2 * AVID Meridien encoder
4 * Copyright (c) 2012 Carl Eugen Hoyos
6 * This file is part of FFmpeg.
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.
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.
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
25 #include "libavutil/intreadwrite.h"
27 static av_cold int avui_encode_init(AVCodecContext *avctx)
29 if (avctx->width != 720 || avctx->height != 486 && avctx->height != 576) {
30 av_log(avctx, AV_LOG_ERROR, "Only 720x486 and 720x576 are supported.\n");
31 return AVERROR(EINVAL);
33 if (!(avctx->extradata = av_mallocz(144 + AV_INPUT_BUFFER_PADDING_SIZE)))
34 return AVERROR(ENOMEM);
35 avctx->extradata_size = 144;
36 memcpy(avctx->extradata, "\0\0\0\x18""APRGAPRG0001", 16);
37 if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
38 avctx->extradata[19] = 2;
40 avctx->extradata[19] = 1;
42 memcpy(avctx->extradata + 24, "\0\0\0\x78""ARESARES0001""\0\0\0\x98", 20);
43 AV_WB32(avctx->extradata + 44, avctx->width);
44 AV_WB32(avctx->extradata + 48, avctx->height);
45 memcpy(avctx->extradata + 52, "\0\0\0\x1\0\0\0\x20\0\0\0\x2", 12);
51 static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
52 const AVFrame *pic, int *got_packet)
55 int i, j, skip, ret, size, interlaced;
57 interlaced = avctx->field_order > AV_FIELD_PROGRESSIVE;
59 if (avctx->height == 486) {
64 size = 2 * avctx->width * (avctx->height + skip) + 8 * interlaced;
65 if ((ret = ff_alloc_packet2(avctx, pkt, size, size)) < 0)
69 memset(dst, 0, avctx->width * skip);
70 dst += avctx->width * skip;
73 for (i = 0; i <= interlaced; i++) {
75 if (interlaced && avctx->height == 486) {
76 src = pic->data[0] + (1 - i) * pic->linesize[0];
78 src = pic->data[0] + i * pic->linesize[0];
80 memset(dst, 0, avctx->width * skip + 4 * i);
81 dst += avctx->width * skip + 4 * i;
82 for (j = 0; j < avctx->height; j += interlaced + 1) {
83 memcpy(dst, src, avctx->width * 2);
84 src += (interlaced + 1) * pic->linesize[0];
85 dst += avctx->width * 2;
89 pkt->flags |= AV_PKT_FLAG_KEY;
94 AVCodec ff_avui_encoder = {
96 .long_name = NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"),
97 .type = AVMEDIA_TYPE_VIDEO,
98 .id = AV_CODEC_ID_AVUI,
99 .init = avui_encode_init,
100 .encode2 = avui_encode_frame,
101 .capabilities = AV_CODEC_CAP_EXPERIMENTAL | AV_CODEC_CAP_INTRA_ONLY,
102 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_UYVY422, AV_PIX_FMT_NONE },