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Minor improvements for rescale_needed()

This commit is contained in:
ejurgensen 2015-03-30 23:10:33 +02:00
parent 4850423118
commit e5c8128c9d
1 changed files with 11 additions and 17 deletions
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28
src/artwork.c
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@ -111,27 +111,21 @@ artwork_read(char *path, struct evbuffer *evbuf)
static int static int
rescale_needed(AVCodecContext *src, int max_w, int max_h, int *target_w, int *target_h) rescale_needed(AVCodecContext *src, int max_w, int max_h, int *target_w, int *target_h)
{ {
int need_rescale;
DPRINTF(E_DBG, L_ART, "Original image dimensions: w %d h %d\n", src->width, src->height); DPRINTF(E_DBG, L_ART, "Original image dimensions: w %d h %d\n", src->width, src->height);
need_rescale = 1;
if ((max_w <= 0) || (max_h <= 0)) /* No valid dimensions, use original */
{
need_rescale = 0;
*target_w = src->width; *target_w = src->width;
*target_h = src->height; *target_h = src->height;
}
else if ((src->width <= max_w) && (src->height <= max_h)) /* Smaller than target */
{
need_rescale = 0;
*target_w = src->width; if ((src->width == 0) || (src->height == 0)) /* Unknown source size, can't rescale */
*target_h = src->height; return 0;
}
else if (src->width * max_h > src->height * max_w) /* Wider aspect ratio than target */ if ((max_w <= 0) || (max_h <= 0)) /* No valid target dimensions, use original */
return 0;
if ((src->width <= max_w) && (src->height <= max_h)) /* Smaller than target */
return 0;
if (src->width * max_h > src->height * max_w) /* Wider aspect ratio than target */
{ {
*target_w = max_w; *target_w = max_w;
*target_h = (double)max_w * ((double)src->height / (double)src->width); *target_h = (double)max_w * ((double)src->height / (double)src->width);
@ -155,7 +149,7 @@ rescale_needed(AVCodecContext *src, int max_w, int max_h, int *target_w, int *ta
DPRINTF(E_DBG, L_ART, "Destination width %d height %d\n", *target_w, *target_h); DPRINTF(E_DBG, L_ART, "Destination width %d height %d\n", *target_w, *target_h);
return need_rescale; return 1;
} }
static int static int