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v410enc.c
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1 /*
2  * v410 encoder
3  *
4  * Copyright (c) 2011 Derek Buitenhuis
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/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 width to be even.\n");
32  return AVERROR_INVALIDDATA;
33  }
34 
35  avctx->bits_per_coded_sample = 32;
36  avctx->bit_rate = ff_guess_coded_bitrate(avctx);
37 
38  return 0;
39 }
40 
42  const AVFrame *pic, int *got_packet)
43 {
44  uint8_t *dst;
45  uint16_t *y, *u, *v;
46  uint32_t val;
47  int i, j, ret;
48 
49  if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4,
50  avctx->width * avctx->height * 4)) < 0)
51  return ret;
52  dst = pkt->data;
53 
54 #if FF_API_CODED_FRAME
56  avctx->coded_frame->key_frame = 1;
59 #endif
60 
61  y = (uint16_t *)pic->data[0];
62  u = (uint16_t *)pic->data[1];
63  v = (uint16_t *)pic->data[2];
64 
65  for (i = 0; i < avctx->height; i++) {
66  for (j = 0; j < avctx->width; j++) {
67  val = u[j] << 2;
68  val |= y[j] << 12;
69  val |= (uint32_t) v[j] << 22;
70  AV_WL32(dst, val);
71  dst += 4;
72  }
73  y += pic->linesize[0] >> 1;
74  u += pic->linesize[1] >> 1;
75  v += pic->linesize[2] >> 1;
76  }
77 
78  pkt->flags |= AV_PKT_FLAG_KEY;
79  *got_packet = 1;
80  return 0;
81 }
82 
84  .name = "v410",
85  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
86  .type = AVMEDIA_TYPE_VIDEO,
87  .id = AV_CODEC_ID_V410,
88  .init = v410_encode_init,
89  .encode2 = v410_encode_frame,
90  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
91 };
const char const char void * val
Definition: avisynth_c.h:771
#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:194
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1808
static av_cold int v410_encode_init(AVCodecContext *avctx)
Definition: v410enc.c:28
static AVPacket pkt
AVCodec.
Definition: avcodec.h:3719
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:32
uint8_t
#define av_cold
Definition: attributes.h:82
uint8_t * data
Definition: avcodec.h:1668
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:3137
#define av_log(a,...)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1700
#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:179
const char * name
Name of the codec implementation.
Definition: avcodec.h:3726
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:354
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1674
int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
Get an estimated video bitrate based on frame size, frame rate and coded bits per pixel...
Definition: utils.c:2454
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:277
int width
picture width / height.
Definition: avcodec.h:1930
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:225
main external API structure.
Definition: avcodec.h:1743
#define u(width,...)
AVCodec ff_v410_encoder
Definition: v410enc.c:83
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:208
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:83
common internal api header.
common internal and external API header
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3163
static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: v410enc.c:41
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:272
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1645
for(j=16;j >0;--j)
#define AV_WL32(p, v)
Definition: intreadwrite.h:431