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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 
encode_init(AVCodecContext * avctx)27 static av_cold int encode_init(AVCodecContext *avctx)
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 
encode_frame(AVCodecContext * avctx,AVPacket * pkt,const AVFrame * pic,int * got_packet)39 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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 *srcr_line, *srcg_line, *srcb_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     srcg_line = pic->data[0];
53     srcb_line = pic->data[1];
54     srcr_line = pic->data[2];
55     dst = pkt->data;
56 
57     for (i = 0; i < avctx->height; i++) {
58         uint16_t *srcr = (uint16_t *)srcr_line;
59         uint16_t *srcg = (uint16_t *)srcg_line;
60         uint16_t *srcb = (uint16_t *)srcb_line;
61         for (j = 0; j < avctx->width; j++) {
62             uint32_t pixel;
63             unsigned r = *srcr++;
64             unsigned g = *srcg++;
65             unsigned b = *srcb++;
66             if (avctx->codec_id == AV_CODEC_ID_R210)
67                 pixel = (r << 20) | (g << 10) | b;
68             else
69                 pixel = (r << 22) | (g << 12) | (b << 2);
70             if (avctx->codec_id == AV_CODEC_ID_AVRP)
71                 bytestream_put_le32(&dst, pixel);
72             else
73                 bytestream_put_be32(&dst, pixel);
74         }
75         memset(dst, 0, pad);
76         dst += pad;
77         srcr_line += pic->linesize[2];
78         srcg_line += pic->linesize[0];
79         srcb_line += pic->linesize[1];
80     }
81 
82     pkt->flags |= AV_PKT_FLAG_KEY;
83     *got_packet = 1;
84     return 0;
85 }
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     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_GBRP10, AV_PIX_FMT_NONE },
97 };
98 #endif
99 #if CONFIG_R10K_ENCODER
100 AVCodec ff_r10k_encoder = {
101     .name           = "r10k",
102     .long_name      = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
103     .type           = AVMEDIA_TYPE_VIDEO,
104     .id             = AV_CODEC_ID_R10K,
105     .init           = encode_init,
106     .encode2        = encode_frame,
107     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_GBRP10, AV_PIX_FMT_NONE },
108 };
109 #endif
110 #if CONFIG_AVRP_ENCODER
111 AVCodec ff_avrp_encoder = {
112     .name           = "avrp",
113     .long_name      = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
114     .type           = AVMEDIA_TYPE_VIDEO,
115     .id             = AV_CODEC_ID_AVRP,
116     .init           = encode_init,
117     .encode2        = encode_frame,
118     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_GBRP10, AV_PIX_FMT_NONE },
119 };
120 #endif
121