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mpv/libvo/vo_yuv4mpeg.c

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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. :-)
*
* 2002/06/19 Klaus Stengel <Klaus.Stengel@asamnet.de>
* - added support for interlaced output
* Activate by using '-vo yuv4mpeg:interlaced'
* or '-vo yuv4mpeg:interlaced_bf' if your source has
* bottom fields first
* - added some additional checks to catch problems
*
* 2002/04/17 Juergen Hammelmann <juergen.hammelmann@gmx.de>
* - added support for output of subtitles
* best, if you give option '-osdlevel 0' to mplayer for
* no watching the seek+timer
*/
#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 "sub.h"
#include "fastmemcpy.h"
#include "../postproc/rgb2rgb.h"
static vo_info_t info =
{
"yuv4mpeg output for mjpegtools (to \"stream.yuv\")",
"yuv4mpeg",
"Robert Kesterson <robertk@robertk.com>",
""
};
LIBVO_EXTERN (yuv4mpeg)
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 uint8_t *rgb_buffer = NULL;
static uint8_t *rgb_line_buffer = NULL;
static int using_format = 0;
static FILE *yuv_out;
static int write_bytes;
#define Y4M_ILACE_NONE 'p' /* non-interlaced, progressive frame */
#define Y4M_ILACE_TOP_FIRST 't' /* interlaced, top-field first */
#define Y4M_ILACE_BOTTOM_FIRST 'b' /* interlaced, bottom-field first */
/* Set progressive mode as default */
static int config_interlace = Y4M_ILACE_NONE;
#define Y4M_IS_INTERLACED (config_interlace != Y4M_ILACE_NONE)
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)
{
image_height = height;
image_width = width;
using_format = format;
if (Y4M_IS_INTERLACED)
{
if (height % 4)
{
perror("yuv4mpeg: Interlaced mode requires image height to be divisable by 4");
return -1;
}
rgb_line_buffer = malloc(image_width * 3);
if (!rgb_line_buffer)
{
perror("yuv4mpeg: Unable to allocate line buffer for interlaced mode");
return -1;
}
if (using_format == IMGFMT_YV12)
printf("yuv4mpeg: WARNING: Input not RGB; Can't seperate chrominance by fields!\n");
}
if (width % 2)
{
perror("yuv4mpeg: Image width must be divisable by 2");
return -1;
}
if(using_format != IMGFMT_YV12)
{
rgb_buffer = malloc(image_width * image_height * 3);
if (!rgb_buffer)
{
perror("yuv4mpeg: Not enough memory to allocate RGB framebuffer");
return -1;
}
}
write_bytes = image_width * image_height * 3 / 2;
image = malloc(write_bytes);
yuv_out = fopen("stream.yuv", "wb");
if (!yuv_out || image == 0)
{
perror("yuv4mpeg: Can't get memory or file handle to write 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).
/* At least the interlacing is ok now */
fprintf(yuv_out, "YUV4MPEG2 W%d H%d F%ld:%ld I%c A0:0\n",
image_width, image_height, (long)(vo_fps * 1000000.0),
(long)1000000, config_interlace);
fflush(yuv_out);
return 0;
}
/* Only use when h divisable by 2! */
static void swap_fields(uint8_t *ptr, const int h, const int stride)
{
int i;
for (i=0; i<h; i +=2)
{
memcpy(rgb_line_buffer , ptr + stride * i , stride);
memcpy(ptr + stride * i , ptr + stride * (i+1), stride);
memcpy(ptr + stride * (i+1), rgb_line_buffer , stride);
}
}
static void draw_alpha(int x0, int y0, int w, int h, unsigned char *src,
unsigned char *srca, int stride) {
switch (using_format)
{
case IMGFMT_YV12:
vo_draw_alpha_yv12(w, h, src, srca, stride,
image + y0 * image_width + x0, image_width);
break;
case IMGFMT_BGR|24:
case IMGFMT_RGB|24:
if (config_interlace != Y4M_ILACE_BOTTOM_FIRST)
vo_draw_alpha_rgb24(w, h, src, srca, stride,
rgb_buffer + (y0 * image_width + x0) * 3, image_width * 3);
else
{
swap_fields (rgb_buffer, image_height, image_width * 3);
vo_draw_alpha_rgb24(w, h, src, srca, stride,
rgb_buffer + (y0 * image_width + x0) * 3, image_width * 3);
swap_fields (rgb_buffer, image_height, image_width * 3);
}
break;
}
}
static void draw_osd(void)
{
vo_draw_text(image_width, image_height, draw_alpha);
}
static void deinterleave_fields(uint8_t *ptr, const int stride,
const int img_height)
{
unsigned int i, j, k_start = 1, modv = img_height - 1;
unsigned char *line_state = malloc(modv);
for (i=0; i<modv; i++)
line_state[i] = 0;
line_state[0] = 1;
while(k_start < modv)
{
i = j = k_start;
memcpy(rgb_line_buffer, ptr + stride * i, stride);
while (!line_state[j])
{
line_state[j] = 1;
i = j;
j = j * 2 % modv;
memcpy(ptr + stride * i, ptr + stride * j, stride);
}
memcpy(ptr + stride * i, rgb_line_buffer, stride);
while(k_start < modv && line_state[k_start])
k_start++;
}
free(line_state);
}
static void vo_y4m_write(const void *ptr, const size_t num_bytes)
{
if (fwrite(ptr, 1, num_bytes, yuv_out) != num_bytes)
perror("yuv4mpeg: Error writing image to output!");
}
static void flip_page (void)
{
uint8_t *upper_y, *upper_u, *upper_v, *rgb_buffer_lower;
int rgb_stride, uv_stride, field_height;
unsigned int i, low_ofs;
fprintf(yuv_out, "FRAME\n");
if (using_format != IMGFMT_YV12)
{
rgb_stride = image_width * 3;
uv_stride = image_width / 2;
if (Y4M_IS_INTERLACED)
{
field_height = image_height / 2;
upper_y = image;
upper_u = upper_y + image_width * field_height;
upper_v = upper_u + image_width * field_height / 4;
low_ofs = image_width * field_height * 3 / 2;
rgb_buffer_lower = rgb_buffer + rgb_stride * field_height;
deinterleave_fields(rgb_buffer, rgb_stride, image_height);
rgb24toyv12(rgb_buffer, upper_y, upper_u, upper_v,
image_width, field_height,
image_width, uv_stride, rgb_stride);
rgb24toyv12(rgb_buffer_lower, upper_y + low_ofs,
upper_u + low_ofs, upper_v + low_ofs,
image_width, field_height,
image_width, uv_stride, rgb_stride);
/* Write Y plane */
for(i = 0; i < field_height; i++)
{
vo_y4m_write(upper_y + image_width * i, image_width);
vo_y4m_write(upper_y + image_width * i + low_ofs, image_width);
}
/* Write U and V plane */
for(i = 0; i < field_height / 2; i++)
{
vo_y4m_write(upper_u + uv_stride * i, uv_stride);
vo_y4m_write(upper_u + uv_stride * i + low_ofs, uv_stride);
}
for(i = 0; i < field_height / 2; i++)
{
vo_y4m_write(upper_v + uv_stride * i, uv_stride);
vo_y4m_write(upper_v + uv_stride * i + low_ofs, uv_stride);
}
return; /* Image written; We have to stop here */
}
rgb24toyv12(rgb_buffer, image_y, image_u, image_v,
image_width, image_height,
image_width, uv_stride, rgb_stride);
}
/* Write progressive frame */
vo_y4m_write(image, write_bytes);
}
static uint32_t draw_slice(uint8_t *srcimg[], int stride[], int w,int h,int x,int y)
{
int i;
uint8_t *dst, *src = srcimg[0];
switch (using_format)
{
case IMGFMT_YV12:
// copy Y:
dst = image_y + image_width * y + x;
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;
}
}
break;
case IMGFMT_BGR24:
case IMGFMT_RGB24:
dst = rgb_buffer + (image_width * y + x) * 3;
for (i = 0; i < h; i++)
{
memcpy(dst, src, w * 3);
src += stride[0];
dst += image_width * 3;
}
break;
}
return 0;
}
static uint32_t draw_frame(uint8_t * src[])
{
switch(using_format)
{
case IMGFMT_YV12:
// gets done in draw_slice
break;
case IMGFMT_BGR24:
case IMGFMT_RGB24:
memcpy(rgb_buffer, src[0], image_width * image_height * 3);
break;
}
return 0;
}
static uint32_t query_format(uint32_t format)
{
if (Y4M_IS_INTERLACED)
{
/* When processing interlaced material we want to get the raw RGB
* data and do the YV12 conversion ourselves to have the chrominance
* information sampled correct. */
switch(format)
{
case IMGFMT_YV12:
return VFCAP_CSP_SUPPORTED|VFCAP_OSD|VFCAP_ACCEPT_STRIDE;
case IMGFMT_BGR|24:
case IMGFMT_RGB|24:
return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW|VFCAP_OSD|VFCAP_ACCEPT_STRIDE;
}
}
else
{
switch(format)
{
case IMGFMT_YV12:
return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW|VFCAP_OSD|VFCAP_ACCEPT_STRIDE;
case IMGFMT_BGR|24:
case IMGFMT_RGB|24:
return VFCAP_CSP_SUPPORTED|VFCAP_OSD|VFCAP_ACCEPT_STRIDE;
}
}
return 0;
}
static void uninit(void)
{
if(image)
free(image);
image = NULL;
if(yuv_out)
fclose(yuv_out);
yuv_out = NULL;
if(rgb_buffer)
free(rgb_buffer);
rgb_buffer = NULL;
if(rgb_line_buffer)
free(rgb_line_buffer);
rgb_line_buffer = NULL;
}
static void check_events(void)
{
}
static uint32_t preinit(const char *arg)
{
int arg_unrecognized = 0;
if(arg)
{
/* configure output mode */
if (strcmp(arg, "interlaced"))
arg_unrecognized++;
else
config_interlace = Y4M_ILACE_TOP_FIRST;
if (strcmp(arg, "interlaced_bf"))
arg_unrecognized++;
else
config_interlace = Y4M_ILACE_BOTTOM_FIRST;
/* If both tests failed the argument is invalid */
if (arg_unrecognized == 2)
{
printf("vo_yuv4mpeg: Unknown subdevice: %s\n", arg);
return ENOSYS;
}
}
/* Inform user which output mode is used */
switch (config_interlace)
{
case Y4M_ILACE_TOP_FIRST:
printf("vo_yuv4mpeg: Interlaced output mode, top-field first\n");
break;
case Y4M_ILACE_BOTTOM_FIRST:
printf("vo_yuv4mpeg: Interlaced output mode, bottom-field first\n");
break;
default:
printf("vo_yuv4mpeg: Using (default) progressive frame mode\n");
break;
}
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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