v410enc.c
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1 /*
2  * v410 encoder
3  *
4  * Copyright (c) 2011 Derek Buitenhuis
5  *
6  * This file is part of Libav.
7  *
8  * Libav 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  * Libav 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 Libav; 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/common.h"
24 #include "libavutil/intreadwrite.h"
25 #include "avcodec.h"
26 #include "internal.h"
27 
29 {
30  if (avctx->width & 1) {
31  av_log(avctx, AV_LOG_ERROR, "v410 requires even width.\n");
32  return AVERROR_INVALIDDATA;
33  }
34 
36 
37  if (!avctx->coded_frame) {
38  av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
39  return AVERROR(ENOMEM);
40  }
41 
42  return 0;
43 }
44 
45 static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
46  const AVFrame *pic, int *got_packet)
47 {
48  uint8_t *dst;
49  uint16_t *y, *u, *v;
50  uint32_t val;
51  int i, j, ret;
52 
53  if ((ret = ff_alloc_packet(pkt, avctx->width * avctx->height * 4)) < 0) {
54  av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
55  return ret;
56  }
57  dst = pkt->data;
58 
59  avctx->coded_frame->reference = 0;
60  avctx->coded_frame->key_frame = 1;
62 
63  y = (uint16_t *)pic->data[0];
64  u = (uint16_t *)pic->data[1];
65  v = (uint16_t *)pic->data[2];
66 
67  for (i = 0; i < avctx->height; i++) {
68  for (j = 0; j < avctx->width; j++) {
69  val = u[j] << 2;
70  val |= y[j] << 12;
71  val |= (uint32_t) v[j] << 22;
72  AV_WL32(dst, val);
73  dst += 4;
74  }
75  y += pic->linesize[0] >> 1;
76  u += pic->linesize[1] >> 1;
77  v += pic->linesize[2] >> 1;
78  }
79 
80  pkt->flags |= AV_PKT_FLAG_KEY;
81  *got_packet = 1;
82  return 0;
83 }
84 
86 {
87  av_freep(&avctx->coded_frame);
88 
89  return 0;
90 }
91 
93  .name = "v410",
94  .type = AVMEDIA_TYPE_VIDEO,
95  .id = AV_CODEC_ID_V410,
96  .init = v410_encode_init,
97  .encode2 = v410_encode_frame,
98  .close = v410_encode_close,
99  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
100  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
101 };
This structure describes decoded (raw) audio or video data.
Definition: avcodec.h:989
AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:2725
static av_cold int v410_encode_init(AVCodecContext *avctx)
Definition: v410enc.c:28
AVCodec.
Definition: avcodec.h:2960
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:151
uint8_t
#define AV_WL32(p, d)
Definition: intreadwrite.h:255
uint8_t * data
Definition: avcodec.h:915
int reference
is this picture used as reference The values for this are the same as the MpegEncContext.picture_structure variable, that is 1->top field, 2->bottom field, 3->frame/both fields.
Definition: avcodec.h:1132
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:88
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:146
const char * name
Name of the codec implementation.
Definition: avcodec.h:2967
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:921
AVFrame * avcodec_alloc_frame(void)
Allocate an AVFrame and set its fields to default values.
Definition: utils.c:618
enum AVPictureType pict_type
Picture type of the frame, see ?_TYPE below.
Definition: avcodec.h:1065
int width
picture width / height.
Definition: avcodec.h:1508
int ff_alloc_packet(AVPacket *avpkt, int size)
Check AVPacket size and/or allocate data.
Definition: utils.c:880
external API header
int linesize[AV_NUM_DATA_POINTERS]
Size, in bytes, of the data for each picture/channel plane.
Definition: avcodec.h:1008
main external API structure.
Definition: avcodec.h:1339
AVCodec ff_v410_encoder
Definition: v410enc.c:92
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: avcodec.h:997
common internal api header.
common internal and external API header
static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: v410enc.c:45
int key_frame
1 -> keyframe, 0-> not
Definition: avcodec.h:1058
static av_cold int v410_encode_close(AVCodecContext *avctx)
Definition: v410enc.c:85
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63
This structure stores compressed data.
Definition: avcodec.h:898
for(j=16;j >0;--j)