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 {
30 
31  if (!avctx->coded_frame)
32  return AVERROR(ENOMEM);
33 
34  return 0;
35 }
36 
38  const AVFrame *pic, int *got_packet)
39 {
40  int i, j, ret;
41  int aligned_width = FFALIGN(avctx->width,
42  avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
43  int pad = (aligned_width - avctx->width) * 4;
44  uint8_t *src_line;
45  uint8_t *dst;
46 
47  if ((ret = ff_alloc_packet2(avctx, pkt, 4 * aligned_width * avctx->height)) < 0)
48  return ret;
49 
50  avctx->coded_frame->key_frame = 1;
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++ >> 4;
62  if (avctx->codec_id == AV_CODEC_ID_R210)
63  pixel = (r << 20) | (g << 10) | b >> 2;
64  else
65  pixel = (r << 22) | (g << 12) | b;
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 
82 {
83  av_freep(&avctx->coded_frame);
84 
85  return 0;
86 }
87 
88 #if CONFIG_R210_ENCODER
89 AVCodec ff_r210_encoder = {
90  .name = "r210",
91  .type = AVMEDIA_TYPE_VIDEO,
92  .id = AV_CODEC_ID_R210,
93  .init = encode_init,
94  .encode2 = encode_frame,
95  .close = encode_close,
96  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
97  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
98 };
99 #endif
100 #if CONFIG_R10K_ENCODER
101 AVCodec ff_r10k_encoder = {
102  .name = "r10k",
103  .type = AVMEDIA_TYPE_VIDEO,
104  .id = AV_CODEC_ID_R10K,
105  .init = encode_init,
106  .encode2 = encode_frame,
107  .close = encode_close,
108  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
109  .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
110 };
111 #endif
112 #if CONFIG_AVRP_ENCODER
113 AVCodec ff_avrp_encoder = {
114  .name = "avrp",
115  .type = AVMEDIA_TYPE_VIDEO,
116  .id = AV_CODEC_ID_AVRP,
117  .init = encode_init,
118  .encode2 = encode_frame,
119  .close = encode_close,
120  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
121  .long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
122 };
123 #endif
Definition: frame.h:76
static av_cold int encode_init(AVCodecContext *avctx)
Definition: r210enc.c:27
#define FFALIGN(x, a)
Definition: common.h:63
void av_freep(void *arg)
Definition: mem.c:198
uint8_t
#define av_cold
Definition: attributes.h:78
static AVPacket pkt
Definition: demuxing.c:56
#define b
Definition: input.c:42
uint8_t * data
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define NULL_IF_CONFIG_SMALL(x)
const char * r
Definition: vf_curves.c:94
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:267
const char * name
AVFrame * avcodec_alloc_frame(void)
FFT buffer for g
Definition: stft_peak.m:17
enum AVPictureType pict_type
Definition: frame.h:144
ret
Definition: avfilter.c:821
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size)
AVS_Value src
Definition: avisynth_c.h:523
enum AVCodecID codec_id
int linesize[AV_NUM_DATA_POINTERS]
Definition: frame.h:101
synthesis window for stochastic i
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFilterBuffer structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Buffer references ownership and permissions
uint8_t pixel
Definition: tiny_ssim.c:40
static av_cold int encode_close(AVCodecContext *avctx)
Definition: r210enc.c:81
uint8_t * data[AV_NUM_DATA_POINTERS]
Definition: frame.h:87
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: r210enc.c:37
else dst[i][x+y *dst_stride[i]]
Definition: vf_mcdeint.c:160
int key_frame
Definition: frame.h:139
AVPixelFormat
Definition: pixfmt.h:66