FFmpeg
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 "codec_internal.h"
25 #include "config_components.h"
26 #include "internal.h"
27 #include "libavutil/bswap.h"
28 #include "libavutil/common.h"
29 
31 {
32  avctx->pix_fmt = AV_PIX_FMT_GBRP10;
33  avctx->bits_per_raw_sample = 10;
34 
35  return 0;
36 }
37 
38 static int decode_frame(AVCodecContext *avctx, AVFrame *pic,
39  int *got_frame, AVPacket *avpkt)
40 {
41  int h, w, ret;
42  const uint32_t *src = (const uint32_t *)avpkt->data;
43  int aligned_width = FFALIGN(avctx->width,
44  avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
45  uint8_t *g_line, *b_line, *r_line;
46  int r10 = (avctx->codec_tag & 0xFFFFFF) == MKTAG('r', '1', '0', 0);
47  int le = avctx->codec_tag == MKTAG('R', '1', '0', 'k') &&
48  avctx->extradata_size >= 12 && !memcmp(&avctx->extradata[4], "DpxE", 4) &&
49  !avctx->extradata[11];
50 
51  if (avpkt->size < 4 * aligned_width * avctx->height) {
52  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
53  return AVERROR_INVALIDDATA;
54  }
55 
56  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
57  return ret;
58 
60  pic->key_frame = 1;
61  g_line = pic->data[0];
62  b_line = pic->data[1];
63  r_line = pic->data[2];
64 
65  for (h = 0; h < avctx->height; h++) {
66  uint16_t *dstg = (uint16_t *)g_line;
67  uint16_t *dstb = (uint16_t *)b_line;
68  uint16_t *dstr = (uint16_t *)r_line;
69  for (w = 0; w < avctx->width; w++) {
70  uint32_t pixel;
71  uint16_t r, g, b;
72  if (avctx->codec_id == AV_CODEC_ID_AVRP || r10 || le) {
73  pixel = av_le2ne32(*src++);
74  } else {
75  pixel = av_be2ne32(*src++);
76  }
77  if (avctx->codec_id == AV_CODEC_ID_R210) {
78  b = pixel & 0x3ff;
79  g = (pixel >> 10) & 0x3ff;
80  r = (pixel >> 20) & 0x3ff;
81  } else if (r10) {
82  r = pixel & 0x3ff;
83  g = (pixel >> 10) & 0x3ff;
84  b = (pixel >> 20) & 0x3ff;
85  } else {
86  b = (pixel >> 2) & 0x3ff;
87  g = (pixel >> 12) & 0x3ff;
88  r = (pixel >> 22) & 0x3ff;
89  }
90  *dstr++ = r;
91  *dstg++ = g;
92  *dstb++ = b;
93  }
94  src += aligned_width - avctx->width;
95  g_line += pic->linesize[0];
96  b_line += pic->linesize[1];
97  r_line += pic->linesize[2];
98  }
99 
100  *got_frame = 1;
101 
102  return avpkt->size;
103 }
104 
105 #if CONFIG_R210_DECODER
106 const FFCodec ff_r210_decoder = {
107  .p.name = "r210",
108  .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
109  .p.type = AVMEDIA_TYPE_VIDEO,
110  .p.id = AV_CODEC_ID_R210,
111  .init = decode_init,
113  .p.capabilities = AV_CODEC_CAP_DR1,
114  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
115 };
116 #endif
117 #if CONFIG_R10K_DECODER
118 const FFCodec ff_r10k_decoder = {
119  .p.name = "r10k",
120  .p.long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
121  .p.type = AVMEDIA_TYPE_VIDEO,
122  .p.id = AV_CODEC_ID_R10K,
123  .init = decode_init,
125  .p.capabilities = AV_CODEC_CAP_DR1,
126  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
127 };
128 #endif
129 #if CONFIG_AVRP_DECODER
130 const FFCodec ff_avrp_decoder = {
131  .p.name = "avrp",
132  .p.long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
133  .p.type = AVMEDIA_TYPE_VIDEO,
134  .p.id = AV_CODEC_ID_AVRP,
135  .init = decode_init,
137  .p.capabilities = AV_CODEC_CAP_DR1,
138  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
139 };
140 #endif
r
const char * r
Definition: vf_curves.c:116
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
w
uint8_t w
Definition: llviddspenc.c:38
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:374
b
#define b
Definition: input.c:34
FFCodec
Definition: codec_internal.h:112
AV_CODEC_ID_R10K
@ AV_CODEC_ID_R10K
Definition: codec_id.h:195
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:346
decode_frame
static int decode_frame(AVCodecContext *avctx, AVFrame *pic, int *got_frame, AVPacket *avpkt)
Definition: r210dec.c:38
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:116
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:422
AV_CODEC_ID_R210
@ AV_CODEC_ID_R210
Definition: codec_id.h:183
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:417
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:491
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:254
g
const char * g
Definition: vf_curves.c:117
ff_avrp_decoder
const FFCodec ff_avrp_decoder
AVCodecContext::bits_per_raw_sample
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:1448
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:399
av_be2ne32
#define av_be2ne32(x)
Definition: bswap.h:93
pixel
uint8_t pixel
Definition: tiny_ssim.c:41
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:422
ff_get_buffer
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1403
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AVPacket::size
int size
Definition: packet.h:375
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:116
codec_internal.h
ff_r210_decoder
const FFCodec ff_r210_decoder
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:490
common.h
av_le2ne32
#define av_le2ne32(x)
Definition: bswap.h:96
FF_CODEC_CAP_INIT_THREADSAFE
#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: codec_internal.h:31
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:203
AVCodecContext::height
int height
Definition: avcodec.h:562
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:599
avcodec.h
ret
ret
Definition: filter_design.txt:187
bswap.h
AV_CODEC_ID_AVRP
@ AV_CODEC_ID_AVRP
Definition: codec_id.h:251
AVCodecContext
main external API structure.
Definition: avcodec.h:389
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: r210dec.c:30
ff_r10k_decoder
const FFCodec ff_r10k_decoder
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVCodecContext::codec_tag
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:414
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AVPacket
This structure stores compressed data.
Definition: packet.h:351
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:562
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:370
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
MKTAG
#define MKTAG(a, b, c, d)
Definition: macros.h:55
h
h
Definition: vp9dsp_template.c:2038