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plug-ins: do not needlessly free/malloc() buffer of same size.

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In an animated WebP, chances that layers/frame have the same size is
high. It is uneeded to free then malloc again a buffer at each frame,
unless we need more allocated memory.
This is probably not so significant, but still feels nicer.
This commit is contained in:
Jehan
2019-03-19 12:46:12 +01:00
parent 3dc820c017
commit 0b68ce8182
1 changed files with 15 additions and 6 deletions
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21
plug-ins/file-webp/file-webp-save.c
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@ -481,6 +481,7 @@ save_animation (const gchar *filename,
gboolean status = TRUE;
FILE *outfile = NULL;
guchar *buffer = NULL;
gint buffer_size = 0;
gint w, h;
gint bpp;
gboolean has_alpha;
@ -584,12 +585,20 @@ save_animation (const gchar *filename,
}
/* Attempt to allocate a buffer of the appropriate size */
buffer = g_try_malloc (w * h * bpp);
if (! buffer)
if (! buffer || buffer_size < w * h * bpp)
{
g_printerr ("Buffer error: 'buffer null'\n");
status = FALSE;
break;
buffer = g_try_realloc (buffer, w * h * bpp);
if (! buffer)
{
g_printerr ("Buffer error: 'buffer null'\n");
status = FALSE;
break;
}
else
{
buffer_size = w * h * bpp;
}
}
WebPConfigPreset (&config, params->preset, params->quality);
@ -638,7 +647,6 @@ save_animation (const gchar *filename,
{
status = WebPPictureImportRGBA (&picture, buffer, w * bpp);
}
g_free (buffer);
if (! status)
{
@ -663,6 +671,7 @@ save_animation (const gchar *filename,
gimp_progress_update ((loop + 1.0) / nLayers);
frame_timestamp += (delay <= 0 || force_delay) ? default_delay : delay;
}
g_free (buffer);
if (status == FALSE)
break;