PyObject* _anim_encoder_dealloc(PyObject* self) { WebPAnimEncoderObject* encp = (WebPAnimEncoderObject*)self; WebPPictureFree(&(encp->frame)); WebPAnimEncoderDelete(encp->enc); Py_RETURN_NONE; }
WebPAnimEncoder* WebPAnimEncoderNewInternal( int width, int height, const WebPAnimEncoderOptions* enc_options, int abi_version) { WebPAnimEncoder* enc; if (WEBP_ABI_IS_INCOMPATIBLE(abi_version, WEBP_MUX_ABI_VERSION)) { return NULL; } if (width <= 0 || height <= 0 || (width * (uint64_t)height) >= MAX_IMAGE_AREA) { return NULL; } enc = (WebPAnimEncoder*)WebPSafeCalloc(1, sizeof(*enc)); if (enc == NULL) return NULL; // sanity inits, so we can call WebPAnimEncoderDelete(): enc->encoded_frames_ = NULL; enc->mux_ = NULL; // Dimensions and options. *(int*)&enc->canvas_width_ = width; *(int*)&enc->canvas_height_ = height; if (enc_options != NULL) { *(WebPAnimEncoderOptions*)&enc->options_ = *enc_options; SanitizeEncoderOptions((WebPAnimEncoderOptions*)&enc->options_); } else { DefaultEncoderOptions((WebPAnimEncoderOptions*)&enc->options_); } // Canvas buffers. if (!WebPPictureInit(&enc->curr_canvas_copy_) || !WebPPictureInit(&enc->prev_canvas_) || !WebPPictureInit(&enc->prev_canvas_disposed_)) { return NULL; } enc->curr_canvas_copy_.width = width; enc->curr_canvas_copy_.height = height; enc->curr_canvas_copy_.use_argb = 1; if (!WebPPictureAlloc(&enc->curr_canvas_copy_) || !WebPPictureCopy(&enc->curr_canvas_copy_, &enc->prev_canvas_) || !WebPPictureCopy(&enc->curr_canvas_copy_, &enc->prev_canvas_disposed_)) { goto Err; } WebPUtilClearPic(&enc->prev_canvas_, NULL); enc->curr_canvas_copy_modified_ = 1; // Encoded frames. ResetCounters(enc); // Note: one extra storage is for the previous frame. enc->size_ = enc->options_.kmax - enc->options_.kmin + 1; // We need space for at least 2 frames. But when kmin, kmax are both zero, // enc->size_ will be 1. So we handle that special case below. if (enc->size_ < 2) enc->size_ = 2; enc->encoded_frames_ = (EncodedFrame*)WebPSafeCalloc(enc->size_, sizeof(*enc->encoded_frames_)); if (enc->encoded_frames_ == NULL) goto Err; enc->mux_ = WebPMuxNew(); if (enc->mux_ == NULL) goto Err; enc->count_since_key_frame_ = 0; enc->first_timestamp_ = 0; enc->prev_timestamp_ = 0; enc->prev_candidate_undecided_ = 0; enc->is_first_frame_ = 1; enc->got_null_frame_ = 0; return enc; // All OK. Err: WebPAnimEncoderDelete(enc); return NULL; }
/* Save an animation to disk */ gboolean save_animation(gint32 nLayers, gint32 *allLayers, FILE *outfile, WebPSaveParams *params, GError **error) { gboolean status = FALSE; gboolean innerStatus = TRUE; WebPAnimEncoderOptions enc_options; WebPAnimEncoder *enc = NULL; int frame_timestamp = 0; WebPData webp_data = {0}; WebPMux *mux; WebPMuxAnimParams anim_params = {0}; /* Prepare for encoding an animation */ WebPAnimEncoderOptionsInit(&enc_options); do { int i; gint32 drawable_ID = allLayers[0]; /* Create the encoder */ enc = WebPAnimEncoderNew(gimp_drawable_width(drawable_ID), gimp_drawable_height(drawable_ID), &enc_options); /* Encode each layer */ for (i = 0; i < nLayers; i++) { if ((innerStatus = save_layer(allLayers[i], NULL, NULL, TRUE, enc, frame_timestamp, params, error)) == FALSE) { break; } } /* Check to make sure each layer was encoded correctly */ if (innerStatus == FALSE) { break; } /* Add NULL frame */ WebPAnimEncoderAdd(enc, NULL, frame_timestamp, NULL); /* Initialize the WebP image structure */ WebPDataInit(&webp_data); /* Write the animation to the image */ if (!WebPAnimEncoderAssemble(enc, &webp_data)) { g_set_error(error, G_FILE_ERROR, 0, "Encoding error: '%s'", WebPAnimEncoderGetError(enc)); break; } /* Create a Mux */ mux = WebPMuxCreate(&webp_data, 1); /* Set animation parameters */ anim_params.loop_count = params->loop == TRUE ? 0 : 1; WebPMuxSetAnimationParams(mux, &anim_params); /* Assemble the image */ WebPMuxAssemble(mux, &webp_data); /* Write to disk */ if (fwrite(webp_data.bytes, webp_data.size, 1, outfile) != 1) { break; } /* Everything succeeded */ status = TRUE; } while(0); /* Free image data */ WebPDataClear(&webp_data); /* Free the animation encoder */ if (enc) { WebPAnimEncoderDelete(enc); } return status; }