FFmpeg
v308enc.c
Go to the documentation of this file.
1 /*
2  * v308 encoder
3  *
4  * Copyright (c) 2011 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 "codec_internal.h"
26 #include "encode.h"
27 #include "internal.h"
28 
30 {
31  if (avctx->width & 1) {
32  av_log(avctx, AV_LOG_ERROR, "v308 requires width to be even.\n");
33  return AVERROR_INVALIDDATA;
34  }
35 
36  avctx->bits_per_coded_sample = 24;
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  uint8_t *y, *u, *v;
47  int i, j, ret;
48 
49  ret = ff_get_encode_buffer(avctx, pkt, avctx->width * avctx->height * 3, 0);
50  if (ret < 0)
51  return ret;
52  dst = pkt->data;
53 
54  y = pic->data[0];
55  u = pic->data[1];
56  v = pic->data[2];
57 
58  for (i = 0; i < avctx->height; i++) {
59  for (j = 0; j < avctx->width; j++) {
60  *dst++ = v[j];
61  *dst++ = y[j];
62  *dst++ = u[j];
63  }
64  y += pic->linesize[0];
65  u += pic->linesize[1];
66  v += pic->linesize[2];
67  }
68 
69  *got_packet = 1;
70  return 0;
71 }
72 
74  .p.name = "v308",
75  .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"),
76  .p.type = AVMEDIA_TYPE_VIDEO,
77  .p.id = AV_CODEC_ID_V308,
78  .p.capabilities = AV_CODEC_CAP_DR1,
79  .init = v308_encode_init,
81  .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE },
82  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
83 };
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:1136
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AV_CODEC_ID_V308
@ AV_CODEC_ID_V308
Definition: codec_id.h:256
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:262
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_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
v308_encode_frame
static int v308_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: v308enc.c:42
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:117
codec_internal.h
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:269
ff_v308_encoder
const FFCodec ff_v308_encoder
Definition: v308enc.c:73
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
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPacket
This structure stores compressed data.
Definition: packet.h:351
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
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
v308_encode_init
static av_cold int v308_encode_init(AVCodecContext *avctx)
Definition: v308enc.c:29