/* * Copyright (C) 2016 The Android Open Source Project * Copyright (C) 2016 Mopria Alliance, Inc. * Copyright (C) 2013 Hewlett-Packard Development Company, L.P. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include #include "wprint_image.h" #include "lib_wprint.h" #define TAG "wprint_image" #define MIN_DECODE_MEM (1 * 1024 * 1024) #define MAX_DECODE_MEM (4 * 1024 * 1024) void wprint_image_setup(wprint_image_info_t *image_info, const char *mime_type, const ifc_wprint_t *wprint_ifc, unsigned int output_resolution, int pdf_render_resolution) { if (image_info != NULL) { LOGD("image_setup"); memset(image_info, 0, sizeof(wprint_image_info_t)); image_info->wprint_ifc = wprint_ifc; image_info->mime_type = mime_type; image_info->print_resolution = output_resolution; image_info->pdf_render_resolution = pdf_render_resolution; } } status_t wprint_image_get_info(FILE *imgfile, wprint_image_info_t *image_info) { if (image_info == NULL) return ERROR; image_info->imgfile = imgfile; image_info->rotation = ROT_0; image_info->swath_start = -1; image_info->rows_cached = 0; image_info->output_cache = NULL; image_info->output_swath_start = -1; image_info->scaled_sample_size = 1; image_info->stripe_height = 0; image_info->unscaled_rows = NULL; image_info->unscaled_rows_needed = 0; image_info->mixed_memory = NULL; image_info->mixed_memory_needed = 0; image_info->scaled_width = -1; image_info->scaled_height = -1; image_info->unscaled_start_row = -1; image_info->unscaled_end_row = -1; image_info->scaling_needed = FALSE; image_info->output_padding_top = 0; image_info->output_padding_left = 0; image_info->output_padding_right = 0; image_info->output_padding_bottom = 0; const image_decode_ifc_t *decode_ifc = image_info->decode_ifc; if ((decode_ifc != NULL) && (decode_ifc->get_hdr != NULL)) { if (OK == decode_ifc->get_hdr(image_info)) { LOGI("wprint_image_get_info(): %s dim = %dx%d", image_info->mime_type, image_info->width, image_info->height); return OK; } else { LOGE("ERROR: get_hdr for %s", image_info->mime_type); return ERROR; } } LOGE("Unsupported image type: %s", image_info->mime_type); return ERROR; } status_t wprint_image_set_output_properties(wprint_image_info_t *image_info, wprint_rotation_t rotation, unsigned int printable_width, unsigned int printable_height, unsigned int top_margin, unsigned int left_margin, unsigned int right_margin, unsigned int bottom_margin, unsigned int render_flags, unsigned int max_decode_stripe, unsigned int concurrent_stripes, unsigned int padding_options) { // validate rotation switch (rotation) { default: rotation = ROT_0; case ROT_0: case ROT_90: case ROT_180: case ROT_270: break; } // rotate margins switch (rotation) { case ROT_90: case ROT_270: { unsigned int temp; temp = top_margin; top_margin = left_margin; left_margin = bottom_margin; bottom_margin = right_margin; right_margin = temp; break; } default: break; } unsigned int input_render_flags = render_flags; // store padding options image_info->padding_options = (padding_options & PAD_ALL); // store margin adjusted printable area image_info->printable_width = printable_width - (left_margin + right_margin); image_info->printable_height = printable_height - (top_margin + bottom_margin); // store rendering parameters image_info->render_flags = render_flags; image_info->output_rows = max_decode_stripe; image_info->stripe_height = max_decode_stripe; image_info->concurrent_stripes = concurrent_stripes; // free data just in case if (image_info->unscaled_rows != NULL) { free(image_info->unscaled_rows); } // free data just in case if (image_info->mixed_memory != NULL) { free(image_info->mixed_memory); } image_info->row_offset = 0; image_info->col_offset = 0; image_info->scaled_sample_size = 1; image_info->scaled_width = -1; image_info->scaled_height = -1; image_info->unscaled_start_row = -1; image_info->unscaled_end_row = -1; image_info->unscaled_rows = NULL; image_info->unscaled_rows_needed = 0; image_info->mixed_memory = NULL; image_info->mixed_memory_needed = 0; image_info->rotation = rotation; unsigned int image_output_width; unsigned int image_output_height; // save margins switch (image_info->rotation) { case ROT_180: case ROT_270: image_info->output_padding_top = bottom_margin; image_info->output_padding_left = right_margin; image_info->output_padding_right = left_margin; image_info->output_padding_bottom = top_margin; break; case ROT_0: case ROT_90: default: image_info->output_padding_top = top_margin; image_info->output_padding_left = left_margin; image_info->output_padding_right = right_margin; image_info->output_padding_bottom = bottom_margin; break; } // swap dimensions switch (image_info->rotation) { case ROT_90: case ROT_270: image_output_width = image_info->height; image_output_height = image_info->width; break; case ROT_0: case ROT_180: default: image_output_width = image_info->width; image_output_height = image_info->height; break; } int native_units = 0; const image_decode_ifc_t *decode_ifc = image_info->decode_ifc; if ((image_info->render_flags & RENDER_FLAG_AUTO_FIT) && (decode_ifc != NULL) && (decode_ifc->native_units != NULL)) { native_units = decode_ifc->native_units(image_info); } if (native_units <= 0) { native_units = image_info->print_resolution; } float native_scaling = 1.0f; unsigned int native_image_output_width = image_output_width; unsigned int native_image_output_height = image_output_height; if ((native_units != image_info->print_resolution) && !((image_info->render_flags & RENDER_FLAG_AUTO_SCALE) || ((image_info->render_flags & RENDER_FLAG_AUTO_FIT) && !(image_info->render_flags & RENDER_FLAG_DOCUMENT_SCALING)))) { native_scaling = (image_info->print_resolution * 1.0f) / (native_units * 1.0f); native_image_output_width = (int) floorf(image_output_width * native_scaling); native_image_output_height = (int) floorf(image_output_height * native_scaling); LOGD("need to do native scaling by %f factor to size %dx%d", native_scaling, native_image_output_width, native_image_output_height); } // if we have to scale determine if we can use subsampling to scale down if ((image_info->render_flags & (RENDER_FLAG_AUTO_SCALE | RENDER_FLAG_AUTO_FIT)) && (native_scaling == 1.0f)) { LOGD("calculating subsampling"); /* * Find a subsampling scale factor that produces an image that is still bigger * than the printable area and then finish scaling later using the fine-scaler. * This produces better quality than subsampling to a smaller size and scaling up. */ image_info->scaled_sample_size = 1; if ((decode_ifc != NULL) && (decode_ifc->supports_subsampling(image_info) == OK)) { // subsampling supported int next_width, next_height; next_width = image_output_width >> 1; next_height = image_output_height >> 1; while (((image_info->render_flags & RENDER_FLAG_AUTO_SCALE) && (next_width > image_info->printable_width) && (next_height > image_info->printable_height)) || ((image_info->render_flags & RENDER_FLAG_AUTO_FIT) && ((next_width > image_info->printable_width) || (next_height > image_info->printable_height)))) { image_info->scaled_sample_size <<= 1; next_width >>= 1; next_height >>= 1; } } LOGD("calculated sample size: %d", image_info->scaled_sample_size); // are we dong any subsampling? if (image_info->scaled_sample_size > 1) { // force the decoder to close and reopen with the new sample size setting decode_ifc->cleanup(image_info); decode_ifc->get_hdr(image_info); // update the output size image_output_width /= image_info->scaled_sample_size; image_output_height /= image_info->scaled_sample_size; } /* * have we reached our target size with subsampling? * if so disable further scaling */ // check if width matches and height meets criteria if ((image_output_width == image_info->printable_width) && (((image_info->render_flags & RENDER_FLAG_AUTO_SCALE) && (image_output_height >= image_info->printable_height)) || ((image_info->render_flags & RENDER_FLAG_AUTO_FIT) && (image_output_height < image_info->printable_height)))) { LOGD("disabling fine scaling since width matches and height meets criteria"); image_info->render_flags &= ~(RENDER_FLAG_AUTO_SCALE | RENDER_FLAG_AUTO_FIT); } else if ((image_output_height == image_info->printable_height) && (((image_info->render_flags & RENDER_FLAG_AUTO_SCALE) && (image_output_width >= image_info->printable_width)) || ((image_info->render_flags & RENDER_FLAG_AUTO_FIT) && (image_output_width < image_info->printable_width)))) { // height matches and width meets criteria LOGD("disabling fine scaling since height matches and width meets criteria"); image_info->render_flags &= ~(RENDER_FLAG_AUTO_SCALE | RENDER_FLAG_AUTO_FIT); } if ((image_info->render_flags & RENDER_FLAG_DOCUMENT_SCALING) && (image_output_height <= image_info->printable_height) && (image_output_width <= image_info->printable_width)) { image_info->render_flags &= ~(RENDER_FLAG_AUTO_SCALE | RENDER_FLAG_AUTO_FIT); } } else if ((native_scaling != 1.0f) && (image_info->render_flags & RENDER_FLAG_DOCUMENT_SCALING)) { LOGD("checking native document scaling factor"); if ((native_image_output_height <= image_info->printable_height) && (native_image_output_width <= image_output_width <= image_info->printable_width)) { LOGD("fit in printable area, just scale to native units"); image_info->render_flags &= ~(RENDER_FLAG_AUTO_SCALE | RENDER_FLAG_AUTO_FIT); } else { LOGD("we don't fit in printable area, continue with fit-to-page"); native_scaling = 1.0f; } } // store the subsampled dimensions image_info->sampled_width = (image_info->width / image_info->scaled_sample_size); image_info->sampled_height = (image_info->height / image_info->scaled_sample_size); // do we have any additional scaling to do? if ((image_info->render_flags & (RENDER_FLAG_AUTO_SCALE | RENDER_FLAG_AUTO_FIT)) || (native_scaling != 1.0f)) { LOGD("calculating fine-scaling"); int i; float targetHeight, targetWidth; float sourceHeight, sourceWidth; float rw; int useHeight; sourceWidth = image_output_width * 1.0f; sourceHeight = image_output_height * 1.0f; if (image_info->render_flags & (RENDER_FLAG_AUTO_SCALE | RENDER_FLAG_AUTO_FIT)) { targetHeight = image_info->printable_height * 1.0f; targetWidth = image_info->printable_width * 1.0f; // determine what our bounding edge is rw = (targetHeight * sourceWidth) / sourceHeight; if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { useHeight = (rw >= targetWidth); } else { useHeight = (rw < targetWidth); } // determine the scaling factor if (useHeight) { image_info->scaled_width = (int) floorf(rw); image_info->scaled_height = (int) floorf(targetHeight); } else { image_info->scaled_height = (int) floorf(targetWidth * sourceHeight / sourceWidth); image_info->scaled_width = (int) floorf(targetWidth); } } else { image_info->scaled_height = native_image_output_height; image_info->scaled_width = native_image_output_width; } image_info->scaling_needed = TRUE; /* * setup the fine-scaler * we use rotated image_output_width rather than the pre-rotated sampled_width */ scaler_make_image_scaler_tables(image_output_width, BYTES_PER_PIXEL(image_output_width), image_info->scaled_width, BYTES_PER_PIXEL(image_info->scaled_width), image_output_height, image_info->scaled_height, &image_info->scaler_config); image_info->unscaled_rows_needed = 0; image_info->mixed_memory_needed = 0; // calculate memory requirements for (i = 0; i < image_info->printable_height; i += max_decode_stripe) { uint16 row; uint16 row_start, row_end, gen_rows, row_offset; uint32 mixed; row = i; if (row >= image_info->scaled_height) { break; } scaler_calculate_scaling_rows(row, MIN((row + (max_decode_stripe - 1)), (image_info->scaled_height - 1)), (void *) &image_info->scaler_config, &row_start, &row_end, &gen_rows, &row_offset, &mixed); image_info->output_rows = MAX(image_info->output_rows, gen_rows); image_info->unscaled_rows_needed = MAX(image_info->unscaled_rows_needed, ((row_end - row_start) + 3)); image_info->mixed_memory_needed = MAX(image_info->mixed_memory_needed, mixed); } int unscaled_size = BYTES_PER_PIXEL( (MAX(image_output_width, image_output_height) * image_info->unscaled_rows_needed)); // allocate memory required for scaling image_info->unscaled_rows = malloc(unscaled_size); if (image_info->unscaled_rows != NULL) { memset(image_info->unscaled_rows, 0xff, unscaled_size); } image_info->mixed_memory = (image_info->mixed_memory_needed != 0) ? malloc( image_info->mixed_memory_needed) : NULL; } else { image_info->scaled_height = image_output_height; image_info->scaled_width = image_output_width; } // final calculations if ((image_info->render_flags & (RENDER_FLAG_AUTO_SCALE | RENDER_FLAG_AUTO_FIT)) || image_info->scaling_needed) { /* use the full image size since both of the dimensions could be greater than * the printable area */ image_info->output_width = image_output_width; image_info->output_height = image_output_height; } else { // clip the image within the printable area image_info->output_width = MIN(image_info->printable_width, image_output_width); image_info->output_height = MIN(image_info->printable_height, image_output_height); } int delta; switch (image_info->rotation) { case ROT_90: if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { } else if (image_info->render_flags & RENDER_FLAG_CENTER_HORIZONTAL) { if (image_info->scaled_width > image_info->printable_width) { image_info->col_offset = ( (image_info->scaled_width - image_info->printable_width) / 2); } else { int paddingDelta = (image_info->printable_width - image_info->scaled_width); delta = paddingDelta / 2; image_info->output_padding_left += delta; image_info->output_padding_right += delta + (paddingDelta & 0x1); } } else if (image_info->scaled_width > image_info->printable_width) { image_info->col_offset = (image_info->scaled_width - image_info->printable_width); } else if (image_info->scaled_width < image_info->printable_width) { image_info->output_padding_right += (image_info->printable_width - image_info->scaled_width); } if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { } else if (image_info->render_flags & RENDER_FLAG_CENTER_VERTICAL) { if (image_info->scaled_height > image_info->printable_height) { image_info->row_offset = ( (image_info->scaled_height - image_info->printable_height) / 2); } else { int paddingDelta = (image_info->printable_height - image_info->scaled_height); delta = paddingDelta / 2; image_info->output_padding_top += delta; image_info->output_padding_bottom += delta + (paddingDelta & 0x1); } } else if (image_info->scaled_height < image_info->printable_height) { image_info->output_padding_bottom += (image_info->printable_height - image_info->scaled_height); } break; case ROT_180: if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { } else if (image_info->render_flags & RENDER_FLAG_CENTER_HORIZONTAL) { if (image_info->scaled_width > image_info->printable_width) { image_info->col_offset = ( (image_info->scaled_width - image_info->printable_width) / 2); } else { int paddingDelta = (image_info->printable_width - image_info->scaled_width); delta = paddingDelta / 2; image_info->output_padding_left += delta; image_info->output_padding_right += delta + (paddingDelta & 0x1); } } else if (image_info->scaled_width > image_info->printable_width) { image_info->col_offset = (image_info->scaled_width - image_info->printable_width); } else if (image_info->scaled_width < image_info->printable_width) { image_info->output_padding_left += (image_info->printable_width - image_info->scaled_width); } if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { } else if (image_info->render_flags & RENDER_FLAG_CENTER_VERTICAL) { if (image_info->scaled_height > image_info->printable_height) { image_info->row_offset = ( (image_info->scaled_height - image_info->printable_height) / 2); } else { int paddingDelta = (image_info->printable_height - image_info->scaled_height); delta = paddingDelta / 2; image_info->output_padding_top += delta; image_info->output_padding_bottom += delta + (paddingDelta & 0x1); } } else if (image_info->scaled_height > image_info->printable_height) { image_info->row_offset = (image_info->scaled_height - image_info->printable_height); } else if (image_info->scaled_height < image_info->printable_height) { image_info->output_padding_top += (image_info->printable_height - image_info->scaled_height); } break; case ROT_270: if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { } else if (image_info->render_flags & RENDER_FLAG_CENTER_HORIZONTAL) { if (image_info->scaled_width > image_info->printable_width) { image_info->col_offset = ( (image_info->scaled_width - image_info->printable_width) / 2); } else { int paddingDelta = (image_info->printable_width - image_info->scaled_width); delta = paddingDelta / 2; image_info->output_padding_left += delta; image_info->output_padding_right += delta + (paddingDelta & 0x1); } } else if (image_info->scaled_width > image_info->printable_width) { image_info->col_offset = (image_info->scaled_width - image_info->printable_width); } else if (image_info->scaled_width < image_info->printable_width) { image_info->output_padding_left += (image_info->printable_width - image_info->scaled_width); } if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { } else if (image_info->render_flags & RENDER_FLAG_CENTER_VERTICAL) { if (image_info->scaled_height > image_info->printable_height) { image_info->row_offset = ( (image_info->scaled_height - image_info->printable_height) / 2); } else { int paddingDelta = (image_info->printable_height - image_info->scaled_height); delta = paddingDelta / 2; image_info->output_padding_top += delta; image_info->output_padding_bottom += delta + (paddingDelta & 0x1); } } else if (image_info->scaled_height < image_info->printable_height) { image_info->output_padding_top += (image_info->printable_height - image_info->scaled_height); } else if (image_info->scaled_height > image_info->printable_height) { image_info->row_offset = (image_info->scaled_height - image_info->printable_height); } break; case ROT_0: default: if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { } else if (image_info->render_flags & RENDER_FLAG_CENTER_HORIZONTAL) { if (image_info->scaled_width > image_info->printable_width) { image_info->col_offset = ( (image_info->scaled_width - image_info->printable_width) / 2); } else { int paddingDelta = (image_info->printable_width - image_info->scaled_width); delta = paddingDelta / 2; image_info->output_padding_left += delta; image_info->output_padding_right += delta + (paddingDelta & 0x1); } } else if (image_info->scaled_width < image_info->printable_width) { image_info->output_padding_right += (image_info->printable_width - image_info->scaled_width); } if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { } else if (image_info->render_flags & RENDER_FLAG_CENTER_VERTICAL) { if (image_info->scaled_height > image_info->printable_height) { image_info->row_offset = ( (image_info->scaled_height - image_info->printable_height) / 2); } else { int paddingDelta = (image_info->printable_height - image_info->scaled_height); delta = paddingDelta / 2; image_info->output_padding_top += delta; image_info->output_padding_bottom += delta + (paddingDelta & 0x1); } } else if (image_info->scaled_height < image_info->printable_height) { image_info->output_padding_bottom += (image_info->printable_height - image_info->scaled_height); } break; } return OK; } static int _get_width(wprint_image_info_t *image_info, unsigned int padding_options) { int width; if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { width = image_info->printable_width; } else if ((image_info->render_flags & RENDER_FLAG_AUTO_FIT) || image_info->scaling_needed) { width = image_info->scaled_width; } else { width = image_info->output_width; } if (padding_options & PAD_LEFT) { width += image_info->output_padding_left; } if (padding_options & PAD_RIGHT) { width += image_info->output_padding_right; } return width; } int wprint_image_get_width(wprint_image_info_t *image_info) { int width = _get_width(image_info, image_info->padding_options); LOGD("wprint_image_get_width(): %d", width); return width; } int wprint_image_get_output_buff_size(wprint_image_info_t *image_info) { int width = MAX(MAX(image_info->scaled_width, image_info->scaled_height), _get_width(image_info, image_info->padding_options)); LOGD("wprint_image_get_output_buff_size(): %dx%d", width, image_info->output_rows); return (BYTES_PER_PIXEL(width * image_info->output_rows)); } static int _get_height(wprint_image_info_t *image_info, unsigned int padding_options) { int height; if (image_info->render_flags & RENDER_FLAG_AUTO_SCALE) { height = image_info->printable_height; } else { height = MIN(image_info->scaled_height, image_info->printable_height); } if (padding_options & PAD_TOP) { height += image_info->output_padding_top; } if (padding_options & PAD_BOTTOM) { height += image_info->output_padding_bottom; } return height; } int wprint_image_get_height(wprint_image_info_t *image_info) { int height = _get_height(image_info, image_info->padding_options); LOGD("wprint_image_get_height(): %d", height); return height; } bool wprint_image_is_landscape(wprint_image_info_t *image_info) { return (image_info->width > image_info->height); } int _decode_stripe(wprint_image_info_t *image_info, int start_row, int num_rows, unsigned int padding_options, unsigned char *rgb_pixels) { int image_y, image_x; unsigned char *image_data; int nbytes = -1; int rbytes; int col_offset; int old_num_rows; const image_decode_ifc_t *decode_ifc = image_info->decode_ifc; if ((decode_ifc == NULL) || (decode_ifc->decode_row == NULL)) { return nbytes; } nbytes = 0; start_row += image_info->row_offset; rbytes = BYTES_PER_PIXEL(image_info->output_width); // get padding values int padding_left = ((padding_options & PAD_LEFT) ? BYTES_PER_PIXEL( image_info->output_padding_left) : 0); int padding_right = ((padding_options & PAD_RIGHT) ? BYTES_PER_PIXEL( image_info->output_padding_right) : 0); old_num_rows = ~num_rows; switch (image_info->rotation) { case ROT_90: col_offset = BYTES_PER_PIXEL(image_info->col_offset); while (num_rows > 0) { if (start_row > image_info->sampled_width) { return nbytes; } if (old_num_rows == num_rows) { LOGE("Bad ROT_90 calculations. Exiting to prevent infinite loop"); return ERROR; } old_num_rows = num_rows; if ((image_info->output_swath_start == -1) || (start_row < image_info->output_swath_start) || (start_row >= (image_info->output_swath_start + image_info->rows_cached))) { if (image_info->output_swath_start == -1) { if (decode_ifc->decode_row(image_info, 0) == NULL) { return ERROR; } } image_info->output_swath_start = ((start_row / image_info->rows_cached) * image_info->rows_cached); for (image_y = 0; image_y < image_info->sampled_height; image_y++) { image_data = decode_ifc->decode_row(image_info, image_y); if (image_data == NULL) { return ERROR; } for (image_x = 0; (image_x < image_info->rows_cached && ((image_x + image_info->output_swath_start) < image_info->sampled_width)); image_x++) { memcpy(image_info->output_cache[image_x] + BYTES_PER_PIXEL( (image_info->sampled_height - image_y - 1)), image_data + BYTES_PER_PIXEL( (image_info->output_swath_start + image_x)), BYTES_PER_PIXEL(1)); } } } for (image_y = start_row; ((num_rows != 0) && (image_y < image_info->sampled_width) && (image_y < (image_info->output_swath_start + image_info->rows_cached))); image_y++, num_rows--, start_row++) { memcpy(rgb_pixels + padding_left, image_info->output_cache[image_y - image_info->output_swath_start] + col_offset, rbytes); nbytes += rbytes + padding_left + padding_right; rgb_pixels += rbytes + padding_left + padding_right; } } break; case ROT_180: col_offset = image_info->col_offset; for (image_y = start_row; ((image_y < image_info->sampled_height) && (num_rows != 0)); image_y++, num_rows--) { image_data = decode_ifc->decode_row(image_info, (image_info->sampled_height - image_y - 1)); if (image_data == NULL) { return ERROR; } for (image_x = 0; image_x < image_info->output_width; image_x++) { memcpy(rgb_pixels + padding_left + BYTES_PER_PIXEL(image_x), image_data + BYTES_PER_PIXEL(image_info->sampled_width - image_x - col_offset - 1), BYTES_PER_PIXEL(1)); } nbytes += rbytes + padding_left + padding_right; rgb_pixels += rbytes + padding_left + padding_right; } break; case ROT_270: col_offset = BYTES_PER_PIXEL(image_info->col_offset); while (num_rows > 0) { if (start_row > image_info->sampled_width) { return nbytes; } if (old_num_rows == num_rows) { LOGE("Bad ROT_270 calculations. Erroring out to prevent infinite loop."); return ERROR; } old_num_rows = num_rows; if ((image_info->output_swath_start == -1) || (start_row < image_info->output_swath_start) || (start_row >= (image_info->output_swath_start + image_info->rows_cached))) { if (image_info->output_swath_start == -1) { if (decode_ifc->decode_row(image_info, 0) == NULL) { return ERROR; } } image_info->output_swath_start = ((start_row / image_info->rows_cached) * image_info->rows_cached); for (image_y = 0; image_y < image_info->sampled_height; image_y++) { image_data = decode_ifc->decode_row(image_info, image_y); if (image_data == NULL) { return ERROR; } for (image_x = 0; ((image_x < image_info->rows_cached) && ((image_x + image_info->output_swath_start) < image_info->sampled_width)); image_x++) { memcpy(image_info->output_cache[image_x] + BYTES_PER_PIXEL(image_y), image_data + BYTES_PER_PIXEL(image_info->sampled_width - (image_info->output_swath_start + image_x) - 1), BYTES_PER_PIXEL(1)); } } } for (image_y = start_row; ((num_rows != 0) && (image_y < image_info->sampled_width) && (image_y < (image_info->output_swath_start + image_info->rows_cached))); image_y++, num_rows--, start_row++) { memcpy(rgb_pixels + padding_left, image_info->output_cache[image_y - image_info->output_swath_start] + col_offset, rbytes); nbytes += rbytes + padding_left + padding_right; rgb_pixels += rbytes + padding_left + padding_right; } } break; case ROT_0: default: col_offset = BYTES_PER_PIXEL(image_info->col_offset); for (image_y = start_row; ((image_y < image_info->sampled_height) && (num_rows != 0)); image_y++, num_rows--) { image_data = decode_ifc->decode_row(image_info, image_y); if (image_data == NULL) { LOGE("ERROR: received no data for row: %d", image_y); return ERROR; } memcpy(rgb_pixels + padding_left, image_data + col_offset, rbytes); nbytes += rbytes + padding_left + padding_right; rgb_pixels += rbytes + padding_left + padding_right; } break; } return nbytes; } int wprint_image_decode_stripe(wprint_image_info_t *image_info, int start_row, int *height, unsigned char *rgb_pixels) { int nbytes = 0; int bytes_per_row = BYTES_PER_PIXEL(_get_width(image_info, image_info->padding_options)); if (height == NULL) { return -1; } int num_rows = *height; *height = 0; // get padding values int padding_left = ((image_info->padding_options & PAD_LEFT) ? BYTES_PER_PIXEL( image_info->output_padding_left) : 0); int padding_right = ((image_info->padding_options & PAD_RIGHT) ? BYTES_PER_PIXEL( image_info->output_padding_right) : 0); int padding_top = ((image_info->padding_options & PAD_TOP) ? image_info->output_padding_top : 0); // handle invalid requests if ((start_row < 0) || (start_row >= _get_height(image_info, image_info->padding_options))) { *height = 0; return ERROR; } else if ((image_info->padding_options & PAD_TOP) && (start_row < padding_top)) { int blank_rows = MIN(num_rows, (padding_top - start_row)); int bytesToBlank = (blank_rows * bytes_per_row); nbytes += bytesToBlank; num_rows -= blank_rows; *height += blank_rows; memset(rgb_pixels, 0xff, bytesToBlank); rgb_pixels += bytesToBlank; start_row += blank_rows; } else if ((image_info->padding_options & PAD_BOTTOM) && (start_row >= _get_height(image_info, image_info->padding_options & PAD_TOP))) { // handle image padding on bottom int blank_rows = MIN(num_rows, _get_height(image_info, image_info->padding_options) - start_row); int bytesToBlank = (blank_rows * bytes_per_row); nbytes += bytesToBlank; num_rows -= blank_rows; *height += blank_rows; memset(rgb_pixels, 0xff, bytesToBlank); rgb_pixels += bytesToBlank; start_row += blank_rows; } if (num_rows <= 0) { return nbytes; } unsigned char *pad_rgb_pixels = rgb_pixels; int unpadded_start_row = start_row; // adjust start row to fit within image bounds if (image_info->padding_options & PAD_TOP) { unpadded_start_row -= padding_top; } // check if we need to scaling if (image_info->scaling_needed) { // scaling required uint32 scaled_start_row = unpadded_start_row; if (image_info->scaled_height > image_info->printable_height) { scaled_start_row += ((image_info->scaled_height - image_info->printable_height) / 2); } uint32 stripe_height, mixed; uint16 unscaled_row_start, unscaled_row_end; uint16 generated_rows, row_offset; uint32 predecoded_rows; int scaled_num_rows = (((scaled_start_row + num_rows) > image_info->scaled_height) ? (image_info->scaled_height - scaled_start_row) : num_rows); while (scaled_num_rows > 0) { stripe_height = MIN(scaled_num_rows, image_info->stripe_height); scaler_calculate_scaling_rows(scaled_start_row, MIN((scaled_start_row + stripe_height - 1), (image_info->scaled_height - 1)), (void *) &image_info->scaler_config, &unscaled_row_start, &unscaled_row_end, &generated_rows, &row_offset, &mixed); if (mixed > image_info->mixed_memory_needed) { LOGE("need more memory"); return -1; } predecoded_rows = 0; if (unscaled_row_start <= image_info->unscaled_end_row) { // shift over any rows we need that were decoded in the previous pass predecoded_rows = (image_info->unscaled_end_row - unscaled_row_start) + 1; memmove(image_info->unscaled_rows, image_info->unscaled_rows + BYTES_PER_PIXEL(((unscaled_row_start - image_info->unscaled_start_row) * image_info->output_width)), BYTES_PER_PIXEL((predecoded_rows * image_info->output_width))); } image_info->unscaled_start_row = unscaled_row_start; image_info->unscaled_end_row = unscaled_row_end; /* * decode the remaining rows we need * don't pad the output since we need to move the data after scaling anyways */ int rowsLeftToDecode = ((image_info->unscaled_end_row - (image_info->unscaled_start_row + predecoded_rows)) + 1); if (rowsLeftToDecode > 0) { int dbytes = _decode_stripe(image_info, image_info->unscaled_start_row + predecoded_rows, rowsLeftToDecode, PAD_NONE, (image_info->unscaled_rows + BYTES_PER_PIXEL(predecoded_rows * image_info->output_width))); if (dbytes <= 0) { if (dbytes < 0) { LOGE("couldn't decode rows"); } return dbytes; } } else if (predecoded_rows <= 0) { return 0; } // scale the data to it's final size scaler_scale_image_data(image_info->unscaled_rows, (void *) &image_info->scaler_config, rgb_pixels, image_info->mixed_memory); // do we have to move the data around?? if ((row_offset != 0) || (image_info->scaled_width > image_info->printable_width) || (padding_left > 0) || (padding_right > 0)) { int delta = 0; int pixelsToMove = BYTES_PER_PIXEL(MIN(image_info->scaled_width, image_info->printable_width)); int memMoveRow = ((bytes_per_row < image_info->scaler_config.iOutBufWidth) ? 0 : ( stripe_height - 1)); int memMoveIncrement = ((bytes_per_row < image_info->scaler_config.iOutBufWidth) ? 1 : -1); // if scaled width is greater than the printable area drop pixels on either size if (image_info->scaled_width > image_info->printable_width) { delta = BYTES_PER_PIXEL( ((image_info->scaled_width - image_info->printable_width) / 2)); } // move the data into the correct location in the output buffer for (generated_rows = 0; generated_rows < stripe_height; generated_rows++, memMoveRow += memMoveIncrement) { memmove(rgb_pixels + (memMoveRow * bytes_per_row) + padding_left, rgb_pixels + ((memMoveRow + row_offset) * image_info->scaler_config.iOutBufWidth) + delta, pixelsToMove); } } num_rows -= stripe_height; scaled_num_rows -= stripe_height; scaled_start_row += stripe_height; nbytes += (bytes_per_row * stripe_height); rgb_pixels += (bytes_per_row * stripe_height); *height += stripe_height; start_row += stripe_height; } } else { // no scaling needed // decode the request int dbytes = _decode_stripe(image_info, unpadded_start_row, (((unpadded_start_row + num_rows) > _get_height(image_info, PAD_NONE)) ? (_get_height(image_info, PAD_NONE) - unpadded_start_row) : num_rows), image_info->padding_options, rgb_pixels); if (dbytes <= 0) { if (dbytes < 0) { LOGE("couldn't decode rows"); } return dbytes; } int rows = (dbytes / bytes_per_row); *height += rows; num_rows -= rows; start_row += rows; unpadded_start_row += rows; rgb_pixels += dbytes; nbytes += dbytes; } // white pad the left and right edges if ((pad_rgb_pixels != rgb_pixels) && (image_info->padding_options & (PAD_LEFT | PAD_RIGHT)) && ((padding_left != 0) || (padding_right != 0))) { while (pad_rgb_pixels != rgb_pixels) { if (padding_left != 0) { memset(pad_rgb_pixels, 0xff, padding_left); } if (padding_right != 0) { memset(pad_rgb_pixels + (bytes_per_row - padding_right), 0xff, padding_right); } pad_rgb_pixels += bytes_per_row; } } if ((image_info->padding_options & PAD_BOTTOM) && (num_rows > 0) && (start_row >= _get_height(image_info, image_info->padding_options & PAD_TOP))) { int blank_rows = MIN(num_rows, _get_height(image_info, image_info->padding_options) - start_row); int bytesToBlank = (blank_rows * bytes_per_row); nbytes += bytesToBlank; num_rows -= blank_rows; *height += blank_rows; memset(rgb_pixels, 0xff, bytesToBlank); rgb_pixels += bytesToBlank; } return nbytes; } int wprint_image_compute_rows_to_cache(wprint_image_info_t *image_info) { int i; int row_width, max_rows; unsigned char output_mem; int available_mem = MAX_DECODE_MEM; int width, height; width = image_info->sampled_width; height = image_info->sampled_height; switch (image_info->rotation) { case ROT_90: case ROT_270: output_mem = 1; row_width = height; break; case ROT_0: case ROT_180: default: output_mem = 0; row_width = width; break; } available_mem -= (wprint_image_get_output_buff_size(image_info) * image_info->concurrent_stripes); if (image_info->unscaled_rows != NULL) { // remove any memory allocated for scaling from our pool available_mem -= BYTES_PER_PIXEL( image_info->unscaled_rows_needed * image_info->output_width); available_mem -= image_info->mixed_memory_needed; } // make sure we have a valid amount of memory to work with available_mem = MAX(available_mem, MIN_DECODE_MEM); LOGD("wprint_image_compute_rows_to_cache(): %d bytes available for row caching", available_mem); row_width = BYTES_PER_PIXEL(row_width); max_rows = (available_mem / row_width); if (max_rows > 0xf) { max_rows &= ~0xf; } LOGD("wprint_image_compute_rows_to_cache(): based on row width %d (%d), %d rows can be cached", row_width, output_mem, max_rows); if (output_mem) { if (max_rows > (MAX(width, height))) { max_rows = MAX(width, height); } image_info->output_cache = (unsigned char **) malloc(sizeof(unsigned char *) * max_rows); for (i = 0; i < max_rows; i++) { image_info->output_cache[i] = (unsigned char *) malloc(row_width); } } else { max_rows = MIN(max_rows, height); } image_info->rows_cached = max_rows; LOGD("wprint_image_compute_rows_to_cache(): %d rows being cached", max_rows); return wprint_image_input_rows_cached(image_info); } int wprint_image_input_rows_cached(wprint_image_info_t *image_info) { return ((image_info->output_cache != NULL) ? 1 : image_info->rows_cached); } void wprint_image_cleanup(wprint_image_info_t *image_info) { int i; const image_decode_ifc_t *decode_ifc = image_info->decode_ifc; if ((decode_ifc != NULL) && (decode_ifc->cleanup != NULL)) { decode_ifc->cleanup(image_info); } // free memory allocated for saving unscaled rows if (image_info->unscaled_rows != NULL) { free(image_info->unscaled_rows); image_info->unscaled_rows = NULL; } // free memory allocated needed for mixed scaling if (image_info->mixed_memory != NULL) { free(image_info->mixed_memory); image_info->mixed_memory = NULL; } if (image_info->output_cache != NULL) { for (i = 0; i < image_info->rows_cached; i++) { free(image_info->output_cache[i]); } free(image_info->output_cache); image_info->output_cache = NULL; } }