1/*
2 * v410 encoder
3 *
4 * Copyright (c) 2011 Derek Buitenhuis
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 "libavutil/common.h"
24#include "libavutil/intreadwrite.h"
25#include "avcodec.h"
26#include "internal.h"
27
28static av_cold int v410_encode_init(AVCodecContext *avctx)
29{
30    if (avctx->width & 1) {
31        av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
32        return AVERROR_INVALIDDATA;
33    }
34
35    avctx->coded_frame = av_frame_alloc();
36
37    if (!avctx->coded_frame) {
38        av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
39        return AVERROR(ENOMEM);
40    }
41
42    return 0;
43}
44
45static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
46                             const AVFrame *pic, int *got_packet)
47{
48    uint8_t *dst;
49    uint16_t *y, *u, *v;
50    uint32_t val;
51    int i, j, ret;
52
53    if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4)) < 0)
54        return ret;
55    dst = pkt->data;
56
57    avctx->coded_frame->key_frame = 1;
58    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
59
60    y = (uint16_t *)pic->data[0];
61    u = (uint16_t *)pic->data[1];
62    v = (uint16_t *)pic->data[2];
63
64    for (i = 0; i < avctx->height; i++) {
65        for (j = 0; j < avctx->width; j++) {
66            val  = u[j] << 2;
67            val |= y[j] << 12;
68            val |= (uint32_t) v[j] << 22;
69            AV_WL32(dst, val);
70            dst += 4;
71        }
72        y += pic->linesize[0] >> 1;
73        u += pic->linesize[1] >> 1;
74        v += pic->linesize[2] >> 1;
75    }
76
77    pkt->flags |= AV_PKT_FLAG_KEY;
78    *got_packet = 1;
79    return 0;
80}
81
82static av_cold int v410_encode_close(AVCodecContext *avctx)
83{
84    av_freep(&avctx->coded_frame);
85
86    return 0;
87}
88
89AVCodec ff_v410_encoder = {
90    .name         = "v410",
91    .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
92    .type         = AVMEDIA_TYPE_VIDEO,
93    .id           = AV_CODEC_ID_V410,
94    .init         = v410_encode_init,
95    .encode2      = v410_encode_frame,
96    .close        = v410_encode_close,
97    .pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
98};
99