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 + FF_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);
47 avctx->coded_frame = av_frame_alloc();
48 if (!avctx->coded_frame) {
49 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
50 return AVERROR(ENOMEM);
56 static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
57 const AVFrame *pic, int *got_packet)
60 int i, j, skip, ret, size, interlaced;
62 interlaced = avctx->field_order > AV_FIELD_PROGRESSIVE;
64 if (avctx->height == 486) {
69 size = 2 * avctx->width * (avctx->height + skip) + 8 * interlaced;
70 if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0)
74 dst += avctx->width * skip;
77 avctx->coded_frame->key_frame = 1;
78 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
80 for (i = 0; i <= interlaced; i++) {
82 if (interlaced && avctx->height == 486) {
83 src = pic->data[0] + (1 - i) * pic->linesize[0];
85 src = pic->data[0] + i * pic->linesize[0];
87 dst += avctx->width * skip + 4 * i;
88 for (j = 0; j < avctx->height; j += interlaced + 1) {
89 memcpy(dst, src, avctx->width * 2);
90 src += (interlaced + 1) * pic->linesize[0];
91 dst += avctx->width * 2;
95 pkt->flags |= AV_PKT_FLAG_KEY;
100 static av_cold int avui_encode_close(AVCodecContext *avctx)
102 av_freep(&avctx->coded_frame);
107 AVCodec ff_avui_encoder = {
109 .long_name = NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"),
110 .type = AVMEDIA_TYPE_VIDEO,
111 .id = AV_CODEC_ID_AVUI,
112 .init = avui_encode_init,
113 .encode2 = avui_encode_frame,
114 .close = avui_encode_close,
115 .capabilities = CODEC_CAP_EXPERIMENTAL,
116 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_UYVY422, AV_PIX_FMT_NONE },