, 124, 125, 126, 127
37			};
38
39		40	static int decode_frame(AVCodecContext *avctx,
40			void data, int got_frame,
41			AVPacket *avpkt)
42			{
43		40	const uint8_t *buf = avpkt->data;
44		40	int buf_size = avpkt->size;
45		40	AVFrame *const p = data;
46			uint8_t Y, U, *V;
47			int i, j, ret;
48			int stride;
49			uint32_t val;
50		40	int y0, y1, y2, y3 = 0, c0 = 0, c1 = 0;
51
52	✗✓	40	if (avctx->width % 4) {
53			av_log(avctx, AV_LOG_ERROR, "width is not a multiple of 4\n");
54			return AVERROR_INVALIDDATA;
55			}
56	✗✓	40	if (buf_size < avctx->width * avctx->height) {
57			av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
58			return AVERROR_INVALIDDATA;
59			}
60
61	✗✓	40	if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
62			return ret;
63		40	p->pict_type = AV_PICTURE_TYPE_I;
64		40	p->key_frame = 1;
65
66		40	Y = p->data[0];
67		40	U = p->data[1];
68		40	V = p->data[2];
69
70		40	stride = avctx->width - 4;
71
72	✓✓	5160	for (i = 0; i < avctx->height; i++) {
73			/* lines are stored in reversed order */
74		5120	buf += stride;
75
76	✓✓	245760	for (j = 0; j < avctx->width; j += 4) {
77			/* value is stored in LE dword with word swapped */
78		240640	val = AV_RL32(buf);
79		240640	buf -= 4;
80		240640	val = ((val >> 16) & 0xFFFF) \| ((val & 0xFFFF) << 16);
81
82	✓✓	240640	if (!j)
83		5120	y0 = (val & 0x1F) << 2;
84			else
85		235520	y0 = y3 + xl_table[val & 0x1F];
86		240640	val >>= 5;
87		240640	y1 = y0 + xl_table[val & 0x1F];
88		240640	val >>= 5;
89		240640	y2 = y1 + xl_table[val & 0x1F];
90		240640	val >>= 6; /* align to word */
91		240640	y3 = y2 + xl_table[val & 0x1F];
92		240640	val >>= 5;
93	✓✓	240640	if (!j)
94		5120	c0 = (val & 0x1F) << 2;
95			else
96		235520	c0 += xl_table[val & 0x1F];
97		240640	val >>= 5;
98	✓✓	240640	if (!j)
99		5120	c1 = (val & 0x1F) << 2;
100			else
101		235520	c1 += xl_table[val & 0x1F];
102
103		240640	Y[j + 0] = y0 << 1;
104		240640	Y[j + 1] = y1 << 1;
105		240640	Y[j + 2] = y2 << 1;
106		240640	Y[j + 3] = y3 << 1;
107
108		240640	U[j >> 2] = c0 << 1;
109		240640	V[j >> 2] = c1 << 1;
110			}
111
112		5120	buf += avctx->width + 4;
113		5120	Y += p->linesize[0];
114		5120	U += p->linesize[1];
115		5120	V += p->linesize[2];
116			}
117
118		40	*got_frame = 1;
119
120		40	return buf_size;
121			}
122
123		2	static av_cold int decode_init(AVCodecContext *avctx)
124			{
125		2	avctx->pix_fmt = AV_PIX_FMT_YUV411P;
126
127		2	return 0;
128			}
129
130			AVCodec ff_xl_decoder = {
131			.name = "xl",
132			.long_name = NULL_IF_CONFIG_SMALL("Miro VideoXL"),
133			.type = AVMEDIA_TYPE_VIDEO,
134			.id = AV_CODEC_ID_VIXL,
135			.init = decode_init,
136			.decode = decode_frame,
137			.capabilities = AV_CODEC_CAP_DR1,
138			.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
139			};