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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/imgutils.h"
33 #include "libavutil/internal.h"
36 {
43 #endif
45  if(!avctx->codec_tag)
47  return 0;
48 }
50 static int raw_encode(AVCodecContext *avctx, AVPacket *pkt,
51  const AVFrame *frame, int *got_packet)
52 {
53  int ret = av_image_get_buffer_size(frame->format,
54  frame->width, frame->height, 1);
56  if (ret < 0)
57  return ret;
59  if ((ret = ff_alloc_packet2(avctx, pkt, ret, ret)) < 0)
60  return ret;
61  if ((ret = av_image_copy_to_buffer(pkt->data, pkt->size,
62  (const uint8_t **)frame->data, frame->linesize,
63  frame->format,
64  frame->width, frame->height, 1)) < 0)
65  return ret;
67  if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
68  frame->format == AV_PIX_FMT_YUYV422) {
69  int x;
70  for(x = 1; x < frame->height*frame->width*2; x += 2)
71  pkt->data[x] ^= 0x80;
72  }
73  pkt->flags |= AV_PKT_FLAG_KEY;
74  *got_packet = 1;
75  return 0;
76 }
79  .name = "rawvideo",
80  .long_name = NULL_IF_CONFIG_SMALL("raw video"),
83  .init = raw_encode_init,
84  .encode2 = raw_encode,
85 };
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2263
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
int av_image_copy_to_buffer(uint8_t *dst, int dst_size, const uint8_t *const src_data[4], const int src_linesize[4], enum AVPixelFormat pix_fmt, int width, int height, int align)
Copy image data from an image into a buffer.
Definition: imgutils.c:383
misc image utilities
const char * desc
Definition: nvenc.c:89
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:2215
static int raw_encode(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: rawenc.c:50
int size
Definition: avcodec.h:1589
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1885
static AVPacket pkt
Definition: avcodec.h:3559
#define av_cold
Definition: attributes.h:82
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:274
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1588
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:3050
static av_cold int raw_encode_init(AVCodecContext *avctx)
Definition: rawenc.c:35
The packet contains a keyframe.
Definition: avcodec.h:1620
int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)
Return the size in bytes of the amount of data required to store an image with the given parameters...
Definition: imgutils.c:361
int width
width and height of the video frame
Definition: frame.h:236
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
const char * name
Name of the codec implementation.
Definition: avcodec.h:3566
AVCodec ff_rawvideo_encoder
Definition: rawenc.c:78
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1594
common internal API header
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:258
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:248
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
main external API structure.
Definition: avcodec.h:1657
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1689
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:63
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:1690
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
Definition: internal.h:80
common internal api header.
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3078
Definition: internal.h:81
int height
Definition: frame.h:236
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1565