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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,238 @@ | ||
| /* | ||
| * OpenJPH High Throughput JPEG 2000 decoder. | ||
| * | ||
| * Copyright (c) 2024 Brad Hards | ||
| * | ||
| * This file is part of libheif. | ||
| * | ||
| * libheif is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Lesser General Public License as | ||
| * published by the Free Software Foundation, either version 3 of | ||
| * the License, or (at your option) any later version. | ||
| * | ||
| * libheif is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Lesser General Public License for more details. | ||
| * | ||
| */ | ||
|
|
||
| #include "libheif/heif.h" | ||
| #include "libheif/heif_plugin.h" | ||
| #include "decoder_openjph.h" | ||
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|
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| #include <algorithm> | ||
| #include <cassert> | ||
| #include <cstdio> | ||
| #include <vector> | ||
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| #include <openjph/ojph_arch.h> | ||
| #include <openjph/ojph_codestream.h> | ||
| #include <openjph/ojph_defs.h> | ||
| #include <openjph/ojph_file.h> | ||
| #include <openjph/ojph_mem.h> | ||
| #include <openjph/ojph_params.h> | ||
| #include <openjph/ojph_version.h> | ||
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| struct openjph_dec_context | ||
| { | ||
| std::vector<uint8_t> data; | ||
| bool strict_decoding = false; | ||
| }; | ||
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|
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| static const int OPENJPH_DEC_PLUGIN_PRIORITY = 100; | ||
|
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| static void openjph_dec_init_plugin() | ||
| { | ||
| } | ||
|
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| static void openjph_dec_deinit_plugin() | ||
| { | ||
| } | ||
|
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| static int openjph_dec_does_support_format(enum heif_compression_format format) | ||
| { | ||
| if (format == heif_compression_HTJ2K) { | ||
| return OPENJPH_DEC_PLUGIN_PRIORITY; | ||
| } else { | ||
| return 0; | ||
| } | ||
| } | ||
|
|
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| struct heif_error openjph_dec_new_decoder(void **dec) | ||
| { | ||
| struct openjph_dec_context *decoder_context = new openjph_dec_context(); | ||
| *dec = decoder_context; | ||
| return heif_error_ok; | ||
| } | ||
|
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| void openjph_dec_free_decoder(void *decoder_raw) | ||
| { | ||
| openjph_dec_context *decoder_context = (openjph_dec_context *)decoder_raw; | ||
| delete decoder_context; | ||
| } | ||
|
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| void openjph_dec_set_strict_decoding(void *decoder_raw, int flag) | ||
| { | ||
| openjph_dec_context *decoder_context = (openjph_dec_context *)decoder_raw; | ||
| decoder_context->strict_decoding = flag; | ||
| } | ||
|
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| struct heif_error openjph_dec_push_data(void *decoder_raw, const void *frame_data, size_t frame_size) | ||
| { | ||
| openjph_dec_context *decoder_context = (openjph_dec_context *)decoder_raw; | ||
| const uint8_t* data = (const uint8_t*)frame_data; | ||
| decoder_context->data.insert(decoder_context->data.end(), data, data + frame_size); | ||
| return heif_error_ok; | ||
| } | ||
|
|
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| struct heif_error openjph_dec_decode_image(void *decoder_raw, struct heif_image **out_img) | ||
| { | ||
| openjph_dec_context *decoder_context = (openjph_dec_context *)decoder_raw; | ||
| ojph::codestream codestream; | ||
| ojph::mem_infile input; | ||
| input.open(decoder_context->data.data(), decoder_context->data.size()); | ||
| if (!(decoder_context->strict_decoding)) { | ||
| codestream.enable_resilience(); | ||
| } | ||
| codestream.read_headers(&input); | ||
| codestream.create(); | ||
|
|
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| struct heif_image* heif_img = nullptr; | ||
|
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| ojph::param_siz siz = codestream.access_siz(); | ||
| ojph::point imageExtent = siz.get_image_extent(); | ||
| ojph::point imageOffset = siz.get_image_offset(); | ||
| uint32_t width = imageExtent.x - imageOffset.x; | ||
| uint32_t height = imageExtent.y - imageOffset.y; | ||
|
|
||
| // TODO: work out colorspace and chroma correctly | ||
| heif_colorspace colourspace = heif_colorspace_undefined; | ||
| heif_chroma chroma = heif_chroma_undefined; | ||
| if (siz.get_num_components() == 3) { | ||
| colourspace = heif_colorspace_YCbCr; | ||
| chroma = heif_chroma_444; | ||
| // check components after the first one | ||
| for (unsigned int i = 1; i < siz.get_num_components(); ++i) { | ||
| ojph::point downsampling = siz.get_downsampling(i); | ||
| if ((downsampling.x == 1) && (downsampling.y == 1)) { | ||
| // 4:4:4 | ||
| if (chroma != heif_chroma_444) { | ||
| struct heif_error err = {heif_error_Decoder_plugin_error, heif_suberror_Unspecified, "mismatched chroma format"}; | ||
| return err; | ||
| } | ||
| } else if ((downsampling.x == 2) && (downsampling.y == 1)) { | ||
| // 4:2:2 | ||
| if ((chroma == heif_chroma_444) && (i == 1)) { | ||
| chroma = heif_chroma_422; | ||
| } else if (chroma != heif_chroma_422) { | ||
| struct heif_error err = {heif_error_Decoder_plugin_error, heif_suberror_Unspecified, "mismatched chroma format"}; | ||
| return err; | ||
| } | ||
| } else if ((downsampling.x == 2) && (downsampling.y == 2)) { | ||
| // 4:2:0 | ||
| if ((chroma == heif_chroma_444) && (i == 1)) { | ||
| chroma = heif_chroma_420; | ||
| } else if (chroma != heif_chroma_420) { | ||
| struct heif_error err = {heif_error_Decoder_plugin_error, heif_suberror_Unspecified, "mismatched chroma format"}; | ||
| return err; | ||
| } | ||
|
|
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| } | ||
| } | ||
| } else if (siz.get_num_components() == 1) { | ||
| colourspace = heif_colorspace_monochrome; | ||
| chroma = heif_chroma_monochrome; | ||
| } else { | ||
| struct heif_error err = {heif_error_Decoder_plugin_error, heif_suberror_Unspecified, "unsupported number of components"}; | ||
| return err; | ||
|
|
||
| } | ||
|
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| struct heif_error err = heif_image_create(width, height, colourspace, chroma, &heif_img); | ||
| if (err.code != heif_error_Ok) { | ||
| assert(heif_img == nullptr); | ||
| return err; | ||
| } | ||
|
|
||
| // TODO: map component to channel | ||
| if (colourspace == heif_colorspace_monochrome) { | ||
| heif_image_add_plane(heif_img, heif_channel_Y, width, height, siz.get_bit_depth(0)); | ||
| // TODO: make image | ||
| struct heif_error err = {heif_error_Decoder_plugin_error, heif_suberror_Unspecified, "unsupported monochrome image"}; | ||
| return err; | ||
| } else { | ||
| if (codestream.is_planar()) { | ||
| heif_channel channels[] = {heif_channel_Y, heif_channel_Cb, heif_channel_Cr}; | ||
| for (uint32_t componentIndex = 0; componentIndex < siz.get_num_components(); ++componentIndex) { | ||
| uint32_t component_width = siz.get_recon_width(componentIndex); | ||
| uint32_t component_height = siz.get_recon_height(componentIndex); | ||
| uint32_t bit_depth = siz.get_bit_depth(componentIndex); | ||
| heif_channel channel = channels[componentIndex]; | ||
| heif_image_add_plane(heif_img, channel, component_width, component_height, bit_depth); | ||
| int planeStride; | ||
| uint8_t* plane = heif_image_get_plane(heif_img, channel, &planeStride); | ||
| for (uint32_t rowIndex = 0; rowIndex < component_height; rowIndex++) { | ||
| uint32_t comp_num; | ||
| ojph::line_buf *line = codestream.pull(comp_num); | ||
| const int32_t *cursor = line->i32; | ||
| for (uint32_t colIndex = 0; colIndex < component_width; ++colIndex) { | ||
| int v = *cursor; | ||
| // TODO: this only works for the 8 bit case | ||
| plane[rowIndex * planeStride + colIndex] = (uint8_t) v; | ||
| cursor++; | ||
| } | ||
| } | ||
| } | ||
| } else { | ||
| struct heif_error err = {heif_error_Decoder_plugin_error, heif_suberror_Unspecified, "unsupported interleaved image"}; | ||
| return err; | ||
| } | ||
| } | ||
| *out_img = heif_img; | ||
| return heif_error_ok; | ||
| } | ||
|
|
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| static const int MAX_PLUGIN_NAME_LENGTH = 80; | ||
| static char plugin_name[MAX_PLUGIN_NAME_LENGTH]; | ||
|
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| const char *openjph_dec_plugin_name() | ||
| { | ||
| snprintf(plugin_name, MAX_PLUGIN_NAME_LENGTH, | ||
| "OpenJPH %s.%s.%s", | ||
| OJPH_INT_TO_STRING(OPENJPH_VERSION_MAJOR), | ||
| OJPH_INT_TO_STRING(OPENJPH_VERSION_MINOR), | ||
| OJPH_INT_TO_STRING(OPENJPH_VERSION_PATCH)); | ||
| plugin_name[MAX_PLUGIN_NAME_LENGTH - 1] = 0; | ||
|
|
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| return plugin_name; | ||
| } | ||
|
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| static const struct heif_decoder_plugin decoder_openjph | ||
| { | ||
| 3, | ||
| openjph_dec_plugin_name, | ||
| openjph_dec_init_plugin, | ||
| openjph_dec_deinit_plugin, | ||
| openjph_dec_does_support_format, | ||
| openjph_dec_new_decoder, | ||
| openjph_dec_free_decoder, | ||
| openjph_dec_push_data, | ||
| openjph_dec_decode_image, | ||
| openjph_dec_set_strict_decoding, | ||
| "openjph" | ||
| }; | ||
|
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| const struct heif_decoder_plugin *get_decoder_plugin_openjph() | ||
| { | ||
| return &decoder_openjph; | ||
| } | ||
|
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||
| #if PLUGIN_OPENJPH_DECODER | ||
| heif_plugin_info plugin_info{ | ||
| 1, | ||
| heif_plugin_type_decoder, | ||
| &decoder_openjph}; | ||
| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| /* | ||
| * OpenJPH High Throughput JPEG 2000 decoder. | ||
| * | ||
| * Copyright (c) 2024 Brad Hards | ||
| * | ||
| * This file is part of libheif. | ||
| * | ||
| * libheif is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Lesser General Public License as | ||
| * published by the Free Software Foundation, either version 3 of | ||
| * the License, or (at your option) any later version. | ||
| * | ||
| * libheif is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public License | ||
| * along with libheif. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
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| #ifndef LIBHEIF_HEIF_DECODER_OPENJPH_H | ||
| #define LIBHEIF_HEIF_DECODER_OPENJPH_H | ||
|
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| #include "libheif/common_utils.h" | ||
|
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| const struct heif_decoder_plugin* get_decoder_plugin_openjph(); | ||
|
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| #if PLUGIN_OPENJPH_DECODER | ||
| extern "C" { | ||
| MAYBE_UNUSED LIBHEIF_API extern heif_plugin_info plugin_info; | ||
| } | ||
| #endif | ||
|
|
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| #endif |