FFmpeg
v408enc.c
Go to the documentation of this file.
1 /*
2  * v408 encoder
3  *
4  * Copyright (c) 2012 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 "config_components.h"
24 
25 #include "libavutil/intreadwrite.h"
26 #include "avcodec.h"
27 #include "codec_internal.h"
28 #include "encode.h"
29 #include "internal.h"
30 
32 {
33  avctx->bits_per_coded_sample = 32;
34  avctx->bit_rate = ff_guess_coded_bitrate(avctx);
35 
36  return 0;
37 }
38 
40  const AVFrame *pic, int *got_packet)
41 {
42  uint8_t *dst;
43  uint8_t *y, *u, *v, *a;
44  int i, j, ret;
45 
46  ret = ff_get_encode_buffer(avctx, pkt, avctx->width * avctx->height * 4, 0);
47  if (ret < 0)
48  return ret;
49  dst = pkt->data;
50 
51  y = pic->data[0];
52  u = pic->data[1];
53  v = pic->data[2];
54  a = pic->data[3];
55 
56  for (i = 0; i < avctx->height; i++) {
57  for (j = 0; j < avctx->width; j++) {
58  if (avctx->codec_id==AV_CODEC_ID_AYUV) {
59  *dst++ = v[j];
60  *dst++ = u[j];
61  *dst++ = y[j];
62  *dst++ = a[j];
63  } else {
64  *dst++ = u[j];
65  *dst++ = y[j];
66  *dst++ = v[j];
67  *dst++ = a[j];
68  }
69  }
70  y += pic->linesize[0];
71  u += pic->linesize[1];
72  v += pic->linesize[2];
73  a += pic->linesize[3];
74  }
75 
76  *got_packet = 1;
77  return 0;
78 }
79 
81 
82 #if CONFIG_AYUV_ENCODER
83 const FFCodec ff_ayuv_encoder = {
84  .p.name = "ayuv",
85  .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"),
86  .p.type = AVMEDIA_TYPE_VIDEO,
87  .p.id = AV_CODEC_ID_AYUV,
88  .p.capabilities = AV_CODEC_CAP_DR1,
89  .init = v408_encode_init,
91  .p.pix_fmts = pix_fmt,
92  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
93 };
94 #endif
95 #if CONFIG_V408_ENCODER
96 const FFCodec ff_v408_encoder = {
97  .p.name = "v408",
98  .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"),
99  .p.type = AVMEDIA_TYPE_VIDEO,
100  .p.id = AV_CODEC_ID_V408,
101  .p.capabilities = AV_CODEC_CAP_DR1,
102  .init = v408_encode_init,
104  .p.pix_fmts = pix_fmt,
105  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
106 };
107 #endif
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:1129
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
v408_encode_init
static av_cold int v408_encode_init(AVCodecContext *avctx)
Definition: v408enc.c:31
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:264
pix_fmt
static enum AVPixelFormat pix_fmt[]
Definition: v408enc.c:80
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:374
encode.h
FFCodec
Definition: codec_internal.h:112
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:346
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:116
FF_CODEC_ENCODE_CB
#define FF_CODEC_ENCODE_CB(func)
Definition: codec_internal.h:263
pkt
AVPacket * pkt
Definition: movenc.c:59
av_cold
#define av_cold
Definition: attributes.h:90
intreadwrite.h
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:399
AVCodecContext::bit_rate
int64_t bit_rate
the average bitrate
Definition: avcodec.h:439
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:116
codec_internal.h
AV_CODEC_ID_AYUV
@ AV_CODEC_ID_AYUV
Definition: codec_id.h:254
AV_CODEC_ID_V408
@ AV_CODEC_ID_V408
Definition: codec_id.h:257
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
AVCodecContext::bits_per_coded_sample
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:1441
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
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: codec_internal.h:31
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:203
AVCodecContext::height
int height
Definition: avcodec.h:562
avcodec.h
ret
ret
Definition: filter_design.txt:187
AVCodecContext
main external API structure.
Definition: avcodec.h:389
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:79
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
v408_encode_frame
static int v408_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: v408enc.c:39
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ff_v408_encoder
const FFCodec ff_v408_encoder
AVPacket
This structure stores compressed data.
Definition: packet.h:351
ff_ayuv_encoder
const FFCodec ff_ayuv_encoder
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:562
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:370