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
27static av_cold int encode_init(AVCodecContext *avctx)
28{
29    avctx->coded_frame = av_frame_alloc();
30
31    if (!avctx->coded_frame)
32        return AVERROR(ENOMEM);
33
34    return 0;
35}
36
37static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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;
51    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
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
81static av_cold int encode_close(AVCodecContext *avctx)
82{
83    av_freep(&avctx->coded_frame);
84
85    return 0;
86}
87
88#if CONFIG_R210_ENCODER
89AVCodec 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
101AVCodec 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
113AVCodec 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
124