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1 /*
2  * Raw Video Encoder
3  * Copyright (c) 2001 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
22 /**
23  * @file
24  * Raw Video Encoder
25  */
27 #include "avcodec.h"
28 #include "raw.h"
29 #include "internal.h"
30 #include "libavutil/pixdesc.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/internal.h"
35 {
36  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
42 #endif
44  if(!avctx->codec_tag)
46  return 0;
47 }
49 static int raw_encode(AVCodecContext *avctx, AVPacket *pkt,
50  const AVFrame *frame, int *got_packet)
51 {
52  int ret = avpicture_get_size(frame->format, frame->width, frame->height);
54  if (ret < 0)
55  return ret;
57  if ((ret = ff_alloc_packet2(avctx, pkt, ret, ret)) < 0)
58  return ret;
59  if ((ret = avpicture_layout((const AVPicture *)frame, frame->format, frame->width,
60  frame->height, pkt->data, pkt->size)) < 0)
61  return ret;
63  if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
64  frame->format == AV_PIX_FMT_YUYV422) {
65  int x;
66  for(x = 1; x < frame->height*frame->width*2; x += 2)
67  pkt->data[x] ^= 0x80;
68  }
69  pkt->flags |= AV_PKT_FLAG_KEY;
70  *got_packet = 1;
71  return 0;
72 }
75  .name = "rawvideo",
76  .long_name = NULL_IF_CONFIG_SMALL("raw video"),
79  .init = raw_encode_init,
80  .encode2 = raw_encode,
81 };
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2129
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
Definition: pixdesc.c:2081
static int raw_encode(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: rawenc.c:49
int size
Definition: avcodec.h:1424
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1722
int avpicture_layout(const AVPicture *src, enum AVPixelFormat pix_fmt, int width, int height, unsigned char *dest, int dest_size)
Copy pixel data from an AVPicture into a buffer.
Definition: avpicture.c:41
static AVPacket pkt
Picture data structure.
Definition: avcodec.h:3744
Definition: avcodec.h:3472
#define av_cold
Definition: attributes.h:74
unsigned int avcodec_pix_fmt_to_codec_tag(enum AVPixelFormat pix_fmt)
Return a value representing the fourCC code associated to the pixel format pix_fmt, or 0 if no associated fourCC code can be found.
Definition: raw.c:232
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1423
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:2996
static av_cold int raw_encode_init(AVCodecContext *avctx)
Definition: rawenc.c:34
The packet contains a keyframe.
Definition: avcodec.h:1469
int width
width and height of the video frame
Definition: frame.h:220
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
const char * name
Name of the codec implementation.
Definition: avcodec.h:3479
Libavcodec external API header.
AVCodec ff_rawvideo_encoder
Definition: rawenc.c:74
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1429
common internal API header
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:242
Raw Video Codec.
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:232
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
main external API structure.
Definition: avcodec.h:1502
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1534
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:64
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: utils.c:1782
Definition: internal.h:79
common internal api header.
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3024
Definition: internal.h:80
int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height)
Calculate the size in bytes that a picture of the given width and height would occupy if stored in th...
Definition: avpicture.c:49
int height
Definition: frame.h:220
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1400