FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/r210dec.c
Date: 2021-09-22 23:55:11
Exec Total Coverage
Lines: 38 50 76.0%
Branches: 13 30 43.3%

Line Branch Exec Source
1 /*
2 * R210 decoder
3 *
4 * Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de>
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 #include "avcodec.h"
24 #include "internal.h"
25 #include "libavutil/bswap.h"
26 #include "libavutil/common.h"
27
28 10 static av_cold int decode_init(AVCodecContext *avctx)
29 {
30 10 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
31 10 avctx->bits_per_raw_sample = 10;
32
33 10 return 0;
34 }
35
36 203 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
37 AVPacket *avpkt)
38 {
39 int h, w, ret;
40 203 AVFrame *pic = data;
41 203 const uint32_t *src = (const uint32_t *)avpkt->data;
42
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203 int aligned_width = FFALIGN(avctx->width,
43 avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
44 uint8_t *g_line, *b_line, *r_line;
45 203 int r10 = (avctx->codec_tag & 0xFFFFFF) == MKTAG('r', '1', '0', 0);
46 406 int le = avctx->codec_tag == MKTAG('R', '1', '0', 'k') &&
47
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203 avctx->extradata_size >= 12 && !memcmp(&avctx->extradata[4], "DpxE", 4) &&
48 !avctx->extradata[11];
49
50
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203 if (avpkt->size < 4 * aligned_width * avctx->height) {
51 av_log(avctx, AV_LOG_ERROR, "packet too small\n");
52 return AVERROR_INVALIDDATA;
53 }
54
55
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203 if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
56 return ret;
57
58 203 pic->pict_type = AV_PICTURE_TYPE_I;
59 203 pic->key_frame = 1;
60 203 g_line = pic->data[0];
61 203 b_line = pic->data[1];
62 203 r_line = pic->data[2];
63
64
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46543 for (h = 0; h < avctx->height; h++) {
65 46340 uint16_t *dstg = (uint16_t *)g_line;
66 46340 uint16_t *dstb = (uint16_t *)b_line;
67 46340 uint16_t *dstr = (uint16_t *)r_line;
68
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16232140 for (w = 0; w < avctx->width; w++) {
69 uint32_t pixel;
70 uint16_t r, g, b;
71
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16185800 if (avctx->codec_id == AV_CODEC_ID_AVRP || r10 || le) {
72 pixel = av_le2ne32(*src++);
73 } else {
74 16185800 pixel = av_be2ne32(*src++);
75 }
76
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16185800 if (avctx->codec_id == AV_CODEC_ID_R210) {
77 16185800 b = pixel & 0x3ff;
78 16185800 g = (pixel >> 10) & 0x3ff;
79 16185800 r = (pixel >> 20) & 0x3ff;
80 } else if (r10) {
81 r = pixel & 0x3ff;
82 g = (pixel >> 10) & 0x3ff;
83 b = (pixel >> 20) & 0x3ff;
84 } else {
85 b = (pixel >> 2) & 0x3ff;
86 g = (pixel >> 12) & 0x3ff;
87 r = (pixel >> 22) & 0x3ff;
88 }
89 16185800 *dstr++ = r;
90 16185800 *dstg++ = g;
91 16185800 *dstb++ = b;
92 }
93 46340 src += aligned_width - avctx->width;
94 46340 g_line += pic->linesize[0];
95 46340 b_line += pic->linesize[1];
96 46340 r_line += pic->linesize[2];
97 }
98
99 203 *got_frame = 1;
100
101 203 return avpkt->size;
102 }
103
104 #if CONFIG_R210_DECODER
105 const AVCodec ff_r210_decoder = {
106 .name = "r210",
107 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
108 .type = AVMEDIA_TYPE_VIDEO,
109 .id = AV_CODEC_ID_R210,
110 .init = decode_init,
111 .decode = decode_frame,
112 .capabilities = AV_CODEC_CAP_DR1,
113 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
114 };
115 #endif
116 #if CONFIG_R10K_DECODER
117 const AVCodec ff_r10k_decoder = {
118 .name = "r10k",
119 .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
120 .type = AVMEDIA_TYPE_VIDEO,
121 .id = AV_CODEC_ID_R10K,
122 .init = decode_init,
123 .decode = decode_frame,
124 .capabilities = AV_CODEC_CAP_DR1,
125 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
126 };
127 #endif
128 #if CONFIG_AVRP_DECODER
129 const AVCodec ff_avrp_decoder = {
130 .name = "avrp",
131 .long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
132 .type = AVMEDIA_TYPE_VIDEO,
133 .id = AV_CODEC_ID_AVRP,
134 .init = decode_init,
135 .decode = decode_frame,
136 .capabilities = AV_CODEC_CAP_DR1,
137 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
138 };
139 #endif
140