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r210enc.c
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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 "internal.h"
25 #include "bytestream.h"
26 
28 {
29  int aligned_width = FFALIGN(avctx->width,
30  avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
31 
32  avctx->bits_per_coded_sample = 32;
33  if (avctx->width > 0)
34  avctx->bit_rate = ff_guess_coded_bitrate(avctx) * aligned_width / avctx->width;
35 
36  return 0;
37 }
38 
40  const AVFrame *pic, int *got_packet)
41 {
42  int i, j, ret;
43  int aligned_width = FFALIGN(avctx->width,
44  avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
45  int pad = (aligned_width - avctx->width) * 4;
46  uint8_t *src_line;
47  uint8_t *dst;
48 
49  if ((ret = ff_alloc_packet2(avctx, pkt, 4 * aligned_width * avctx->height, 0)) < 0)
50  return ret;
51 
52  src_line = pic->data[0];
53  dst = pkt->data;
54 
55  for (i = 0; i < avctx->height; i++) {
56  uint16_t *src = (uint16_t *)src_line;
57  for (j = 0; j < avctx->width; j++) {
58  uint32_t pixel;
59  uint16_t r = *src++ >> 6;
60  uint16_t g = *src++ >> 6;
61  uint16_t b = *src++ >> 6;
62  if (avctx->codec_id == AV_CODEC_ID_R210)
63  pixel = (r << 20) | (g << 10) | b;
64  else
65  pixel = (r << 22) | (g << 12) | (b << 2);
66  if (avctx->codec_id == AV_CODEC_ID_AVRP)
67  bytestream_put_le32(&dst, pixel);
68  else
69  bytestream_put_be32(&dst, pixel);
70  }
71  memset(dst, 0, pad);
72  dst += pad;
73  src_line += pic->linesize[0];
74  }
75 
76  pkt->flags |= AV_PKT_FLAG_KEY;
77  *got_packet = 1;
78  return 0;
79 }
80 
81 
82 #if CONFIG_R210_ENCODER
83 AVCodec ff_r210_encoder = {
84  .name = "r210",
85  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
86  .type = AVMEDIA_TYPE_VIDEO,
87  .id = AV_CODEC_ID_R210,
88  .init = encode_init,
89  .encode2 = encode_frame,
90  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
91  .capabilities = AV_CODEC_CAP_INTRA_ONLY,
92 };
93 #endif
94 #if CONFIG_R10K_ENCODER
95 AVCodec ff_r10k_encoder = {
96  .name = "r10k",
97  .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
98  .type = AVMEDIA_TYPE_VIDEO,
99  .id = AV_CODEC_ID_R10K,
100  .init = encode_init,
101  .encode2 = encode_frame,
102  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
103  .capabilities = AV_CODEC_CAP_INTRA_ONLY,
104 };
105 #endif
106 #if CONFIG_AVRP_ENCODER
107 AVCodec ff_avrp_encoder = {
108  .name = "avrp",
109  .long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
110  .type = AVMEDIA_TYPE_VIDEO,
111  .id = AV_CODEC_ID_AVRP,
112  .init = encode_init,
113  .encode2 = encode_frame,
114  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
115  .capabilities = AV_CODEC_CAP_INTRA_ONLY,
116 };
117 #endif
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1538
const char * g
Definition: vf_curves.c:112
const char * b
Definition: vf_curves.c:113
static av_cold int encode_init(AVCodecContext *avctx)
Definition: r210enc.c:27
static AVPacket pkt
#define src
Definition: vp8dsp.c:254
AVCodec.
Definition: avcodec.h:3351
#define AV_CODEC_CAP_INTRA_ONLY
Codec is intra only.
Definition: avcodec.h:1042
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:32
uint8_t
#define av_cold
Definition: attributes.h:82
uint8_t * data
Definition: avcodec.h:1400
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:2704
#define FFALIGN(x, a)
Definition: macros.h:48
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1432
#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
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1406
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:2406
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
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.
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: r210enc.c:39
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1377