generic-library/webp
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

cache_bits passed to EncodeImageInternal()

Browse Source 
should be 0 when not using color cache.

Change-Id: Id15c9b6bfbeb7c69a0189fa4c411df2763f9dead
This commit is contained in:
Urvang Joshi 2012-04-23 12:15:39 +00:00 committed by James Zern
parent e38b40a996
commit 0e6fa06595
1 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/enc/vp8l.c
View File

@ -1113,8 +1113,7 @@ static WebPEncodingError ApplyPalette(VP8LBitWriter* const bw,
int VP8LEncodeImage(const WebPConfig* const config,
WebPPicture* const picture) {
int ok = 0;
int use_color_cache = 1;
int cache_bits = 7;
int cache_bits = 7; // If equal to 0, don't use color cache.
int width, height, quality;
VP8LEncoder* enc = NULL;
WebPEncodingError err = VP8_ENC_OK;
@ -1152,7 +1151,7 @@ int VP8LEncodeImage(const WebPConfig* const config,
if (enc->use_palette_) {
err = ApplyPalette(&bw, enc, width, height, quality);
if (err != VP8_ENC_OK) goto Error;
use_color_cache = 0;
cache_bits = 0; // Don't use color cache.
}
// In case image is not packed.
@ -1187,18 +1186,23 @@ int VP8LEncodeImage(const WebPConfig* const config,
}
}
if (use_color_cache) {
VP8LWriteBits(&bw, 1, 0); // No more transforms.
// ---------------------------------------------------------------------------
// Estimate the color cache size.
if (cache_bits > 0) {
if (quality > 25) {
if (!VP8LCalculateEstimateForPaletteSize(enc->argb_, enc->current_width_,
height, &cache_bits)) {
err = VP8_ENC_ERROR_INVALID_CONFIGURATION;
goto Error;
}
} else {
cache_bits = 0; // Don't use color cache.
}
}
VP8LWriteBits(&bw, 1, 0); // No more transforms.
// ---------------------------------------------------------------------------
// Encode and write the transformed image.