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v308enc.c
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1 /*
2  * v308 encoder
3  *
4  * Copyright (c) 2011 Carl Eugen Hoyos
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/intreadwrite.h"
24 #include "avcodec.h"
25 #include "internal.h"
26 
28 {
29  if (avctx->width & 1) {
30  av_log(avctx, AV_LOG_ERROR, "v308 requires width to be even.\n");
31  return AVERROR_INVALIDDATA;
32  }
33 
34  return 0;
35 }
36 
38  const AVFrame *pic, int *got_packet)
39 {
40  uint8_t *dst;
41  uint8_t *y, *u, *v;
42  int i, j, ret;
43 
44  if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 3, 0)) < 0)
45  return ret;
46  dst = pkt->data;
47 
48  y = pic->data[0];
49  u = pic->data[1];
50  v = pic->data[2];
51 
52  for (i = 0; i < avctx->height; i++) {
53  for (j = 0; j < avctx->width; j++) {
54  *dst++ = v[j];
55  *dst++ = y[j];
56  *dst++ = u[j];
57  }
58  y += pic->linesize[0];
59  u += pic->linesize[1];
60  v += pic->linesize[2];
61  }
62 
63  pkt->flags |= AV_PKT_FLAG_KEY;
64  *got_packet = 1;
65  return 0;
66 }
67 
69 {
70  return 0;
71 }
72 
74  .name = "v308",
75  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"),
76  .type = AVMEDIA_TYPE_VIDEO,
77  .id = AV_CODEC_ID_V308,
78  .init = v308_encode_init,
79  .encode2 = v308_encode_frame,
80  .close = v308_encode_close,
81  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE },
82  .capabilities = AV_CODEC_CAP_INTRA_ONLY,
83 };
float v
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:68
static AVPacket pkt
AVCodec.
Definition: avcodec.h:3471
#define AV_CODEC_CAP_INTRA_ONLY
Codec is intra only.
Definition: avcodec.h:939
uint8_t
#define av_cold
Definition: attributes.h:74
uint8_t * data
Definition: avcodec.h:1422
#define av_log(a,...)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1468
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
static int v308_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: v308enc.c:37
const char * name
Name of the codec implementation.
Definition: avcodec.h:3478
Libavcodec external API header.
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1428
AVCodec ff_v308_encoder
Definition: v308enc.c:73
float y
int width
picture width / height.
Definition: avcodec.h:1680
float u
static av_cold int v308_encode_close(AVCodecContext *avctx)
Definition: v308enc.c:68
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:199
main external API structure.
Definition: avcodec.h:1501
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: utils.c:1782
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:182
common internal api header.
static av_cold int v308_encode_init(AVCodecContext *avctx)
Definition: v308enc.c:27
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
This structure stores compressed data.
Definition: avcodec.h:1399