FFmpeg
r210enc.c
Go to the documentation of this file.
1 /*
2  * R210 encoder
3  *
4  * Copyright (c) 2012 Paul B Mahol
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 "encode.h"
25 #include "internal.h"
26 #include "bytestream.h"
27 
29 {
30  int aligned_width = FFALIGN(avctx->width,
31  avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
32 
33  avctx->bits_per_coded_sample = 32;
34  if (avctx->width > 0)
35  avctx->bit_rate = ff_guess_coded_bitrate(avctx) * aligned_width / avctx->width;
36 
37  return 0;
38 }
39 
41  const AVFrame *pic, int *got_packet)
42 {
43  int i, j, ret;
44  int aligned_width = FFALIGN(avctx->width,
45  avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
46  int pad = (aligned_width - avctx->width) * 4;
47  uint8_t *srcr_line, *srcg_line, *srcb_line;
48  uint8_t *dst;
49 
50  ret = ff_get_encode_buffer(avctx, pkt, 4 * aligned_width * avctx->height, 0);
51  if (ret < 0)
52  return ret;
53 
54  srcg_line = pic->data[0];
55  srcb_line = pic->data[1];
56  srcr_line = pic->data[2];
57  dst = pkt->data;
58 
59  for (i = 0; i < avctx->height; i++) {
60  uint16_t *srcr = (uint16_t *)srcr_line;
61  uint16_t *srcg = (uint16_t *)srcg_line;
62  uint16_t *srcb = (uint16_t *)srcb_line;
63  for (j = 0; j < avctx->width; j++) {
64  uint32_t pixel;
65  unsigned r = *srcr++;
66  unsigned g = *srcg++;
67  unsigned b = *srcb++;
68  if (avctx->codec_id == AV_CODEC_ID_R210)
69  pixel = (r << 20) | (g << 10) | b;
70  else
71  pixel = (r << 22) | (g << 12) | (b << 2);
72  if (avctx->codec_id == AV_CODEC_ID_AVRP)
73  bytestream_put_le32(&dst, pixel);
74  else
75  bytestream_put_be32(&dst, pixel);
76  }
77  memset(dst, 0, pad);
78  dst += pad;
79  srcr_line += pic->linesize[2];
80  srcg_line += pic->linesize[0];
81  srcb_line += pic->linesize[1];
82  }
83 
85  *got_packet = 1;
86  return 0;
87 }
88 
90 
91 #if CONFIG_R210_ENCODER
92 const AVCodec ff_r210_encoder = {
93  .name = "r210",
94  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
95  .type = AVMEDIA_TYPE_VIDEO,
96  .id = AV_CODEC_ID_R210,
97  .capabilities = AV_CODEC_CAP_DR1,
98  .init = encode_init,
99  .encode2 = encode_frame,
100  .pix_fmts = pix_fmt,
101  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
102 };
103 #endif
104 #if CONFIG_R10K_ENCODER
105 const AVCodec ff_r10k_encoder = {
106  .name = "r10k",
107  .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
108  .type = AVMEDIA_TYPE_VIDEO,
109  .id = AV_CODEC_ID_R10K,
110  .capabilities = AV_CODEC_CAP_DR1,
111  .init = encode_init,
112  .encode2 = encode_frame,
113  .pix_fmts = pix_fmt,
114  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
115 };
116 #endif
117 #if CONFIG_AVRP_ENCODER
118 const AVCodec ff_avrp_encoder = {
119  .name = "avrp",
120  .long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
121  .type = AVMEDIA_TYPE_VIDEO,
122  .id = AV_CODEC_ID_AVRP,
123  .capabilities = AV_CODEC_CAP_DR1,
124  .init = encode_init,
125  .encode2 = encode_frame,
126  .pix_fmts = pix_fmt,
127  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
128 };
129 #endif
ff_guess_coded_bitrate
int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
Get an estimated video bitrate based on frame size, frame rate and coded bits per pixel.
Definition: utils.c:1105
AVCodec
AVCodec.
Definition: codec.h:197
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: internal.h:41
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
r
const char * r
Definition: vf_curves.c:116
encode_init
static av_cold int encode_init(AVCodecContext *avctx)
Definition: r210enc.c:28
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:365
encode.h
b
#define b
Definition: input.c:41
AV_CODEC_ID_R10K
@ AV_CODEC_ID_R10K
Definition: codec_id.h:195
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:396
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:405
AV_CODEC_ID_R210
@ AV_CODEC_ID_R210
Definition: codec_id.h:183
ff_avrp_encoder
const AVCodec ff_avrp_encoder
pkt
AVPacket * pkt
Definition: movenc.c:59
av_cold
#define av_cold
Definition: attributes.h:90
g
const char * g
Definition: vf_curves.c:117
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:394
ff_r210_encoder
const AVCodec ff_r210_encoder
pixel
uint8_t pixel
Definition: tiny_ssim.c:42
AVCodecContext::bit_rate
int64_t bit_rate
the average bitrate
Definition: avcodec.h:434
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
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:117
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:371
AVCodecContext::bits_per_coded_sample
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:1407
i
int i
Definition: input.c:407
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:204
AVCodecContext::height
int height
Definition: avcodec.h:557
avcodec.h
ret
ret
Definition: filter_design.txt:187
AV_CODEC_ID_AVRP
@ AV_CODEC_ID_AVRP
Definition: codec_id.h:251
AVCodecContext
main external API structure.
Definition: avcodec.h:384
ff_get_encode_buffer
int ff_get_encode_buffer(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int flags)
Get a buffer for a packet.
Definition: encode.c:77
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:48
AVPacket
This structure stores compressed data.
Definition: packet.h:342
encode_frame
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: r210enc.c:40
pix_fmt
static enum AVPixelFormat pix_fmt[]
Definition: r210enc.c:89
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:557
bytestream.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
ff_r10k_encoder
const AVCodec ff_r10k_encoder