FFmpeg
v408enc.c
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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 "libavutil/intreadwrite.h"
24 #include "avcodec.h"
25 #include "encode.h"
26 #include "internal.h"
27 
29 {
30  avctx->bits_per_coded_sample = 32;
31  avctx->bit_rate = ff_guess_coded_bitrate(avctx);
32 
33  return 0;
34 }
35 
37  const AVFrame *pic, int *got_packet)
38 {
39  uint8_t *dst;
40  uint8_t *y, *u, *v, *a;
41  int i, j, ret;
42 
43  ret = ff_get_encode_buffer(avctx, pkt, avctx->width * avctx->height * 4, 0);
44  if (ret < 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  a = pic->data[3];
52 
53  for (i = 0; i < avctx->height; i++) {
54  for (j = 0; j < avctx->width; j++) {
55  if (avctx->codec_id==AV_CODEC_ID_AYUV) {
56  *dst++ = v[j];
57  *dst++ = u[j];
58  *dst++ = y[j];
59  *dst++ = a[j];
60  } else {
61  *dst++ = u[j];
62  *dst++ = y[j];
63  *dst++ = v[j];
64  *dst++ = a[j];
65  }
66  }
67  y += pic->linesize[0];
68  u += pic->linesize[1];
69  v += pic->linesize[2];
70  a += pic->linesize[3];
71  }
72 
74  *got_packet = 1;
75  return 0;
76 }
77 
79 
80 #if CONFIG_AYUV_ENCODER
81 const AVCodec ff_ayuv_encoder = {
82  .name = "ayuv",
83  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"),
84  .type = AVMEDIA_TYPE_VIDEO,
85  .id = AV_CODEC_ID_AYUV,
86  .capabilities = AV_CODEC_CAP_DR1,
87  .init = v408_encode_init,
88  .encode2 = v408_encode_frame,
89  .pix_fmts = pix_fmt,
90  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
91 };
92 #endif
93 #if CONFIG_V408_ENCODER
94 const AVCodec ff_v408_encoder = {
95  .name = "v408",
96  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"),
97  .type = AVMEDIA_TYPE_VIDEO,
98  .id = AV_CODEC_ID_V408,
99  .capabilities = AV_CODEC_CAP_DR1,
100  .init = v408_encode_init,
101  .encode2 = v408_encode_frame,
102  .pix_fmts = pix_fmt,
103  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
104 };
105 #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:1105
AVCodec
AVCodec.
Definition: codec.h:197
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:41
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
v408_encode_init
static av_cold int v408_encode_init(AVCodecContext *avctx)
Definition: v408enc.c:28
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:264
pix_fmt
static enum AVPixelFormat pix_fmt[]
Definition: v408enc.c:78
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:365
encode.h
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:396
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
pkt
AVPacket * pkt
Definition: movenc.c:59
av_cold
#define av_cold
Definition: attributes.h:90
intreadwrite.h
ff_v408_encoder
const AVCodec ff_v408_encoder
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:394
AVCodecContext::bit_rate
int64_t bit_rate
the average bitrate
Definition: avcodec.h:434
ff_ayuv_encoder
const AVCodec ff_ayuv_encoder
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
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
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:371
AVCodecContext::bits_per_coded_sample
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:1407
i
int i
Definition: input.c:407
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:204
AVCodecContext::height
int height
Definition: avcodec.h:557
avcodec.h
ret
ret
Definition: filter_design.txt:187
AVCodecContext
main external API structure.
Definition: avcodec.h:384
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:77
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:36
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPacket
This structure stores compressed data.
Definition: packet.h:342
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:557
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334