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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  avctx->coded_frame = av_frame_alloc();
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  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
92  .type = AVMEDIA_TYPE_VIDEO,
93  .id = AV_CODEC_ID_R210,
94  .init = encode_init,
95  .encode2 = encode_frame,
96  .close = encode_close,
97  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
98 };
99 #endif
100 #if CONFIG_R10K_ENCODER
101 AVCodec ff_r10k_encoder = {
102  .name = "r10k",
103  .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
104  .type = AVMEDIA_TYPE_VIDEO,
105  .id = AV_CODEC_ID_R10K,
106  .init = encode_init,
107  .encode2 = encode_frame,
108  .close = encode_close,
109  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
110 };
111 #endif
112 #if CONFIG_AVRP_ENCODER
113 AVCodec ff_avrp_encoder = {
114  .name = "avrp",
115  .long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
116  .type = AVMEDIA_TYPE_VIDEO,
117  .id = AV_CODEC_ID_AVRP,
118  .init = encode_init,
119  .encode2 = encode_frame,
120  .close = encode_close,
121  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
122 };
123 #endif