FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/fraps.c	Lines:	126	155	81.3 %
Date:	2021-01-21 21:11:50	Branches:	72	98	73.5 %


/*
 * Fraps FPS1 decoder
 * Copyright (c) 2005 Roine Gustafsson
 * Copyright (c) 2006 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
 * Lossless Fraps 'FPS1' decoder
 * @author Roine Gustafsson (roine at users sf net)
 * @author Konstantin Shishkov
 *
 * Codec algorithm for version 0 is taken from Transcode <www.transcoding.org>
 *
 * Version 2 files support by Konstantin Shishkov
 */

#include "config.h"

#define CACHED_BITSTREAM_READER HAVE_FAST_64BIT
#define UNCHECKED_BITSTREAM_READER 1
#include "avcodec.h"
#include "get_bits.h"
#include "huffman.h"
#include "bytestream.h"
#include "bswapdsp.h"
#include "internal.h"
#include "thread.h"

#define FPS_TAG MKTAG('F', 'P', 'S', 'x')
#define VLC_BITS 11

/**
 * local variable storage
 */
typedef struct FrapsContext {
    AVCodecContext *avctx;
    BswapDSPContext bdsp;
    uint8_t *tmpbuf;
    int tmpbuf_size;
} FrapsContext;


/**
 * initializes decoder
 * @param avctx codec context
 * @return 0 on success or negative if fails
 */
static av_cold int decode_init(AVCodecContext *avctx)
{
    FrapsContext * const s = avctx->priv_data;

    s->avctx  = avctx;
    s->tmpbuf = NULL;

    ff_bswapdsp_init(&s->bdsp);

    return 0;
}

/**
 * Comparator - our nodes should ascend by count
 * but with preserved symbol order
 */
static int huff_cmp(const void *va, const void *vb)
{
    const Node *a = va, *b = vb;
    return (a->count - b->count)*256 + a->sym - b->sym;
}

/**
 * decode Fraps v2 packed plane
 */
static int fraps2_decode_plane(FrapsContext *s, uint8_t *dst, int stride, int w,
                               int h, const uint8_t *src, int size, int Uoff,
                               const int step)
{
    int i, j, ret;
    GetBitContext gb;
    VLC vlc;
    Node nodes[512];

    for (i = 0; i < 256; i++)
        nodes[i].count = bytestream_get_le32(&src);
    size -= 1024;
    if ((ret = ff_huff_build_tree(s->avctx, &vlc, 256, VLC_BITS,
                                  nodes, huff_cmp,
                                  FF_HUFFMAN_FLAG_ZERO_COUNT)) < 0)
        return ret;
    /* we have built Huffman table and are ready to decode plane */

    /* convert bits so they may be used by standard bitreader */
    s->bdsp.bswap_buf((uint32_t *) s->tmpbuf,
                      (const uint32_t *) src, size >> 2);

    if ((ret = init_get_bits8(&gb, s->tmpbuf, size)) < 0)
        return ret;

    for (j = 0; j < h; j++) {
        for (i = 0; i < w*step; i += step) {
            dst[i] = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
            /* lines are stored as deltas between previous lines
             * and we need to add 0x80 to the first lines of chroma planes
             */
            if (j)
                dst[i] += dst[i - stride];
            else if (Uoff)
                dst[i] += 0x80;
            if (get_bits_left(&gb) < 0) {
                ff_free_vlc(&vlc);
                return AVERROR_INVALIDDATA;
            }
        }
        dst += stride;
    }
    ff_free_vlc(&vlc);
    return 0;
}

static int decode_frame(AVCodecContext *avctx,
                        void *data, int *got_frame,
                        AVPacket *avpkt)
{
    FrapsContext * const s = avctx->priv_data;
    const uint8_t *buf     = avpkt->data;
    int buf_size           = avpkt->size;
    ThreadFrame frame = { .f = data };
    AVFrame * const f = data;
    uint32_t header;
    unsigned int version,header_size;
    unsigned int x, y;
    const uint32_t *buf32;
    uint32_t *luma1,*luma2,*cb,*cr;
    uint32_t offs[4];
    int i, j, ret, is_chroma;
    const int planes = 3;
    int is_pal;
    uint8_t *out;

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

    header      = AV_RL32(buf);
    version     = header & 0xff;
    is_pal      = buf[1] == 2 && version == 1;
    header_size = (header & (1<<30))? 8 : 4; /* bit 30 means pad to 8 bytes */

    if (version > 5) {
        avpriv_report_missing_feature(avctx, "Fraps version %u", version);
        return AVERROR_PATCHWELCOME;
    }

    buf += header_size;

    if (is_pal) {
        unsigned needed_size = avctx->width * avctx->height + 1024;
        needed_size += header_size;
        if (buf_size != needed_size) {
            av_log(avctx, AV_LOG_ERROR,
                   "Invalid frame length %d (should be %d)\n",
                   buf_size, needed_size);
            return AVERROR_INVALIDDATA;
        }
    } else if (version < 2) {
        unsigned needed_size = avctx->width * avctx->height * 3;
        if (version == 0) needed_size /= 2;
        needed_size += header_size;
        /* bit 31 means same as previous pic */
        if (header & (1U<<31)) {
            *got_frame = 0;
            return buf_size;
        }
        if (buf_size != needed_size) {
            av_log(avctx, AV_LOG_ERROR,
                   "Invalid frame length %d (should be %d)\n",
                   buf_size, needed_size);
            return AVERROR_INVALIDDATA;
        }
    } else {
        /* skip frame */
        if (buf_size == 8) {
            *got_frame = 0;
            return buf_size;
        }
        if (AV_RL32(buf) != FPS_TAG || buf_size < planes*1024 + 24) {
            av_log(avctx, AV_LOG_ERROR, "error in data stream\n");
            return AVERROR_INVALIDDATA;
        }
        for (i = 0; i < planes; i++) {
            offs[i] = AV_RL32(buf + 4 + i * 4);
            if (offs[i] >= buf_size - header_size || (i && offs[i] <= offs[i - 1] + 1024)) {
                av_log(avctx, AV_LOG_ERROR, "plane %i offset is out of bounds\n", i);
                return AVERROR_INVALIDDATA;
            }
        }
        offs[planes] = buf_size - header_size;
        for (i = 0; i < planes; i++) {
            av_fast_padded_malloc(&s->tmpbuf, &s->tmpbuf_size, offs[i + 1] - offs[i] - 1024);
            if (!s->tmpbuf)
                return AVERROR(ENOMEM);
        }
    }

    f->pict_type = AV_PICTURE_TYPE_I;
    f->key_frame = 1;

    avctx->pix_fmt = version & 1 ? is_pal ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_BGR24 : AV_PIX_FMT_YUVJ420P;
    avctx->color_range = version & 1 ? AVCOL_RANGE_UNSPECIFIED
                                     : AVCOL_RANGE_JPEG;
    avctx->colorspace = version & 1 ? AVCOL_SPC_UNSPECIFIED : AVCOL_SPC_BT709;

    if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
        return ret;

    switch (version) {
    case 0:
    default:
        /* Fraps v0 is a reordered YUV420 */
        if (((avctx->width % 8) != 0) || ((avctx->height % 2) != 0)) {
            av_log(avctx, AV_LOG_ERROR, "Invalid frame size %dx%d\n",
                   avctx->width, avctx->height);
            return AVERROR_INVALIDDATA;
        }

        buf32 = (const uint32_t*)buf;
        for (y = 0; y < avctx->height / 2; y++) {
            luma1 = (uint32_t*)&f->data[0][  y * 2      * f->linesize[0] ];
            luma2 = (uint32_t*)&f->data[0][ (y * 2 + 1) * f->linesize[0] ];
            cr    = (uint32_t*)&f->data[1][  y          * f->linesize[1] ];
            cb    = (uint32_t*)&f->data[2][  y          * f->linesize[2] ];
            for (x = 0; x < avctx->width; x += 8) {
                *luma1++ = *buf32++;
                *luma1++ = *buf32++;
                *luma2++ = *buf32++;
                *luma2++ = *buf32++;
                *cr++    = *buf32++;
                *cb++    = *buf32++;
            }
        }
        break;

    case 1:
        if (is_pal) {
            uint32_t *pal = (uint32_t *)f->data[1];

            for (y = 0; y < 256; y++) {
                pal[y] = AV_RL32(buf) | 0xFF000000;
                buf += 4;
            }

            for (y = 0; y <avctx->height; y++)
                memcpy(&f->data[0][y * f->linesize[0]],
                       &buf[y * avctx->width],
                       avctx->width);
        } else {
        /* Fraps v1 is an upside-down BGR24 */
            for (y = 0; y<avctx->height; y++)
                memcpy(&f->data[0][(avctx->height - y - 1) * f->linesize[0]],
                       &buf[y * avctx->width * 3],
                       3 * avctx->width);
        }
        break;

    case 2:
    case 4:
        /**
         * Fraps v2 is Huffman-coded YUV420 planes
         * Fraps v4 is virtually the same
         */
        for (i = 0; i < planes; i++) {
            is_chroma = !!i;
            if ((ret = fraps2_decode_plane(s, f->data[i], f->linesize[i],
                                           avctx->width  >> is_chroma,
                                           avctx->height >> is_chroma,
                                           buf + offs[i], offs[i + 1] - offs[i],
                                           is_chroma, 1)) < 0) {
                av_log(avctx, AV_LOG_ERROR, "Error decoding plane %i\n", i);
                return ret;
            }
        }
        break;
    case 3:
    case 5:
        /* Virtually the same as version 4, but is for RGB24 */
        for (i = 0; i < planes; i++) {
            if ((ret = fraps2_decode_plane(s, f->data[0] + i + (f->linesize[0] * (avctx->height - 1)),
                                           -f->linesize[0], avctx->width, avctx->height,
                                           buf + offs[i], offs[i + 1] - offs[i], 0, 3)) < 0) {
                av_log(avctx, AV_LOG_ERROR, "Error decoding plane %i\n", i);
                return ret;
            }
        }
        out = f->data[0];
        // convert pseudo-YUV into real RGB
        for (j = 0; j < avctx->height; j++) {
            uint8_t *line_end = out + 3*avctx->width;
            while (out < line_end) {
                out[0]  += out[1];
                out[2]  += out[1];
                out += 3;
            }
            out += f->linesize[0] - 3*avctx->width;
        }
        break;
    }

    *got_frame = 1;

    return buf_size;
}


/**
 * closes decoder
 * @param avctx codec context
 * @return 0 on success or negative if fails
 */
static av_cold int decode_end(AVCodecContext *avctx)
{
    FrapsContext *s = (FrapsContext*)avctx->priv_data;

    av_freep(&s->tmpbuf);
    return 0;
}


AVCodec ff_fraps_decoder = {
    .name           = "fraps",
    .long_name      = NULL_IF_CONFIG_SMALL("Fraps"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_FRAPS,
    .priv_data_size = sizeof(FrapsContext),
    .init           = decode_init,
    .close          = decode_end,
    .decode         = decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Fraps FPS1 decoder
3			* Copyright (c) 2005 Roine Gustafsson
4			* Copyright (c) 2006 Konstantin Shishkov
5			*
6			* This file is part of FFmpeg.
7			*
8			* FFmpeg is free software; you can redistribute it and/or
9			* modify it under the terms of the GNU Lesser General Public
10			* License as published by the Free Software Foundation; either
11			* version 2.1 of the License, or (at your option) any later version.
12			*
13			* FFmpeg is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16			* Lesser General Public License for more details.
17			*
18			* You should have received a copy of the GNU Lesser General Public
19			* License along with FFmpeg; if not, write to the Free Software
20			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21			*/
22
23			/**
24			* @file
25			* Lossless Fraps 'FPS1' decoder
26			* @author Roine Gustafsson (roine at users sf net)
27			* @author Konstantin Shishkov
28			*
29			* Codec algorithm for version 0 is taken from Transcode <www.transcoding.org>
30			*
31			* Version 2 files support by Konstantin Shishkov
32			*/
33
34			#include "config.h"
35
36			#define CACHED_BITSTREAM_READER HAVE_FAST_64BIT
37			#define UNCHECKED_BITSTREAM_READER 1
38			#include "avcodec.h"
39			#include "get_bits.h"
40			#include "huffman.h"
41			#include "bytestream.h"
42			#include "bswapdsp.h"
43			#include "internal.h"
44			#include "thread.h"
45
46			#define FPS_TAG MKTAG('F', 'P', 'S', 'x')
47			#define VLC_BITS 11
48
49			/**
50			* local variable storage
51			*/
52			typedef struct FrapsContext {
53			AVCodecContext *avctx;
54			BswapDSPContext bdsp;
55			uint8_t *tmpbuf;
56			int tmpbuf_size;
57			} FrapsContext;
58
59
60			/**
61			* initializes decoder
62			* @param avctx codec context
63			* @return 0 on success or negative if fails
64			*/
65		14	static av_cold int decode_init(AVCodecContext *avctx)
66			{
67		14	FrapsContext * const s = avctx->priv_data;
68
69		14	s->avctx = avctx;
70		14	s->tmpbuf = NULL;
71
72		14	ff_bswapdsp_init(&s->bdsp);
73
74		14	return 0;
75			}
76
77			/**
78			* Comparator - our nodes should ascend by count
79			* but with preserved symbol order
80			*/
81		924225	static int huff_cmp(const void va, const void vb)
82			{
83		924225	const Node a = va, b = vb;
84		924225	return (a->count - b->count)*256 + a->sym - b->sym;
85			}
86
87			/**
88			* decode Fraps v2 packed plane
89			*/
90		417	static int fraps2_decode_plane(FrapsContext s, uint8_t dst, int stride, int w,
91			int h, const uint8_t *src, int size, int Uoff,
92			const int step)
93			{
94			int i, j, ret;
95			GetBitContext gb;
96			VLC vlc;
97			Node nodes[512];
98
99	✓✓	107169	for (i = 0; i < 256; i++)
100		106752	nodes[i].count = bytestream_get_le32(&src);
101		417	size -= 1024;
102	✗✓	417	if ((ret = ff_huff_build_tree(s->avctx, &vlc, 256, VLC_BITS,
103			nodes, huff_cmp,
104			FF_HUFFMAN_FLAG_ZERO_COUNT)) < 0)
105			return ret;
106			/* we have built Huffman table and are ready to decode plane */
107
108			/* convert bits so they may be used by standard bitreader */
109		417	s->bdsp.bswap_buf((uint32_t *) s->tmpbuf,
110			(const uint32_t *) src, size >> 2);
111
112	✗✓	417	if ((ret = init_get_bits8(&gb, s->tmpbuf, size)) < 0)
113			return ret;
114
115	✓✓	82607	for (j = 0; j < h; j++) {
116	✓✓	29602124	for (i = 0; i < w*step; i += step) {
117		29519934	dst[i] = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
118			/* lines are stored as deltas between previous lines
119			* and we need to add 0x80 to the first lines of chroma planes
120			*/
121	✓✓	29519934	if (j)
122		29387582	dst[i] += dst[i - stride];
123	✓✓	132352	else if (Uoff)
124		8192	dst[i] += 0x80;
125	✓✓	29519934	if (get_bits_left(&gb) < 0) {
126		2	ff_free_vlc(&vlc);
127		2	return AVERROR_INVALIDDATA;
128			}
129			}
130		82190	dst += stride;
131			}
132		415	ff_free_vlc(&vlc);
133		415	return 0;
134			}
135
136		176	static int decode_frame(AVCodecContext *avctx,
137			void data, int got_frame,
138			AVPacket *avpkt)
139			{
140		176	FrapsContext * const s = avctx->priv_data;
141		176	const uint8_t *buf = avpkt->data;
142		176	int buf_size = avpkt->size;
143		176	ThreadFrame frame = { .f = data };
144		176	AVFrame * const f = data;
145			uint32_t header;
146			unsigned int version,header_size;
147			unsigned int x, y;
148			const uint32_t *buf32;
149			uint32_t luma1,luma2,cb,cr;
150			uint32_t offs[4];
151			int i, j, ret, is_chroma;
152		176	const int planes = 3;
153			int is_pal;
154			uint8_t *out;
155
156	✗✓	176	if (buf_size < 4) {
157			av_log(avctx, AV_LOG_ERROR, "Packet is too short\n");
158			return AVERROR_INVALIDDATA;
159			}
160
161		176	header = AV_RL32(buf);
162		176	version = header & 0xff;
163	✗✓✗✗	176	is_pal = buf[1] == 2 && version == 1;
164	✓✗	176	header_size = (header & (1<<30))? 8 : 4; /* bit 30 means pad to 8 bytes */
165
166	✗✓	176	if (version > 5) {
167			avpriv_report_missing_feature(avctx, "Fraps version %u", version);
168			return AVERROR_PATCHWELCOME;
169			}
170
171		176	buf += header_size;
172
173	✗✓	176	if (is_pal) {
174			unsigned needed_size = avctx->width * avctx->height + 1024;
175			needed_size += header_size;
176			if (buf_size != needed_size) {
177			av_log(avctx, AV_LOG_ERROR,
178			"Invalid frame length %d (should be %d)\n",
179			buf_size, needed_size);
180			return AVERROR_INVALIDDATA;
181			}
182	✓✓	176	} else if (version < 2) {
183		24	unsigned needed_size = avctx->width * avctx->height * 3;
184	✓✓	24	if (version == 0) needed_size /= 2;
185		24	needed_size += header_size;
186			/* bit 31 means same as previous pic */
187	✗✓	24	if (header & (1U<<31)) {
188			*got_frame = 0;
189			return buf_size;
190			}
191	✓✓	24	if (buf_size != needed_size) {
192		1	av_log(avctx, AV_LOG_ERROR,
193			"Invalid frame length %d (should be %d)\n",
194			buf_size, needed_size);
195		1	return AVERROR_INVALIDDATA;
196			}
197			} else {
198			/* skip frame */
199	✓✓	152	if (buf_size == 8) {
200		10	*got_frame = 0;
201		10	return buf_size;
202			}
203	✓✗✗✓	142	if (AV_RL32(buf) != FPS_TAG \|\| buf_size < planes*1024 + 24) {
204			av_log(avctx, AV_LOG_ERROR, "error in data stream\n");
205			return AVERROR_INVALIDDATA;
206			}
207	✓✓	563	for (i = 0; i < planes; i++) {
208		424	offs[i] = AV_RL32(buf + 4 + i * 4);
209	✓✓✓✓ ✗✓	424	if (offs[i] >= buf_size - header_size \|\| (i && offs[i] <= offs[i - 1] + 1024)) {
210		3	av_log(avctx, AV_LOG_ERROR, "plane %i offset is out of bounds\n", i);
211		3	return AVERROR_INVALIDDATA;
212			}
213			}
214		139	offs[planes] = buf_size - header_size;
215	✓✓	556	for (i = 0; i < planes; i++) {
216		417	av_fast_padded_malloc(&s->tmpbuf, &s->tmpbuf_size, offs[i + 1] - offs[i] - 1024);
217	✗✓	417	if (!s->tmpbuf)
218			return AVERROR(ENOMEM);
219			}
220			}
221
222		162	f->pict_type = AV_PICTURE_TYPE_I;
223		162	f->key_frame = 1;
224
225	✓✓✗✓	162	avctx->pix_fmt = version & 1 ? is_pal ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_BGR24 : AV_PIX_FMT_YUVJ420P;
226		324	avctx->color_range = version & 1 ? AVCOL_RANGE_UNSPECIFIED
227	✓✓	162	: AVCOL_RANGE_JPEG;
228	✓✓	162	avctx->colorspace = version & 1 ? AVCOL_SPC_UNSPECIFIED : AVCOL_SPC_BT709;
229
230	✗✓	162	if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
231			return ret;
232
233	✓✓✓✓	162	switch (version) {
234		21	case 0:
235			default:
236			/* Fraps v0 is a reordered YUV420 */
237	✓✗✗✓	21	if (((avctx->width % 8) != 0) \|\| ((avctx->height % 2) != 0)) {
238			av_log(avctx, AV_LOG_ERROR, "Invalid frame size %dx%d\n",
239			avctx->width, avctx->height);
240			return AVERROR_INVALIDDATA;
241			}
242
243		21	buf32 = (const uint32_t*)buf;
244	✓✓	2289	for (y = 0; y < avctx->height / 2; y++) {
245		2268	luma1 = (uint32_t)&f->data[0][ y 2 * f->linesize[0] ];
246		2268	luma2 = (uint32_t)&f->data[0][ (y 2 + 1) * f->linesize[0] ];
247		2268	cr = (uint32_t)&f->data[1][ y f->linesize[1] ];
248		2268	cb = (uint32_t)&f->data[2][ y f->linesize[2] ];
249	✓✓	90720	for (x = 0; x < avctx->width; x += 8) {
250		88452	luma1++ = buf32++;
251		88452	luma1++ = buf32++;
252		88452	luma2++ = buf32++;
253		88452	luma2++ = buf32++;
254		88452	cr++ = buf32++;
255		88452	cb++ = buf32++;
256			}
257			}
258		21	break;
259
260		2	case 1:
261	✗✓	2	if (is_pal) {
262			uint32_t pal = (uint32_t )f->data[1];
263
264			for (y = 0; y < 256; y++) {
265			pal[y] = AV_RL32(buf) \| 0xFF000000;
266			buf += 4;
267			}
268
269			for (y = 0; y <avctx->height; y++)
270			memcpy(&f->data[0][y * f->linesize[0]],
271			&buf[y * avctx->width],
272			avctx->width);
273			} else {
274			/* Fraps v1 is an upside-down BGR24 */
275	✓✓	482	for (y = 0; y<avctx->height; y++)
276		480	memcpy(&f->data[0][(avctx->height - y - 1) * f->linesize[0]],
277		480	&buf[y * avctx->width * 3],
278		480	3 * avctx->width);
279			}
280		2	break;
281
282		11	case 2:
283			case 4:
284			/**
285			* Fraps v2 is Huffman-coded YUV420 planes
286			* Fraps v4 is virtually the same
287			*/
288	✓✓	44	for (i = 0; i < planes; i++) {
289		33	is_chroma = !!i;
290	✗✓	33	if ((ret = fraps2_decode_plane(s, f->data[i], f->linesize[i],
291		33	avctx->width >> is_chroma,
292		33	avctx->height >> is_chroma,
293		33	buf + offs[i], offs[i + 1] - offs[i],
294			is_chroma, 1)) < 0) {
295			av_log(avctx, AV_LOG_ERROR, "Error decoding plane %i\n", i);
296			return ret;
297			}
298			}
299		11	break;
300		128	case 3:
301			case 5:
302			/* Virtually the same as version 4, but is for RGB24 */
303	✓✓	510	for (i = 0; i < planes; i++) {
304	✓✓	384	if ((ret = fraps2_decode_plane(s, f->data[0] + i + (f->linesize[0] * (avctx->height - 1)),
305		384	-f->linesize[0], avctx->width, avctx->height,
306		384	buf + offs[i], offs[i + 1] - offs[i], 0, 3)) < 0) {
307		2	av_log(avctx, AV_LOG_ERROR, "Error decoding plane %i\n", i);
308		2	return ret;
309			}
310			}
311		126	out = f->data[0];
312			// convert pseudo-YUV into real RGB
313	✓✓	23022	for (j = 0; j < avctx->height; j++) {
314		22896	uint8_t line_end = out + 3avctx->width;
315	✓✓	7305072	while (out < line_end) {
316		7282176	out[0] += out[1];
317		7282176	out[2] += out[1];
318		7282176	out += 3;
319			}
320		22896	out += f->linesize[0] - 3*avctx->width;
321			}
322		126	break;
323			}
324
325		160	*got_frame = 1;
326
327		160	return buf_size;
328			}
329
330
331			/**
332			* closes decoder
333			* @param avctx codec context
334			* @return 0 on success or negative if fails
335			*/
336		14	static av_cold int decode_end(AVCodecContext *avctx)
337			{
338		14	FrapsContext s = (FrapsContext)avctx->priv_data;
339
340		14	av_freep(&s->tmpbuf);
341		14	return 0;
342			}
343
344
345			AVCodec ff_fraps_decoder = {
346			.name = "fraps",
347			.long_name = NULL_IF_CONFIG_SMALL("Fraps"),
348			.type = AVMEDIA_TYPE_VIDEO,
349			.id = AV_CODEC_ID_FRAPS,
350			.priv_data_size = sizeof(FrapsContext),
351			.init = decode_init,
352			.close = decode_end,
353			.decode = decode_frame,
354			.capabilities = AV_CODEC_CAP_DR1 \| AV_CODEC_CAP_FRAME_THREADS,
355			.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
356			};