img2webp: treat -loop as a no-op w/single images
or in cases where duplicates have been reduced to one Change-Id: I145cd61b6792b021617f1234f0ba36e2a3128d84
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b045013970
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0d8e05880c
@ -85,10 +85,15 @@ static int ReadImage(const char filename[], WebPPicture* const pic) {
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static int SetLoopCount(int loop_count, WebPData* const webp_data) {
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int ok = 1;
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WebPMuxError err;
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uint32_t features;
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WebPMuxAnimParams new_params;
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WebPMux* const mux = WebPMuxCreate(webp_data, 1);
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if (mux == NULL) return 0;
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err = WebPMuxGetFeatures(mux, &features);
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ok = (err == WEBP_MUX_OK);
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if (!ok || !(features & ANIMATION_FLAG)) goto End;
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err = WebPMuxGetAnimationParams(mux, &new_params);
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ok = (err == WEBP_MUX_OK);
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if (ok) {
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@ -101,6 +106,8 @@ static int SetLoopCount(int loop_count, WebPData* const webp_data) {
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err = WebPMuxAssemble(mux, webp_data);
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ok = (err == WEBP_MUX_OK);
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}
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End:
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WebPMuxDelete(mux);
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if (!ok) {
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fprintf(stderr, "Error during loop-count setting\n");
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