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 "internal.h"
26 
28 {
29  avctx->bits_per_coded_sample = 32;
30  avctx->bit_rate = ff_guess_coded_bitrate(avctx);
31 
32  return 0;
33 }
34 
36  const AVFrame *pic, int *got_packet)
37 {
38  uint8_t *dst;
39  uint8_t *y, *u, *v, *a;
40  int i, j, ret;
41 
42  if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4, 0)) < 0)
43  return ret;
44  dst = pkt->data;
45 
46  y = pic->data[0];
47  u = pic->data[1];
48  v = pic->data[2];
49  a = pic->data[3];
50 
51  for (i = 0; i < avctx->height; i++) {
52  for (j = 0; j < avctx->width; j++) {
53  if (avctx->codec_id==AV_CODEC_ID_AYUV) {
54  *dst++ = v[j];
55  *dst++ = u[j];
56  *dst++ = y[j];
57  *dst++ = a[j];
58  } else {
59  *dst++ = u[j];
60  *dst++ = y[j];
61  *dst++ = v[j];
62  *dst++ = a[j];
63  }
64  }
65  y += pic->linesize[0];
66  u += pic->linesize[1];
67  v += pic->linesize[2];
68  a += pic->linesize[3];
69  }
70 
72  *got_packet = 1;
73  return 0;
74 }
75 
77 {
78  return 0;
79 }
80 
81 #if CONFIG_AYUV_ENCODER
83  .name = "ayuv",
84  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"),
85  .type = AVMEDIA_TYPE_VIDEO,
86  .id = AV_CODEC_ID_AYUV,
87  .init = v408_encode_init,
88  .encode2 = v408_encode_frame,
89  .close = v408_encode_close,
90  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE },
91  .capabilities = AV_CODEC_CAP_INTRA_ONLY,
92 };
93 #endif
94 #if CONFIG_V408_ENCODER
96  .name = "v408",
97  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"),
98  .type = AVMEDIA_TYPE_VIDEO,
99  .id = AV_CODEC_ID_V408,
100  .init = v408_encode_init,
101  .encode2 = v408_encode_frame,
102  .close = v408_encode_close,
103  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE },
104  .capabilities = AV_CODEC_CAP_INTRA_ONLY,
105 };
106 #endif
AV_CODEC_CAP_INTRA_ONLY
#define AV_CODEC_CAP_INTRA_ONLY
Codec is intra only.
Definition: avcodec.h:1067
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:2255
AVCodec
AVCodec.
Definition: avcodec.h:3481
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
v408_encode_init
static av_cold int v408_encode_init(AVCodecContext *avctx)
Definition: v408enc.c:27
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:252
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
internal.h
AVPacket::data
uint8_t * data
Definition: avcodec.h:1477
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1509
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
av_cold
#define av_cold
Definition: attributes.h:84
intreadwrite.h
ff_ayuv_encoder
AVCodec ff_ayuv_encoder
ff_v408_encoder
AVCodec ff_v408_encoder
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:1575
AVCodecContext::bit_rate
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1615
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:188
AV_CODEC_ID_AYUV
@ AV_CODEC_ID_AYUV
Definition: avcodec.h:418
AV_CODEC_ID_V408
@ AV_CODEC_ID_V408
Definition: avcodec.h:421
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:177
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1483
AVCodecContext::bits_per_coded_sample
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:2789
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
uint8_t
uint8_t
Definition: audio_convert.c:194
AVCodec::name
const char * name
Name of the codec implementation.
Definition: avcodec.h:3488
AVCodecContext::height
int height
Definition: avcodec.h:1738
avcodec.h
ret
ret
Definition: filter_design.txt:187
v408_encode_close
static av_cold int v408_encode_close(AVCodecContext *avctx)
Definition: v408enc.c:76
AVCodecContext
main external API structure.
Definition: avcodec.h:1565
pkt
static AVPacket pkt
Definition: demuxing_decoding.c:54
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:35
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPacket
This structure stores compressed data.
Definition: avcodec.h:1454
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:1738
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
ff_alloc_packet2
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