FFmpeg
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 "encode.h"
27 #include "internal.h"
28 
30 {
31  if (avctx->width & 1) {
32  av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
33  return AVERROR_INVALIDDATA;
34  }
35 
36  avctx->bits_per_coded_sample = 32;
37  avctx->bit_rate = ff_guess_coded_bitrate(avctx);
38 
39  return 0;
40 }
41 
43  const AVFrame *pic, int *got_packet)
44 {
45  uint8_t *dst;
46  uint16_t *y, *u, *v;
47  uint32_t val;
48  int i, j, ret;
49 
50  ret = ff_get_encode_buffer(avctx, pkt, avctx->width * avctx->height * 4, 0);
51  if (ret < 0)
52  return ret;
53  dst = pkt->data;
54 
55  y = (uint16_t *)pic->data[0];
56  u = (uint16_t *)pic->data[1];
57  v = (uint16_t *)pic->data[2];
58 
59  for (i = 0; i < avctx->height; i++) {
60  for (j = 0; j < avctx->width; j++) {
61  val = u[j] << 2;
62  val |= y[j] << 12;
63  val |= (uint32_t) v[j] << 22;
64  AV_WL32(dst, val);
65  dst += 4;
66  }
67  y += pic->linesize[0] >> 1;
68  u += pic->linesize[1] >> 1;
69  v += pic->linesize[2] >> 1;
70  }
71 
72  *got_packet = 1;
73  return 0;
74 }
75 
77  .name = "v410",
78  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
79  .type = AVMEDIA_TYPE_VIDEO,
80  .id = AV_CODEC_ID_V410,
81  .capabilities = AV_CODEC_CAP_DR1,
82  .init = v410_encode_init,
83  .encode2 = v410_encode_frame,
84  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
85  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
86 };
ff_guess_coded_bitrate
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:1113
AVCodec
AVCodec.
Definition: codec.h:202
FF_CODEC_CAP_INIT_THREADSAFE
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:42
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:264
v410_encode_init
static av_cold int v410_encode_init(AVCodecContext *avctx)
Definition: v410enc.c:29
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:373
encode.h
ff_v410_encoder
const AVCodec ff_v410_encoder
Definition: v410enc.c:76
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
val
static double val(void *priv, double ch)
Definition: aeval.c:76
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:394
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
intreadwrite.h
AVCodecContext::bit_rate
int64_t bit_rate
the average bitrate
Definition: avcodec.h:433
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AVCodecContext::bits_per_coded_sample
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:1418
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
common.h
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:209
AVCodecContext::height
int height
Definition: avcodec.h:556
avcodec.h
ret
ret
Definition: filter_design.txt:187
AVCodecContext
main external API structure.
Definition: avcodec.h:383
AV_CODEC_ID_V410
@ AV_CODEC_ID_V410
Definition: codec_id.h:207
ff_get_encode_buffer
int ff_get_encode_buffer(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int flags)
Get a buffer for a packet.
Definition: encode.c:78
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPacket
This structure stores compressed data.
Definition: packet.h:350
v410_encode_frame
static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: v410enc.c:42
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:556
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61