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Use libswscale in fish vhook. 

Patch by
Victor Paesa <wzrlpy@arsystel.com>
Original thread:
Date: Aug 30, 2006 1:16 AM
Subject: Re: [Ffmpeg-devel] [PATCH] enable libswscale

Originally committed as revision 6128 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Guillaume Poirier 2006-08-30 12:01:22 +00:00
parent a940b428b6
commit 809b6a3138
1 changed files with 43 additions and 4 deletions
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47
vhook/fish.c
View File

@ -45,6 +45,9 @@
#include "framehook.h"
#include "dsputil.h"
#include "avformat.h"
#include "swscale.h"
static int sws_flags = SWS_BICUBIC;
#define SCALEBITS 10
#define ONE_HALF (1 << (SCALEBITS - 1))
@ -88,6 +91,9 @@ typedef struct {
int64_t next_pts;
int inset;
int min_width;
struct SwsContext *toRGB_convert_ctx;
enum PixelFormat sws_pix_fmt; // Sws_Context is opaque, we need to save
int sws_width, sws_height; // this to check if we can re-use contexts
} ContextInfo;
static void dorange(const char *s, int *first, int *second, int maxval)
@ -101,8 +107,13 @@ static void dorange(const char *s, int *first, int *second, int maxval)
void Release(void *ctx)
{
if (ctx)
ContextInfo *ci;
ci = (ContextInfo *) ctx;
if (ctx) {
sws_freeContext(ci->toRGB_convert_ctx);
av_free(ctx);
}
}
int Configure(void **ctxp, int argc, char *argv[])
@ -331,8 +342,37 @@ void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width,
buf = av_malloc(size);
avpicture_fill(&picture1, buf, PIX_FMT_RGB24, width, height);
if (img_convert(&picture1, PIX_FMT_RGB24,
picture, pix_fmt, width, height) >= 0) {
// if we already got a SWS context, let's realloc if is not re-useable
if (ci->toRGB_convert_ctx != NULL) {
if ((ci->sws_pix_fmt != pix_fmt) ||
(ci->sws_width != width) || (ci->sws_height != height)) {
sws_freeContext(ci->toRGB_convert_ctx);
ci->toRGB_convert_ctx = NULL;
}
}
if (ci->toRGB_convert_ctx == NULL) {
ci->sws_pix_fmt = pix_fmt;
ci->sws_width = width;
ci->sws_height = height;
ci->toRGB_convert_ctx = sws_getContext(
ci->sws_width, ci->sws_height,
ci->sws_pix_fmt,
ci->sws_width, ci->sws_height,
PIX_FMT_RGB24,
sws_flags, NULL, NULL, NULL);
if (ci->toRGB_convert_ctx == NULL) {
av_log(NULL, AV_LOG_ERROR,
"Cannot initialize the toRGB conversion context\n");
exit(1);
}
}
// img_convert parameters are 2 first destination, then 4 source
// sws_scale parameters are context, 4 first source, then 2 destination
sws_scale(ci->toRGB_convert_ctx,
picture->data, picture->linesize, 0, ci->sws_height,
picture1.data, picture1.linesize);
/* Write out the PPM file */
FILE *f;
@ -345,7 +385,6 @@ void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width,
fwrite(buf, width * height * 3, 1, f);
fclose(f);
}
}
av_free(buf);
ci->next_pts = pts + ci->min_interval;