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r210dec.c
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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 
29 {
30  avctx->pix_fmt = AV_PIX_FMT_GBRP10;
31  avctx->bits_per_raw_sample = 10;
32 
33  return 0;
34 }
35 
36 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
37  AVPacket *avpkt)
38 {
39  int h, w, ret;
40  AVFrame *pic = data;
41  const uint32_t *src = (const uint32_t *)avpkt->data;
42  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  int r10 = (avctx->codec_tag & 0xFFFFFF) == MKTAG('r', '1', '0', 0);
46  int le = avctx->codec_tag == MKTAG('R', '1', '0', 'k') &&
47  avctx->extradata_size >= 12 && !memcmp(&avctx->extradata[4], "DpxE", 4) &&
48  !avctx->extradata[11];
49 
50  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  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
56  return ret;
57 
59  pic->key_frame = 1;
60  g_line = pic->data[0];
61  b_line = pic->data[1];
62  r_line = pic->data[2];
63 
64  for (h = 0; h < avctx->height; h++) {
65  uint16_t *dstg = (uint16_t *)g_line;
66  uint16_t *dstb = (uint16_t *)b_line;
67  uint16_t *dstr = (uint16_t *)r_line;
68  for (w = 0; w < avctx->width; w++) {
69  uint32_t pixel;
70  uint16_t r, g, b;
71  if (avctx->codec_id == AV_CODEC_ID_AVRP || r10 || le) {
72  pixel = av_le2ne32(*src++);
73  } else {
74  pixel = av_be2ne32(*src++);
75  }
76  if (avctx->codec_id == AV_CODEC_ID_R210) {
77  b = pixel & 0x3ff;
78  g = (pixel >> 10) & 0x3ff;
79  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  *dstr++ = r;
90  *dstg++ = g;
91  *dstb++ = b;
92  }
93  src += aligned_width - avctx->width;
94  g_line += pic->linesize[0];
95  b_line += pic->linesize[1];
96  r_line += pic->linesize[2];
97  }
98 
99  *got_frame = 1;
100 
101  return avpkt->size;
102 }
103 
104 #if CONFIG_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
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
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
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
This structure describes decoded (raw) audio or video data.
Definition: frame.h:226
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
const char * g
Definition: vf_curves.c:115
int size
Definition: avcodec.h:1453
const char * b
Definition: vf_curves.c:116
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:400
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1750
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2767
#define av_le2ne32(x)
Definition: bswap.h:96
#define src
Definition: vp8dsp.c:254
#define av_be2ne32(x)
Definition: bswap.h:93
AVCodec.
Definition: avcodec.h:3441
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
uint8_t
#define av_cold
Definition: attributes.h:82
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1641
uint8_t * data
Definition: avcodec.h:1452
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
AVCodec ff_r210_decoder
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
const char * r
Definition: vf_curves.c:114
const char * name
Name of the codec implementation.
Definition: avcodec.h:3448
AVCodec ff_r10k_decoder
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:309
int width
picture width / height.
Definition: avcodec.h:1713
uint8_t w
Definition: llviddspenc.c:38
Libavcodec external API header.
enum AVCodecID codec_id
Definition: avcodec.h:1550
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:257
main external API structure.
Definition: avcodec.h:1540
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1565
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1919
int extradata_size
Definition: avcodec.h:1642
byte swapping routines
AVCodec ff_avrp_decoder
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: r210dec.c:36
uint8_t pixel
Definition: tiny_ssim.c:42
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:240
common internal api header.
common internal and external API header
static av_cold int decode_init(AVCodecContext *avctx)
Definition: r210dec.c:28
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:304
#define MKTAG(a, b, c, d)
Definition: common.h:366
This structure stores compressed data.
Definition: avcodec.h:1429
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:968