Permalink
Browse files

Add missing files after 60cf735 .

  • Loading branch information...
stichnot committed Jul 28, 2012
1 parent 60cf735 commit 262c7c7ab640a3f1af515c45b4040723ec76e6a6
Showing with 161 additions and 0 deletions.
  1. +153 −0 mythtv/filters/vflip/filter_vflip.c
  2. +8 −0 mythtv/filters/vflip/vflip.pro
@@ -0,0 +1,153 @@
/*
* filter_vflip
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "filter.h"
#include "frame.h"
typedef struct ThisFilter
{
VideoFilter vf;
TF_STRUCT;
} ThisFilter;
static void reverse_memcpy(unsigned char *dst, const unsigned char *src, int n)
{
int i;
for (i = 0; i < n; ++i)
dst[n - 1 - i] = src[i];
}
static int swap(VideoFrame *frame, int datasize, int offset, int shift)
{
int i, j;
int oldoffset;
int newoffset;
unsigned char *temp = malloc(datasize);
if (temp == NULL)
{
fprintf(stderr, "Couldn't allocate memory for temp\n");
return 0;
}
for (i = 0, j = (frame->height - 1); i < frame->height / 2; i++, j--)
{
newoffset = i * datasize + offset;
if (shift)
newoffset += datasize;
oldoffset = j * datasize + offset;
if (!shift || i != frame->height - 1)
{
memcpy(temp, frame->buf + newoffset,
datasize); // new -> temp
reverse_memcpy(frame->buf + newoffset, frame->buf + oldoffset,
datasize); // old -> new
reverse_memcpy(frame->buf + oldoffset, temp,
datasize); // temp -> old
}
}
if (temp)
free(temp);
return 1;
}
static int comp(const void *va, const void *vb)
{
int *a = (int *) va;
int *b = (int *) vb;
if (*a == *b)
return 0;
else if (*a < *b)
return -1;
else
return 1;
}
static int vflip(VideoFilter *vf, VideoFrame *frame, int field)
{
(void)field;
if (frame->codec != FMT_YV12)
{
fprintf(stderr, "codec %d unsupported for vflip, skipping\n",
frame->codec);
return 0;
}
TF_VARS;
(void)vf;
TF_START;
int ouroffsets[3];
memcpy(ouroffsets, frame->offsets, 3 * sizeof(int));
qsort(ouroffsets, 3, sizeof(int), comp);
int datasize;
datasize = (ouroffsets[1] - ouroffsets[0]) / frame->height;
if (!swap(frame, datasize, ouroffsets[0], 0))
return 0;
datasize = (ouroffsets[2] - ouroffsets[1]) / frame->height;
if (!swap(frame, datasize, ouroffsets[1], 0))
return 0;
datasize = (frame->size - ouroffsets[2]) / frame->height;
if (!swap(frame, datasize, ouroffsets[2], 0))
return 0;
TF_END((ThisFilter *)vf, "VFlip");
return 1;
}
static VideoFilter *new_filter(VideoFrameType inpixfmt,
VideoFrameType outpixfmt,
int *width, int *height, char *options,
int threads)
{
ThisFilter *filter;
(void)width;
(void)height;
(void)options;
(void)threads;
if ((inpixfmt != outpixfmt) ||
(inpixfmt != FMT_YV12 && inpixfmt != FMT_RGB24 &&
inpixfmt != FMT_YUV422P) )
return NULL;
filter = malloc(sizeof(ThisFilter));
if (filter == NULL)
{
fprintf(stderr, "Couldn't allocate memory for filter\n");
return NULL;
}
filter->vf.filter = &vflip;
filter->vf.cleanup = NULL;
TF_INIT(filter)
return (VideoFilter *) filter;
}
static FmtConv FmtList[] =
{
{ FMT_YV12, FMT_YV12 },
FMT_NULL
};
const FilterInfo filter_table[] =
{
{
filter_init: &new_filter,
name: "vflip",
descript: "flips the video image vertically",
formats: FmtList,
libname: NULL
},
FILT_NULL
};
@@ -0,0 +1,8 @@
include ( ../filter-common.pro )
include ( ../filter-avcodec.pro )
INCLUDEPATH += ../../libs/libmythtv \
../../libs/libavcodec \
../..
# Input
SOURCES += filter_vflip.c

0 comments on commit 262c7c7

Please sign in to comment.