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
26 static av_cold int avui_encode_init(AVCodecContext *avctx)
28 avctx->coded_frame = avcodec_alloc_frame();
30 if (avctx->width != 720 || avctx->height != 486 && avctx->height != 576) {
31 av_log(avctx, AV_LOG_ERROR, "Only 720x486 and 720x576 are supported.\n");
32 return AVERROR(EINVAL);
34 if (!avctx->coded_frame) {
35 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
36 return AVERROR(ENOMEM);
42 static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
43 const AVFrame *pic, int *got_packet)
45 uint8_t *dst, *src = pic->data[0];
46 int i, j, skip, ret, size, interlaced;
48 interlaced = avctx->field_order > AV_FIELD_PROGRESSIVE;
50 if (avctx->height == 486) {
55 size = 2 * avctx->width * (avctx->height + skip) + 8 * interlaced;
56 if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0)
59 if (!(avctx->extradata = av_mallocz(24 + FF_INPUT_BUFFER_PADDING_SIZE)))
60 return AVERROR(ENOMEM);
61 avctx->extradata_size = 24;
62 memcpy(avctx->extradata, "\0\0\0\x18""APRGAPRG0001", 16);
64 avctx->extradata[19] = 2;
66 avctx->extradata[19] = 1;
67 dst += avctx->width * skip;
70 avctx->coded_frame->reference = 0;
71 avctx->coded_frame->key_frame = 1;
72 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
74 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 dst += avctx->width * skip + 4 * i;
81 for (j = 0; j < avctx->height; j += interlaced + 1) {
82 memcpy(dst, src, avctx->width * 2);
83 src += (interlaced + 1) * pic->linesize[0];
84 dst += avctx->width * 2;
88 pkt->flags |= AV_PKT_FLAG_KEY;
93 static av_cold int avui_encode_close(AVCodecContext *avctx)
95 av_freep(&avctx->coded_frame);
100 AVCodec ff_avui_encoder = {
102 .type = AVMEDIA_TYPE_VIDEO,
104 .init = avui_encode_init,
105 .encode2 = avui_encode_frame,
106 .close = avui_encode_close,
107 .pix_fmts = (const enum PixelFormat[]){ PIX_FMT_UYVY422, PIX_FMT_NONE },
108 .long_name = NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"),