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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  if ((avctx->codec_tag & 0xFFFFFF) == MKTAG('r', '1', '0', 0)) {
31  avctx->pix_fmt = AV_PIX_FMT_BGR48;
32  } else {
33  avctx->pix_fmt = AV_PIX_FMT_RGB48;
34  }
35  avctx->bits_per_raw_sample = 10;
36 
37  return 0;
38 }
39 
40 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
41  AVPacket *avpkt)
42 {
43  int h, w, ret;
44  AVFrame *pic = data;
45  const uint32_t *src = (const uint32_t *)avpkt->data;
46  int aligned_width = FFALIGN(avctx->width,
47  avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
48  uint8_t *dst_line;
49  int r10 = (avctx->codec_tag & 0xFFFFFF) == MKTAG('r', '1', '0', 0);
50  int le = avctx->codec_tag == MKTAG('R', '1', '0', 'k') &&
51  avctx->extradata_size >= 12 && !memcmp(&avctx->extradata[4], "DpxE", 4) &&
52  !avctx->extradata[11];
53 
54  if (avpkt->size < 4 * aligned_width * avctx->height) {
55  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
56  return AVERROR_INVALIDDATA;
57  }
58 
59  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
60  return ret;
61 
63  pic->key_frame = 1;
64  dst_line = pic->data[0];
65 
66  for (h = 0; h < avctx->height; h++) {
67  uint16_t *dst = (uint16_t *)dst_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 || r10) {
77  b = pixel << 6;
78  g = (pixel >> 4) & 0xffc0;
79  r = (pixel >> 14) & 0xffc0;
80  } else {
81  b = (pixel << 4) & 0xffc0;
82  g = (pixel >> 6) & 0xffc0;
83  r = (pixel >> 16) & 0xffc0;
84  }
85  *dst++ = r | (r >> 10);
86  *dst++ = g | (g >> 10);
87  *dst++ = b | (b >> 10);
88  }
89  src += aligned_width - avctx->width;
90  dst_line += pic->linesize[0];
91  }
92 
93  *got_frame = 1;
94 
95  return avpkt->size;
96 }
97 
98 #if CONFIG_R210_DECODER
99 AVCodec ff_r210_decoder = {
100  .name = "r210",
101  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
102  .type = AVMEDIA_TYPE_VIDEO,
103  .id = AV_CODEC_ID_R210,
104  .init = decode_init,
105  .decode = decode_frame,
106  .capabilities = AV_CODEC_CAP_DR1,
107  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
108 };
109 #endif
110 #if CONFIG_R10K_DECODER
111 AVCodec ff_r10k_decoder = {
112  .name = "r10k",
113  .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
114  .type = AVMEDIA_TYPE_VIDEO,
115  .id = AV_CODEC_ID_R10K,
116  .init = decode_init,
117  .decode = decode_frame,
118  .capabilities = AV_CODEC_CAP_DR1,
119  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
120 };
121 #endif
122 #if CONFIG_AVRP_DECODER
123 AVCodec ff_avrp_decoder = {
124  .name = "avrp",
125  .long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
126  .type = AVMEDIA_TYPE_VIDEO,
127  .id = AV_CODEC_ID_AVRP,
128  .init = decode_init,
129  .decode = decode_frame,
130  .capabilities = AV_CODEC_CAP_DR1,
131  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
132 };
133 #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:201
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
const char * g
Definition: vf_curves.c:112
int size
Definition: avcodec.h:1401
const char * b
Definition: vf_curves.c:113
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1697
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2711
#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:3351
#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:1588
uint8_t * data
Definition: avcodec.h:1400
#define AV_PIX_FMT_BGR48
Definition: pixfmt.h:359
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
#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:111
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:354
const char * name
Name of the codec implementation.
Definition: avcodec.h:3358
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
int width
picture width / height.
Definition: avcodec.h:1660
Libavcodec external API header.
enum AVCodecID codec_id
Definition: avcodec.h:1498
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
main external API structure.
Definition: avcodec.h:1488
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1513
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1886
int extradata_size
Definition: avcodec.h:1589
byte swapping routines
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: r210dec.c:40
uint8_t pixel
Definition: tiny_ssim.c:42
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
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:279
#define MKTAG(a, b, c, d)
Definition: common.h:366
This structure stores compressed data.
Definition: avcodec.h:1377
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:956