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WebPEncode: clear stats at the start of encode

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also relocate user_data from WebPAuxStats to the WebPPicture struct to
make clearing easier while placing it closer to the progress hook with
which it's used.
prior to this change some spurious lossless data could be reported in
the lossy (sans alpha) encoding case. additionally user_data could be
lost during lossless encoding.

Change-Id: I929fae3dfde4d445ff81bbaad51445ea586dd80b
This commit is contained in:
James Zern 2012-07-27 19:53:16 -07:00
parent a7cc729126
commit 475d87d767
3 changed files with 7 additions and 5 deletions
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4
examples/cwebp.c
View File

@ -779,7 +779,7 @@ static int DumpPicture(const WebPPicture* const picture, const char* PGM_name) {
static int ProgressReport(int percent, const WebPPicture* const picture) {
printf("[%s]: %3d %% \r",
(char*)picture->stats->user_data, percent);
(char*)picture->user_data, percent);
fflush(stdout);
return 1; // all ok
}
@ -1125,7 +1125,7 @@ int main(int argc, const char *argv[]) {
}
if (!quiet) {
picture.stats = &stats;
stats.user_data = (void*)in_file;
picture.user_data = (void*)in_file;
}
// Compress

2
src/enc/webpenc.c
View File

@ -344,6 +344,8 @@ int WebPEncode(const WebPConfig* config, WebPPicture* pic) {
if (pic->width > WEBP_MAX_DIMENSION || pic->height > WEBP_MAX_DIMENSION)
return WebPEncodingSetError(pic, VP8_ENC_ERROR_BAD_DIMENSION);
if (pic->stats != NULL) memset(pic->stats, 0, sizeof(*pic->stats));
if (!config->lossless) {
VP8Encoder* enc = NULL;
if (pic->y == NULL || pic->u == NULL || pic->v == NULL) {

6
src/webp/encode.h
View File

@ -170,9 +170,6 @@ typedef struct {
int alpha_data_size; // size of the transparency data
int layer_data_size; // size of the enhancement layer data
void* user_data; // this field is free to be set to any value and
// used during callbacks (like progress-report e.g.).
// lossless encoder statistics
uint32_t lossless_features; // bit0:predictor bit1:cross-color transform
// bit2:subtract-green bit3:color indexing
@ -299,6 +296,9 @@ struct WebPPicture {
// If not NULL, report progress during encoding.
WebPProgressHook progress_hook;
void* user_data; // this field is free to be set to any value and
// used during callbacks (like progress-report e.g.).
uint32_t pad3[3]; // padding for later use
// Unused for now: original samples (for non-YUV420 modes)