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/*
* vo_yuv4mpeg.c, yuv4mpeg (mjpegtools) interface
*
* Thrown together by
* Robert Kesterson <robertk@robertk.com>
* Based on the pgm output plugin, the rgb2rgb postproc filter, divxdec,
* and probably others.
*
* This is undoubtedly incomplete, inaccurate, or just plain wrong. :-)
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include "config.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "fastmemcpy.h"
#include "../postproc/rgb2rgb.h"
LIBVO_EXTERN (yuv4mpeg)
static vo_info_t vo_info =
{
"yuv4mpeg output for mjpegtools (to \"stream.yuv\")",
"yuv4mpeg",
"Robert Kesterson <robertk@robertk.com>",
""
};
static int image_width;
static int image_height;
static uint8_t *image = NULL;
static uint8_t *image_y = NULL;
static uint8_t *image_u = NULL;
static uint8_t *image_v = NULL;
static int using_format = 0;
static FILE *yuv_out;
int write_bytes;
static uint32_t config(uint32_t width, uint32_t height, uint32_t d_width,
uint32_t d_height, uint32_t fullscreen, char *title,
uint32_t format, const vo_tune_info_t *tuneinfo)
{
image_height = height;
image_width = width;
write_bytes = image_width * image_height * 3 / 2;
using_format = format;
image = malloc(write_bytes);
yuv_out = fopen("stream.yuv", "wb");
if (!yuv_out || image == NULL)
{
perror("Can't get memory or file handle to stream.yuv");
return -1;
}
image_y = image;
image_u = image_y + image_width * image_height;
image_v = image_u + (image_width * image_height) / 4;
// This isn't right.
// But it should work as long as the file isn't interlaced
// or otherwise unusual (the "Ip A0:0" part).
fprintf(yuv_out, "YUV4MPEG2 W%d H%d F%ld:%ld Ip A0:0\n",
image_width, image_height, (long)(vo_fps * 1000000.0), 1000000);
fflush(yuv_out);
return 0;
}
static const vo_info_t* get_info(void)
{
return &vo_info;
}
static void draw_osd(void)
{
}
static void flip_page (void)
{
fprintf(yuv_out, "FRAME\n");
if(fwrite(image, 1, write_bytes, yuv_out) != write_bytes)
perror("Error writing image to output!");
return;
}
static uint32_t draw_slice(uint8_t *srcimg[], int stride[], int w,int h,int x,int y)
{
if(using_format == IMGFMT_YV12)
{
int i;
// copy Y:
uint8_t *dst = image_y + image_width * y + x;
uint8_t *src = srcimg[0];
for (i = 0; i < h; i++)
{
memcpy(dst, src, w);
src += stride[0];
dst += image_width;
}
{
// copy U + V:
int imgstride = image_width >> 1;
uint8_t *src1 = srcimg[1];
uint8_t *src2 = srcimg[2];
uint8_t *dstu = image_u + imgstride * (y >> 1) + (x >> 1);
uint8_t *dstv = image_v + imgstride * (y >> 1) + (x >> 1);
for (i = 0; i < h / 2; i++)
{
memcpy(dstu, src1 , w >> 1);
memcpy(dstv, src2, w >> 1);
src1 += stride[1];
src2 += stride[2];
dstu += imgstride;
dstv += imgstride;
}
}
}
return 0;
}
static uint32_t draw_frame(uint8_t * src[])
{
switch(using_format)
{
case IMGFMT_YV12:
// gets done in draw_slice
break;
case IMGFMT_BGR|24:
{
#ifdef GUESS_THIS_ISNT_NEEDED
int c;
uint8_t temp;
//switch BGR to RGB
for(c = 0; c < image_width * image_height; c++)
{
temp = src[0][c * 3];
src[0][c * 3] = src[0][c * 3 + 2];
src[0][c * 3 + 2] = temp;
}
#endif
}
// intentional fall-through
case IMGFMT_RGB|24:
{
rgb24toyv12(src[0], image_y, image_u, image_v,
image_width, image_height,
image_width, image_width / 2, image_width * 3);
}
break;
}
return 0;
}
static uint32_t query_format(uint32_t format)
{
switch(format){
case IMGFMT_YV12:
case IMGFMT_BGR|24:
case IMGFMT_RGB|24:
return 1;
}
return 0;
}
static void uninit(void)
{
if(image)
free(image);
image = NULL;
if(yuv_out)
fclose(yuv_out);
yuv_out = NULL;
}
static void check_events(void)
{
}
static uint32_t preinit(const char *arg)
{
if(arg)
{
printf("vo_yuv4mpeg: Unknown subdevice: %s\n",arg);
return ENOSYS;
}
return 0;
}
static uint32_t control(uint32_t request, void *data, ...)
{
switch (request) {
case VOCTRL_QUERY_FORMAT:
return query_format(*((uint32_t*)data));
}
return VO_NOTIMPL;
}
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