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 if (avctx
->width
!= 720 || avctx
->height
!= 486 && avctx
->height
!= 576) {
29 av_log(avctx
, AV_LOG_ERROR
, "Only 720x486 and 720x576 are supported.\n");
30 return AVERROR(EINVAL
);
32 if (!(avctx
->extradata
= av_mallocz(24 + FF_INPUT_BUFFER_PADDING_SIZE
)))
33 return AVERROR(ENOMEM
);
34 avctx
->extradata_size
= 24;
35 memcpy(avctx
->extradata
, "\0\0\0\x18""APRGAPRG0001", 16);
36 if (avctx
->field_order
> AV_FIELD_PROGRESSIVE
) {
37 avctx
->extradata
[19] = 2;
39 avctx
->extradata
[19] = 1;
42 avctx
->coded_frame
= av_frame_alloc();
43 if (!avctx
->coded_frame
) {
44 av_log(avctx
, AV_LOG_ERROR
, "Could not allocate frame.\n");
45 return AVERROR(ENOMEM
);
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
)) < 0)
69 dst
+= avctx
->width
* skip
;
72 avctx
->coded_frame
->key_frame
= 1;
73 avctx
->coded_frame
->pict_type
= AV_PICTURE_TYPE_I
;
75 for (i
= 0; i
<= interlaced
; i
++) {
77 if (interlaced
&& avctx
->height
== 486) {
78 src
= pic
->data
[0] + (1 - i
) * pic
->linesize
[0];
80 src
= pic
->data
[0] + i
* pic
->linesize
[0];
82 dst
+= avctx
->width
* skip
+ 4 * i
;
83 for (j
= 0; j
< avctx
->height
; j
+= interlaced
+ 1) {
84 memcpy(dst
, src
, avctx
->width
* 2);
85 src
+= (interlaced
+ 1) * pic
->linesize
[0];
86 dst
+= avctx
->width
* 2;
90 pkt
->flags
|= AV_PKT_FLAG_KEY
;
95 static av_cold
int avui_encode_close(AVCodecContext
*avctx
)
97 av_freep(&avctx
->coded_frame
);
102 AVCodec ff_avui_encoder
= {
104 .long_name
= NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"),
105 .type
= AVMEDIA_TYPE_VIDEO
,
106 .id
= AV_CODEC_ID_AVUI
,
107 .init
= avui_encode_init
,
108 .encode2
= avui_encode_frame
,
109 .close
= avui_encode_close
,
110 .capabilities
= CODEC_CAP_EXPERIMENTAL
,
111 .pix_fmts
= (const enum AVPixelFormat
[]){ AV_PIX_FMT_UYVY422
, AV_PIX_FMT_NONE
},