diff options
Diffstat (limited to 'indra/llimagej2coj')
| -rw-r--r-- | indra/llimagej2coj/llimagej2coj.cpp | 1698 |
1 files changed, 849 insertions, 849 deletions
diff --git a/indra/llimagej2coj/llimagej2coj.cpp b/indra/llimagej2coj/llimagej2coj.cpp index 2ac125c62f..3da1fff945 100644 --- a/indra/llimagej2coj/llimagej2coj.cpp +++ b/indra/llimagej2coj/llimagej2coj.cpp @@ -1,849 +1,849 @@ -/**
- * @file llimagej2coj.cpp
- * @brief This is an implementation of JPEG2000 encode/decode using OpenJPEG.
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library 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;
- * version 2.1 of the License only.
- *
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
-
-#include "linden_common.h"
-#include "llimagej2coj.h"
-
-// this is defined so that we get static linking.
-#include "openjpeg.h"
-#include "event.h"
-#include "cio.h"
-
-#define MAX_ENCODED_DISCARD_LEVELS 5
-
-// Factory function: see declaration in llimagej2c.cpp
-LLImageJ2CImpl* fallbackCreateLLImageJ2CImpl()
-{
- return new LLImageJ2COJ();
-}
-
-std::string LLImageJ2COJ::getEngineInfo() const
-{
-#ifdef OPENJPEG_VERSION
- return std::string("OpenJPEG: " OPENJPEG_VERSION ", Runtime: ")
- + opj_version();
-#else
- return std::string("OpenJPEG runtime: ") + opj_version();
-#endif
-}
-
-// Return string from message, eliminating final \n if present
-static std::string chomp(const char* msg)
-{
- // stomp trailing \n
- std::string message = msg;
- if (!message.empty())
- {
- size_t last = message.size() - 1;
- if (message[last] == '\n')
- {
- message.resize(last);
- }
-}
- return message;
-}
-
-/**
-sample error callback expecting a LLFILE* client object
-*/
-void error_callback(const char* msg, void*)
-{
- LL_DEBUGS() << "LLImageJ2COJ: " << chomp(msg) << LL_ENDL;
-}
-/**
-sample warning callback expecting a LLFILE* client object
-*/
-void warning_callback(const char* msg, void*)
-{
- LL_DEBUGS() << "LLImageJ2COJ: " << chomp(msg) << LL_ENDL;
-}
-/**
-sample debug callback expecting no client object
-*/
-void info_callback(const char* msg, void*)
-{
- LL_DEBUGS() << "LLImageJ2COJ: " << chomp(msg) << LL_ENDL;
-}
-
-// Divide a by 2 to the power of b and round upwards
-int ceildivpow2(int a, int b)
-{
- return (a + (1 << b) - 1) >> b;
-}
-
-class JPEG2KBase
-{
-public:
- JPEG2KBase() {}
-
- U8* buffer = nullptr;
- OPJ_SIZE_T size = 0;
- OPJ_OFF_T offset = 0;
-};
-
-#define WANT_VERBOSE_OPJ_SPAM LL_DEBUG
-
-static void opj_info(const char* msg, void* user_data)
-{
- llassert(user_data);
-#if WANT_VERBOSE_OPJ_SPAM
- LL_INFOS("OpenJPEG") << msg << LL_ENDL;
-#endif
-}
-
-static void opj_warn(const char* msg, void* user_data)
-{
- llassert(user_data);
-#if WANT_VERBOSE_OPJ_SPAM
- LL_WARNS("OpenJPEG") << msg << LL_ENDL;
-#endif
-}
-
-static void opj_error(const char* msg, void* user_data)
-{
- llassert(user_data);
-#if WANT_VERBOSE_OPJ_SPAM
- LL_WARNS("OpenJPEG") << msg << LL_ENDL;
-#endif
-}
-
-static OPJ_SIZE_T opj_read(void * buffer, OPJ_SIZE_T bytes, void* user_data)
-{
- llassert(user_data);
- JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data);
- OPJ_SIZE_T remainder = (jpeg_codec->size - jpeg_codec->offset);
- if (remainder <= 0)
- {
- jpeg_codec->offset = jpeg_codec->size;
- // Indicate end of stream (hacky?)
- return (OPJ_OFF_T)-1;
- }
- OPJ_SIZE_T to_read = llclamp(U32(bytes), U32(0), U32(remainder));
- memcpy(buffer, jpeg_codec->buffer + jpeg_codec->offset, to_read);
- jpeg_codec->offset += to_read;
- return to_read;
-}
-
-static OPJ_SIZE_T opj_write(void * buffer, OPJ_SIZE_T bytes, void* user_data)
-{
- llassert(user_data);
- JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data);
- OPJ_SIZE_T remainder = jpeg_codec->size - jpeg_codec->offset;
- if (remainder < bytes)
- {
- OPJ_SIZE_T new_size = jpeg_codec->size + (bytes - remainder);
- U8* new_buffer = (U8*)ll_aligned_malloc_16(new_size);
- memcpy(new_buffer, jpeg_codec->buffer, jpeg_codec->offset);
- U8* old_buffer = jpeg_codec->buffer;
- jpeg_codec->buffer = new_buffer;
- ll_aligned_free_16(old_buffer);
- jpeg_codec->size = new_size;
- }
- memcpy(jpeg_codec->buffer + jpeg_codec->offset, buffer, bytes);
- jpeg_codec->offset += bytes;
- return bytes;
-}
-
-static OPJ_OFF_T opj_skip(OPJ_OFF_T bytes, void* user_data)
-{
- JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data);
- jpeg_codec->offset += bytes;
-
- if (jpeg_codec->offset > jpeg_codec->size)
- {
- jpeg_codec->offset = jpeg_codec->size;
- // Indicate end of stream
- return (OPJ_OFF_T)-1;
- }
-
- if (jpeg_codec->offset < 0)
- {
- // Shouldn't be possible?
- jpeg_codec->offset = 0;
- return (OPJ_OFF_T)-1;
- }
-
- return bytes;
-}
-
-static OPJ_BOOL opj_seek(OPJ_OFF_T bytes, void * user_data)
-{
- JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data);
- jpeg_codec->offset = bytes;
- jpeg_codec->offset = llclamp(U32(jpeg_codec->offset), U32(0), U32(jpeg_codec->size));
- return OPJ_TRUE;
-}
-
-static void opj_free_user_data(void * user_data)
-{
- JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data);
- // Don't free, data is managed externally
- jpeg_codec->buffer = nullptr;
- jpeg_codec->size = 0;
- jpeg_codec->offset = 0;
-}
-
-static void opj_free_user_data_write(void * user_data)
-{
- JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data);
- // Free, data was allocated here
- ll_aligned_free_16(jpeg_codec->buffer);
- jpeg_codec->buffer = nullptr;
- jpeg_codec->size = 0;
- jpeg_codec->offset = 0;
-}
-
-class JPEG2KDecode : public JPEG2KBase
-{
-public:
-
- JPEG2KDecode(S8 discardLevel)
- {
- memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
- memset(¶meters, 0, sizeof(opj_dparameters_t));
- event_mgr.error_handler = error_callback;
- event_mgr.warning_handler = warning_callback;
- event_mgr.info_handler = info_callback;
- opj_set_default_decoder_parameters(¶meters);
- parameters.cp_reduce = discardLevel;
- }
-
- ~JPEG2KDecode()
- {
- if (decoder)
- {
- opj_destroy_codec(decoder);
- }
- decoder = nullptr;
-
- if (image)
- {
- opj_image_destroy(image);
- }
- image = nullptr;
-
- if (stream)
- {
- opj_stream_destroy(stream);
- }
- stream = nullptr;
-
- if (codestream_info)
- {
- opj_destroy_cstr_info(&codestream_info);
- }
- codestream_info = nullptr;
- }
-
- bool readHeader(
- U8* data,
- U32 dataSize,
- S32& widthOut,
- S32& heightOut,
- S32& components,
- S32& discard_level)
- {
- parameters.flags |= OPJ_DPARAMETERS_DUMP_FLAG;
-
- decoder = opj_create_decompress(OPJ_CODEC_J2K);
-
- if (!opj_setup_decoder(decoder, ¶meters))
- {
- return false;
- }
-
- if (stream)
- {
- opj_stream_destroy(stream);
- }
-
- stream = opj_stream_create(dataSize, true);
- if (!stream)
- {
- return false;
- }
-
- opj_stream_set_user_data(stream, this, opj_free_user_data);
- opj_stream_set_user_data_length(stream, dataSize);
- opj_stream_set_read_function(stream, opj_read);
- opj_stream_set_write_function(stream, opj_write);
- opj_stream_set_skip_function(stream, opj_skip);
- opj_stream_set_seek_function(stream, opj_seek);
-
- buffer = data;
- size = dataSize;
- offset = 0;
-
- // enable decoding partially loaded images
- opj_decoder_set_strict_mode(decoder, OPJ_FALSE);
-
- /* Read the main header of the codestream and if necessary the JP2 boxes*/
- if (!opj_read_header((opj_stream_t*)stream, decoder, &image))
- {
- return false;
- }
-
- codestream_info = opj_get_cstr_info(decoder);
-
- if (!codestream_info)
- {
- return false;
- }
-
- U32 tileDimX = codestream_info->tdx;
- U32 tileDimY = codestream_info->tdy;
- U32 tilesW = codestream_info->tw;
- U32 tilesH = codestream_info->th;
-
- widthOut = S32(tilesW * tileDimX);
- heightOut = S32(tilesH * tileDimY);
- components = codestream_info->nbcomps;
-
- discard_level = 0;
- while (tilesW > 1 && tilesH > 1 && discard_level < MAX_DISCARD_LEVEL)
- {
- discard_level++;
- tilesW >>= 1;
- tilesH >>= 1;
- }
-
- return true;
- }
-
- bool decode(U8* data, U32 dataSize, U32* channels, U8 discard_level)
- {
- parameters.flags &= ~OPJ_DPARAMETERS_DUMP_FLAG;
-
- decoder = opj_create_decompress(OPJ_CODEC_J2K);
- opj_setup_decoder(decoder, ¶meters);
-
- opj_set_info_handler(decoder, opj_info, this);
- opj_set_warning_handler(decoder, opj_warn, this);
- opj_set_error_handler(decoder, opj_error, this);
-
- if (stream)
- {
- opj_stream_destroy(stream);
- }
-
- stream = opj_stream_create(dataSize, true);
- if (!stream)
- {
- return false;
- }
-
- opj_stream_set_user_data(stream, this, opj_free_user_data);
- opj_stream_set_user_data_length(stream, dataSize);
- opj_stream_set_read_function(stream, opj_read);
- opj_stream_set_write_function(stream, opj_write);
- opj_stream_set_skip_function(stream, opj_skip);
- opj_stream_set_seek_function(stream, opj_seek);
-
- buffer = data;
- size = dataSize;
- offset = 0;
-
- if (image)
- {
- opj_image_destroy(image);
- image = nullptr;
- }
-
- // needs to happen before opj_read_header and opj_decode...
- opj_set_decoded_resolution_factor(decoder, discard_level);
-
- // enable decoding partially loaded images
- opj_decoder_set_strict_mode(decoder, OPJ_FALSE);
-
- if (!opj_read_header(stream, decoder, &image))
- {
- return false;
- }
-
- // needs to happen before decode which may fail
- if (channels)
- {
- *channels = image->numcomps;
- }
-
- OPJ_BOOL decoded = opj_decode(decoder, stream, image);
-
- // count was zero. The latter is just a sanity check before we
- // dereference the array.
- if (!decoded || !image || !image->numcomps)
- {
- opj_end_decompress(decoder, stream);
- return false;
- }
-
- opj_end_decompress(decoder, stream);
-
- return true;
- }
-
- opj_image_t* getImage() { return image; }
-
-private:
- opj_dparameters_t parameters;
- opj_event_mgr_t event_mgr;
- opj_image_t* image = nullptr;
- opj_codec_t* decoder = nullptr;
- opj_stream_t* stream = nullptr;
- opj_codestream_info_v2_t* codestream_info = nullptr;
-};
-
-class JPEG2KEncode : public JPEG2KBase
-{
-public:
- const OPJ_UINT32 TILE_SIZE = 64 * 64 * 3;
-
- JPEG2KEncode(const char* comment_text_in, bool reversible)
- {
- memset(¶meters, 0, sizeof(opj_cparameters_t));
- memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
- event_mgr.error_handler = error_callback;
- event_mgr.warning_handler = warning_callback;
- event_mgr.info_handler = info_callback;
-
- opj_set_default_encoder_parameters(¶meters);
- parameters.cod_format = OPJ_CODEC_J2K;
- parameters.cp_disto_alloc = 1;
- parameters.max_cs_size = (1 << 15);
-
- if (reversible)
- {
- parameters.tcp_numlayers = 1;
- parameters.tcp_rates[0] = 1.0f;
- }
- else
- {
- parameters.tcp_numlayers = 5;
- parameters.tcp_rates[0] = 1920.0f;
- parameters.tcp_rates[1] = 960.0f;
- parameters.tcp_rates[2] = 480.0f;
- parameters.tcp_rates[3] = 120.0f;
- parameters.tcp_rates[4] = 30.0f;
- parameters.irreversible = 1;
- parameters.tcp_mct = 1;
- }
-
- if (comment_text)
- {
- free(comment_text);
- }
- comment_text = comment_text_in ? strdup(comment_text_in) : nullptr;
-
- parameters.cp_comment = comment_text ? comment_text : (char*)"no comment";
- llassert(parameters.cp_comment);
- }
-
- ~JPEG2KEncode()
- {
- if (encoder)
- {
- opj_destroy_codec(encoder);
- }
- encoder = nullptr;
-
- if (image)
- {
- opj_image_destroy(image);
- }
- image = nullptr;
-
- if (stream)
- {
- opj_stream_destroy(stream);
- }
- stream = nullptr;
-
- if (comment_text)
- {
- free(comment_text);
- }
- comment_text = nullptr;
- }
-
- bool encode(const LLImageRaw& rawImageIn, LLImageJ2C &compressedImageOut)
- {
- LLImageDataSharedLock lockIn(&rawImageIn);
- LLImageDataLock lockOut(&compressedImageOut);
-
- setImage(rawImageIn);
-
- encoder = opj_create_compress(OPJ_CODEC_J2K);
-
- parameters.tcp_mct = (image->numcomps >= 3) ? 1 : 0;
- parameters.cod_format = OPJ_CODEC_J2K;
- parameters.prog_order = OPJ_RLCP;
- parameters.cp_disto_alloc = 1;
-
- if (!opj_setup_encoder(encoder, ¶meters, image))
- {
- return false;
- }
-
- opj_set_info_handler(encoder, opj_info, this);
- opj_set_warning_handler(encoder, opj_warn, this);
- opj_set_error_handler(encoder, opj_error, this);
-
- U32 tile_count = (rawImageIn.getWidth() >> 6) * (rawImageIn.getHeight() >> 6);
- U32 data_size_guess = tile_count * TILE_SIZE;
-
- // will be freed in opj_free_user_data_write
- buffer = (U8*)ll_aligned_malloc_16(data_size_guess);
- size = data_size_guess;
- offset = 0;
-
- memset(buffer, 0, data_size_guess);
-
- if (stream)
- {
- opj_stream_destroy(stream);
- }
-
- stream = opj_stream_create(data_size_guess, false);
- if (!stream)
- {
- return false;
- }
-
- opj_stream_set_user_data(stream, this, opj_free_user_data_write);
- opj_stream_set_user_data_length(stream, data_size_guess);
- opj_stream_set_read_function(stream, opj_read);
- opj_stream_set_write_function(stream, opj_write);
- opj_stream_set_skip_function(stream, opj_skip);
- opj_stream_set_seek_function(stream, opj_seek);
-
- OPJ_BOOL started = opj_start_compress(encoder, image, stream);
-
- if (!started)
- {
- return false;
- }
-
- if (!opj_encode(encoder, stream))
- {
- return false;
- }
-
- OPJ_BOOL encoded = opj_end_compress(encoder, stream);
-
- // if we successfully encoded, then stream out the compressed data...
- if (encoded)
- {
- // "append" (set) the data we "streamed" (memcopied) for writing to the formatted image
- // with side-effect of setting the actually encoded size to same
- compressedImageOut.allocateData(offset);
- memcpy(compressedImageOut.getData(), buffer, offset);
- compressedImageOut.updateData(); // update width, height etc from header
- }
- return encoded;
- }
-
- void setImage(const LLImageRaw& raw)
- {
- opj_image_cmptparm_t cmptparm[MAX_ENCODED_DISCARD_LEVELS];
- memset(&cmptparm[0], 0, MAX_ENCODED_DISCARD_LEVELS * sizeof(opj_image_cmptparm_t));
-
- S32 numcomps = raw.getComponents();
- S32 width = raw.getWidth();
- S32 height = raw.getHeight();
-
- for (S32 c = 0; c < numcomps; c++)
- {
- cmptparm[c].prec = 8;
- cmptparm[c].bpp = 8;
- cmptparm[c].sgnd = 0;
- cmptparm[c].dx = parameters.subsampling_dx;
- cmptparm[c].dy = parameters.subsampling_dy;
- cmptparm[c].w = width;
- cmptparm[c].h = height;
- }
-
- image = opj_image_create(numcomps, &cmptparm[0], OPJ_CLRSPC_SRGB);
-
- image->x1 = width;
- image->y1 = height;
-
- const U8 *src_datap = raw.getData();
-
- S32 i = 0;
- for (S32 y = height - 1; y >= 0; y--)
- {
- for (S32 x = 0; x < width; x++)
- {
- const U8 *pixel = src_datap + (y*width + x) * numcomps;
- for (S32 c = 0; c < numcomps; c++)
- {
- image->comps[c].data[i] = *pixel;
- pixel++;
- }
- i++;
- }
- }
-
- // This likely works, but there seems to be an issue openjpeg side
- // check over after gixing that.
-
- // De-interleave to component plane data
- /*
- switch (numcomps)
- {
- case 0:
- default:
- break;
-
- case 1:
- {
- U32 rBitDepth = image->comps[0].bpp;
- U32 bytesPerPixel = rBitDepth >> 3;
- memcpy(image->comps[0].data, src, width * height * bytesPerPixel);
- }
- break;
-
- case 2:
- {
- U32 rBitDepth = image->comps[0].bpp;
- U32 gBitDepth = image->comps[1].bpp;
- U32 totalBitDepth = rBitDepth + gBitDepth;
- U32 bytesPerPixel = totalBitDepth >> 3;
- U32 stride = width * bytesPerPixel;
- U32 offset = 0;
- for (S32 y = height - 1; y >= 0; y--)
- {
- const U8* component = src + (y * stride);
- for (S32 x = 0; x < width; x++)
- {
- image->comps[0].data[offset] = *component++;
- image->comps[1].data[offset] = *component++;
- offset++;
- }
- }
- }
- break;
-
- case 3:
- {
- U32 rBitDepth = image->comps[0].bpp;
- U32 gBitDepth = image->comps[1].bpp;
- U32 bBitDepth = image->comps[2].bpp;
- U32 totalBitDepth = rBitDepth + gBitDepth + bBitDepth;
- U32 bytesPerPixel = totalBitDepth >> 3;
- U32 stride = width * bytesPerPixel;
- U32 offset = 0;
- for (S32 y = height - 1; y >= 0; y--)
- {
- const U8* component = src + (y * stride);
- for (S32 x = 0; x < width; x++)
- {
- image->comps[0].data[offset] = *component++;
- image->comps[1].data[offset] = *component++;
- image->comps[2].data[offset] = *component++;
- offset++;
- }
- }
- }
- break;
-
-
- case 4:
- {
- U32 rBitDepth = image->comps[0].bpp;
- U32 gBitDepth = image->comps[1].bpp;
- U32 bBitDepth = image->comps[2].bpp;
- U32 aBitDepth = image->comps[3].bpp;
-
- U32 totalBitDepth = rBitDepth + gBitDepth + bBitDepth + aBitDepth;
- U32 bytesPerPixel = totalBitDepth >> 3;
-
- U32 stride = width * bytesPerPixel;
- U32 offset = 0;
- for (S32 y = height - 1; y >= 0; y--)
- {
- const U8* component = src + (y * stride);
- for (S32 x = 0; x < width; x++)
- {
- image->comps[0].data[offset] = *component++;
- image->comps[1].data[offset] = *component++;
- image->comps[2].data[offset] = *component++;
- image->comps[3].data[offset] = *component++;
- offset++;
- }
- }
- }
- break;
- }*/
- }
-
- opj_image_t* getImage() { return image; }
-
-private:
- opj_cparameters_t parameters;
- opj_event_mgr_t event_mgr;
- opj_image_t* image = nullptr;
- opj_codec_t* encoder = nullptr;
- opj_stream_t* stream = nullptr;
- char* comment_text = nullptr;
-};
-
-
-LLImageJ2COJ::LLImageJ2COJ()
- : LLImageJ2CImpl()
-{
-}
-
-
-LLImageJ2COJ::~LLImageJ2COJ()
-{
-}
-
-bool LLImageJ2COJ::initDecode(LLImageJ2C &base, LLImageRaw &raw_image, int discard_level, int* region)
-{
- base.mDiscardLevel = discard_level;
- return false;
-}
-
-bool LLImageJ2COJ::initEncode(LLImageJ2C &base, LLImageRaw &raw_image, int blocks_size, int precincts_size, int levels)
-{
- LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
- // No specific implementation for this method in the OpenJpeg case
- return false;
-}
-
-bool LLImageJ2COJ::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decode_time, S32 first_channel, S32 max_channel_count)
-{
- LLImageDataLock lockIn(&base);
- LLImageDataLock lockOut(&raw_image);
-
- JPEG2KDecode decoder(0);
-
- U32 image_channels = 0;
- S32 data_size = base.getDataSize();
- S32 max_bytes = (base.getMaxBytes() ? base.getMaxBytes() : data_size);
- bool decoded = decoder.decode(base.getData(), max_bytes, &image_channels, base.mDiscardLevel);
-
- // set correct channel count early so failed decodes don't miss it...
- S32 channels = (S32)image_channels - first_channel;
- channels = llmin(channels, max_channel_count);
-
- if (!decoded)
- {
- // reset the channel count if necessary
- if (raw_image.getComponents() != channels)
- {
- raw_image.resize(raw_image.getWidth(), raw_image.getHeight(), S8(channels));
- }
-
- LL_DEBUGS("Texture") << "ERROR -> decodeImpl: failed to decode image!" << LL_ENDL;
- return true; // done
- }
-
- opj_image_t *image = decoder.getImage();
-
- // Component buffers are allocated in an image width by height buffer.
- // The image placed in that buffer is ceil(width/2^factor) by
- // ceil(height/2^factor) and if the factor isn't zero it will be at the
- // top left of the buffer with black filled in the rest of the pixels.
- // It is integer math so the formula is written in ceildivpo2.
- // (Assuming all the components have the same width, height and
- // factor.)
- U32 comp_width = image->comps[0].w; // leave this unshifted by 'f' discard factor, the strides are always for the full buffer width
- U32 f = image->comps[0].factor;
-
- // do size the texture to the mem we'll acrually use...
- U32 width = image->comps[0].w;
- U32 height = image->comps[0].h;
-
- raw_image.resize(U16(width), U16(height), S8(channels));
-
- U8 *rawp = raw_image.getData();
-
- // first_channel is what channel to start copying from
- // dest is what channel to copy to. first_channel comes from the
- // argument, dest always starts writing at channel zero.
- for (S32 comp = first_channel, dest = 0; comp < first_channel + channels; comp++, dest++)
- {
- llassert(image->comps[comp].data);
- if (image->comps[comp].data)
- {
- S32 offset = dest;
- for (S32 y = (height - 1); y >= 0; y--)
- {
- for (S32 x = 0; x < width; x++)
- {
- rawp[offset] = image->comps[comp].data[y*comp_width + x];
- offset += channels;
- }
- }
- }
- else // Some rare OpenJPEG versions have this bug.
- {
- LL_DEBUGS("Texture") << "ERROR -> decodeImpl: failed! (OpenJPEG bug)" << LL_ENDL;
- }
- }
-
- base.setDiscardLevel(f);
-
- return true; // done
-}
-
-
-bool LLImageJ2COJ::encodeImpl(LLImageJ2C &base, const LLImageRaw &raw_image, const char* comment_text, F32 encode_time, bool reversible)
-{
- JPEG2KEncode encode(comment_text, reversible);
- bool encoded = encode.encode(raw_image, base);
- if (encoded)
- {
- LL_WARNS() << "Openjpeg encoding implementation isn't complete, returning false" << LL_ENDL;
- }
- return encoded;
- //return false;
-}
-
-bool LLImageJ2COJ::getMetadata(LLImageJ2C &base)
-{
- LLImageDataLock lock(&base);
-
- JPEG2KDecode decode(0);
-
- S32 width = 0;
- S32 height = 0;
- S32 components = 0;
- S32 discard_level = 0;
-
- U32 dataSize = base.getDataSize();
- U8* data = base.getData();
- bool header_read = decode.readHeader(data, dataSize, width, height, components, discard_level);
- if (!header_read)
- {
- return false;
- }
-
- base.mDiscardLevel = discard_level;
- base.setSize(width, height, components);
- return true;
-}
+/** + * @file llimagej2coj.cpp + * @brief This is an implementation of JPEG2000 encode/decode using OpenJPEG. + * + * $LicenseInfo:firstyear=2006&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2010, Linden Research, Inc. + * + * This library 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; + * version 2.1 of the License only. + * + * This library 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 this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + +#include "linden_common.h" +#include "llimagej2coj.h" + +// this is defined so that we get static linking. +#include "openjpeg.h" +#include "event.h" +#include "cio.h" + +#define MAX_ENCODED_DISCARD_LEVELS 5 + +// Factory function: see declaration in llimagej2c.cpp +LLImageJ2CImpl* fallbackCreateLLImageJ2CImpl() +{ + return new LLImageJ2COJ(); +} + +std::string LLImageJ2COJ::getEngineInfo() const +{ +#ifdef OPENJPEG_VERSION + return std::string("OpenJPEG: " OPENJPEG_VERSION ", Runtime: ") + + opj_version(); +#else + return std::string("OpenJPEG runtime: ") + opj_version(); +#endif +} + +// Return string from message, eliminating final \n if present +static std::string chomp(const char* msg) +{ + // stomp trailing \n + std::string message = msg; + if (!message.empty()) + { + size_t last = message.size() - 1; + if (message[last] == '\n') + { + message.resize(last); + } +} + return message; +} + +/** +sample error callback expecting a LLFILE* client object +*/ +void error_callback(const char* msg, void*) +{ + LL_DEBUGS() << "LLImageJ2COJ: " << chomp(msg) << LL_ENDL; +} +/** +sample warning callback expecting a LLFILE* client object +*/ +void warning_callback(const char* msg, void*) +{ + LL_DEBUGS() << "LLImageJ2COJ: " << chomp(msg) << LL_ENDL; +} +/** +sample debug callback expecting no client object +*/ +void info_callback(const char* msg, void*) +{ + LL_DEBUGS() << "LLImageJ2COJ: " << chomp(msg) << LL_ENDL; +} + +// Divide a by 2 to the power of b and round upwards +int ceildivpow2(int a, int b) +{ + return (a + (1 << b) - 1) >> b; +} + +class JPEG2KBase +{ +public: + JPEG2KBase() {} + + U8* buffer = nullptr; + OPJ_SIZE_T size = 0; + OPJ_OFF_T offset = 0; +}; + +#define WANT_VERBOSE_OPJ_SPAM LL_DEBUG + +static void opj_info(const char* msg, void* user_data) +{ + llassert(user_data); +#if WANT_VERBOSE_OPJ_SPAM + LL_INFOS("OpenJPEG") << msg << LL_ENDL; +#endif +} + +static void opj_warn(const char* msg, void* user_data) +{ + llassert(user_data); +#if WANT_VERBOSE_OPJ_SPAM + LL_WARNS("OpenJPEG") << msg << LL_ENDL; +#endif +} + +static void opj_error(const char* msg, void* user_data) +{ + llassert(user_data); +#if WANT_VERBOSE_OPJ_SPAM + LL_WARNS("OpenJPEG") << msg << LL_ENDL; +#endif +} + +static OPJ_SIZE_T opj_read(void * buffer, OPJ_SIZE_T bytes, void* user_data) +{ + llassert(user_data); + JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data); + OPJ_SIZE_T remainder = (jpeg_codec->size - jpeg_codec->offset); + if (remainder <= 0) + { + jpeg_codec->offset = jpeg_codec->size; + // Indicate end of stream (hacky?) + return (OPJ_OFF_T)-1; + } + OPJ_SIZE_T to_read = llclamp(U32(bytes), U32(0), U32(remainder)); + memcpy(buffer, jpeg_codec->buffer + jpeg_codec->offset, to_read); + jpeg_codec->offset += to_read; + return to_read; +} + +static OPJ_SIZE_T opj_write(void * buffer, OPJ_SIZE_T bytes, void* user_data) +{ + llassert(user_data); + JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data); + OPJ_SIZE_T remainder = jpeg_codec->size - jpeg_codec->offset; + if (remainder < bytes) + { + OPJ_SIZE_T new_size = jpeg_codec->size + (bytes - remainder); + U8* new_buffer = (U8*)ll_aligned_malloc_16(new_size); + memcpy(new_buffer, jpeg_codec->buffer, jpeg_codec->offset); + U8* old_buffer = jpeg_codec->buffer; + jpeg_codec->buffer = new_buffer; + ll_aligned_free_16(old_buffer); + jpeg_codec->size = new_size; + } + memcpy(jpeg_codec->buffer + jpeg_codec->offset, buffer, bytes); + jpeg_codec->offset += bytes; + return bytes; +} + +static OPJ_OFF_T opj_skip(OPJ_OFF_T bytes, void* user_data) +{ + JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data); + jpeg_codec->offset += bytes; + + if (jpeg_codec->offset > jpeg_codec->size) + { + jpeg_codec->offset = jpeg_codec->size; + // Indicate end of stream + return (OPJ_OFF_T)-1; + } + + if (jpeg_codec->offset < 0) + { + // Shouldn't be possible? + jpeg_codec->offset = 0; + return (OPJ_OFF_T)-1; + } + + return bytes; +} + +static OPJ_BOOL opj_seek(OPJ_OFF_T bytes, void * user_data) +{ + JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data); + jpeg_codec->offset = bytes; + jpeg_codec->offset = llclamp(U32(jpeg_codec->offset), U32(0), U32(jpeg_codec->size)); + return OPJ_TRUE; +} + +static void opj_free_user_data(void * user_data) +{ + JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data); + // Don't free, data is managed externally + jpeg_codec->buffer = nullptr; + jpeg_codec->size = 0; + jpeg_codec->offset = 0; +} + +static void opj_free_user_data_write(void * user_data) +{ + JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data); + // Free, data was allocated here + ll_aligned_free_16(jpeg_codec->buffer); + jpeg_codec->buffer = nullptr; + jpeg_codec->size = 0; + jpeg_codec->offset = 0; +} + +class JPEG2KDecode : public JPEG2KBase +{ +public: + + JPEG2KDecode(S8 discardLevel) + { + memset(&event_mgr, 0, sizeof(opj_event_mgr_t)); + memset(¶meters, 0, sizeof(opj_dparameters_t)); + event_mgr.error_handler = error_callback; + event_mgr.warning_handler = warning_callback; + event_mgr.info_handler = info_callback; + opj_set_default_decoder_parameters(¶meters); + parameters.cp_reduce = discardLevel; + } + + ~JPEG2KDecode() + { + if (decoder) + { + opj_destroy_codec(decoder); + } + decoder = nullptr; + + if (image) + { + opj_image_destroy(image); + } + image = nullptr; + + if (stream) + { + opj_stream_destroy(stream); + } + stream = nullptr; + + if (codestream_info) + { + opj_destroy_cstr_info(&codestream_info); + } + codestream_info = nullptr; + } + + bool readHeader( + U8* data, + U32 dataSize, + S32& widthOut, + S32& heightOut, + S32& components, + S32& discard_level) + { + parameters.flags |= OPJ_DPARAMETERS_DUMP_FLAG; + + decoder = opj_create_decompress(OPJ_CODEC_J2K); + + if (!opj_setup_decoder(decoder, ¶meters)) + { + return false; + } + + if (stream) + { + opj_stream_destroy(stream); + } + + stream = opj_stream_create(dataSize, true); + if (!stream) + { + return false; + } + + opj_stream_set_user_data(stream, this, opj_free_user_data); + opj_stream_set_user_data_length(stream, dataSize); + opj_stream_set_read_function(stream, opj_read); + opj_stream_set_write_function(stream, opj_write); + opj_stream_set_skip_function(stream, opj_skip); + opj_stream_set_seek_function(stream, opj_seek); + + buffer = data; + size = dataSize; + offset = 0; + + // enable decoding partially loaded images + opj_decoder_set_strict_mode(decoder, OPJ_FALSE); + + /* Read the main header of the codestream and if necessary the JP2 boxes*/ + if (!opj_read_header((opj_stream_t*)stream, decoder, &image)) + { + return false; + } + + codestream_info = opj_get_cstr_info(decoder); + + if (!codestream_info) + { + return false; + } + + U32 tileDimX = codestream_info->tdx; + U32 tileDimY = codestream_info->tdy; + U32 tilesW = codestream_info->tw; + U32 tilesH = codestream_info->th; + + widthOut = S32(tilesW * tileDimX); + heightOut = S32(tilesH * tileDimY); + components = codestream_info->nbcomps; + + discard_level = 0; + while (tilesW > 1 && tilesH > 1 && discard_level < MAX_DISCARD_LEVEL) + { + discard_level++; + tilesW >>= 1; + tilesH >>= 1; + } + + return true; + } + + bool decode(U8* data, U32 dataSize, U32* channels, U8 discard_level) + { + parameters.flags &= ~OPJ_DPARAMETERS_DUMP_FLAG; + + decoder = opj_create_decompress(OPJ_CODEC_J2K); + opj_setup_decoder(decoder, ¶meters); + + opj_set_info_handler(decoder, opj_info, this); + opj_set_warning_handler(decoder, opj_warn, this); + opj_set_error_handler(decoder, opj_error, this); + + if (stream) + { + opj_stream_destroy(stream); + } + + stream = opj_stream_create(dataSize, true); + if (!stream) + { + return false; + } + + opj_stream_set_user_data(stream, this, opj_free_user_data); + opj_stream_set_user_data_length(stream, dataSize); + opj_stream_set_read_function(stream, opj_read); + opj_stream_set_write_function(stream, opj_write); + opj_stream_set_skip_function(stream, opj_skip); + opj_stream_set_seek_function(stream, opj_seek); + + buffer = data; + size = dataSize; + offset = 0; + + if (image) + { + opj_image_destroy(image); + image = nullptr; + } + + // needs to happen before opj_read_header and opj_decode... + opj_set_decoded_resolution_factor(decoder, discard_level); + + // enable decoding partially loaded images + opj_decoder_set_strict_mode(decoder, OPJ_FALSE); + + if (!opj_read_header(stream, decoder, &image)) + { + return false; + } + + // needs to happen before decode which may fail + if (channels) + { + *channels = image->numcomps; + } + + OPJ_BOOL decoded = opj_decode(decoder, stream, image); + + // count was zero. The latter is just a sanity check before we + // dereference the array. + if (!decoded || !image || !image->numcomps) + { + opj_end_decompress(decoder, stream); + return false; + } + + opj_end_decompress(decoder, stream); + + return true; + } + + opj_image_t* getImage() { return image; } + +private: + opj_dparameters_t parameters; + opj_event_mgr_t event_mgr; + opj_image_t* image = nullptr; + opj_codec_t* decoder = nullptr; + opj_stream_t* stream = nullptr; + opj_codestream_info_v2_t* codestream_info = nullptr; +}; + +class JPEG2KEncode : public JPEG2KBase +{ +public: + const OPJ_UINT32 TILE_SIZE = 64 * 64 * 3; + + JPEG2KEncode(const char* comment_text_in, bool reversible) + { + memset(¶meters, 0, sizeof(opj_cparameters_t)); + memset(&event_mgr, 0, sizeof(opj_event_mgr_t)); + event_mgr.error_handler = error_callback; + event_mgr.warning_handler = warning_callback; + event_mgr.info_handler = info_callback; + + opj_set_default_encoder_parameters(¶meters); + parameters.cod_format = OPJ_CODEC_J2K; + parameters.cp_disto_alloc = 1; + parameters.max_cs_size = (1 << 15); + + if (reversible) + { + parameters.tcp_numlayers = 1; + parameters.tcp_rates[0] = 1.0f; + } + else + { + parameters.tcp_numlayers = 5; + parameters.tcp_rates[0] = 1920.0f; + parameters.tcp_rates[1] = 960.0f; + parameters.tcp_rates[2] = 480.0f; + parameters.tcp_rates[3] = 120.0f; + parameters.tcp_rates[4] = 30.0f; + parameters.irreversible = 1; + parameters.tcp_mct = 1; + } + + if (comment_text) + { + free(comment_text); + } + comment_text = comment_text_in ? strdup(comment_text_in) : nullptr; + + parameters.cp_comment = comment_text ? comment_text : (char*)"no comment"; + llassert(parameters.cp_comment); + } + + ~JPEG2KEncode() + { + if (encoder) + { + opj_destroy_codec(encoder); + } + encoder = nullptr; + + if (image) + { + opj_image_destroy(image); + } + image = nullptr; + + if (stream) + { + opj_stream_destroy(stream); + } + stream = nullptr; + + if (comment_text) + { + free(comment_text); + } + comment_text = nullptr; + } + + bool encode(const LLImageRaw& rawImageIn, LLImageJ2C &compressedImageOut) + { + LLImageDataSharedLock lockIn(&rawImageIn); + LLImageDataLock lockOut(&compressedImageOut); + + setImage(rawImageIn); + + encoder = opj_create_compress(OPJ_CODEC_J2K); + + parameters.tcp_mct = (image->numcomps >= 3) ? 1 : 0; + parameters.cod_format = OPJ_CODEC_J2K; + parameters.prog_order = OPJ_RLCP; + parameters.cp_disto_alloc = 1; + + if (!opj_setup_encoder(encoder, ¶meters, image)) + { + return false; + } + + opj_set_info_handler(encoder, opj_info, this); + opj_set_warning_handler(encoder, opj_warn, this); + opj_set_error_handler(encoder, opj_error, this); + + U32 tile_count = (rawImageIn.getWidth() >> 6) * (rawImageIn.getHeight() >> 6); + U32 data_size_guess = tile_count * TILE_SIZE; + + // will be freed in opj_free_user_data_write + buffer = (U8*)ll_aligned_malloc_16(data_size_guess); + size = data_size_guess; + offset = 0; + + memset(buffer, 0, data_size_guess); + + if (stream) + { + opj_stream_destroy(stream); + } + + stream = opj_stream_create(data_size_guess, false); + if (!stream) + { + return false; + } + + opj_stream_set_user_data(stream, this, opj_free_user_data_write); + opj_stream_set_user_data_length(stream, data_size_guess); + opj_stream_set_read_function(stream, opj_read); + opj_stream_set_write_function(stream, opj_write); + opj_stream_set_skip_function(stream, opj_skip); + opj_stream_set_seek_function(stream, opj_seek); + + OPJ_BOOL started = opj_start_compress(encoder, image, stream); + + if (!started) + { + return false; + } + + if (!opj_encode(encoder, stream)) + { + return false; + } + + OPJ_BOOL encoded = opj_end_compress(encoder, stream); + + // if we successfully encoded, then stream out the compressed data... + if (encoded) + { + // "append" (set) the data we "streamed" (memcopied) for writing to the formatted image + // with side-effect of setting the actually encoded size to same + compressedImageOut.allocateData(offset); + memcpy(compressedImageOut.getData(), buffer, offset); + compressedImageOut.updateData(); // update width, height etc from header + } + return encoded; + } + + void setImage(const LLImageRaw& raw) + { + opj_image_cmptparm_t cmptparm[MAX_ENCODED_DISCARD_LEVELS]; + memset(&cmptparm[0], 0, MAX_ENCODED_DISCARD_LEVELS * sizeof(opj_image_cmptparm_t)); + + S32 numcomps = raw.getComponents(); + S32 width = raw.getWidth(); + S32 height = raw.getHeight(); + + for (S32 c = 0; c < numcomps; c++) + { + cmptparm[c].prec = 8; + cmptparm[c].bpp = 8; + cmptparm[c].sgnd = 0; + cmptparm[c].dx = parameters.subsampling_dx; + cmptparm[c].dy = parameters.subsampling_dy; + cmptparm[c].w = width; + cmptparm[c].h = height; + } + + image = opj_image_create(numcomps, &cmptparm[0], OPJ_CLRSPC_SRGB); + + image->x1 = width; + image->y1 = height; + + const U8 *src_datap = raw.getData(); + + S32 i = 0; + for (S32 y = height - 1; y >= 0; y--) + { + for (S32 x = 0; x < width; x++) + { + const U8 *pixel = src_datap + (y*width + x) * numcomps; + for (S32 c = 0; c < numcomps; c++) + { + image->comps[c].data[i] = *pixel; + pixel++; + } + i++; + } + } + + // This likely works, but there seems to be an issue openjpeg side + // check over after gixing that. + + // De-interleave to component plane data + /* + switch (numcomps) + { + case 0: + default: + break; + + case 1: + { + U32 rBitDepth = image->comps[0].bpp; + U32 bytesPerPixel = rBitDepth >> 3; + memcpy(image->comps[0].data, src, width * height * bytesPerPixel); + } + break; + + case 2: + { + U32 rBitDepth = image->comps[0].bpp; + U32 gBitDepth = image->comps[1].bpp; + U32 totalBitDepth = rBitDepth + gBitDepth; + U32 bytesPerPixel = totalBitDepth >> 3; + U32 stride = width * bytesPerPixel; + U32 offset = 0; + for (S32 y = height - 1; y >= 0; y--) + { + const U8* component = src + (y * stride); + for (S32 x = 0; x < width; x++) + { + image->comps[0].data[offset] = *component++; + image->comps[1].data[offset] = *component++; + offset++; + } + } + } + break; + + case 3: + { + U32 rBitDepth = image->comps[0].bpp; + U32 gBitDepth = image->comps[1].bpp; + U32 bBitDepth = image->comps[2].bpp; + U32 totalBitDepth = rBitDepth + gBitDepth + bBitDepth; + U32 bytesPerPixel = totalBitDepth >> 3; + U32 stride = width * bytesPerPixel; + U32 offset = 0; + for (S32 y = height - 1; y >= 0; y--) + { + const U8* component = src + (y * stride); + for (S32 x = 0; x < width; x++) + { + image->comps[0].data[offset] = *component++; + image->comps[1].data[offset] = *component++; + image->comps[2].data[offset] = *component++; + offset++; + } + } + } + break; + + + case 4: + { + U32 rBitDepth = image->comps[0].bpp; + U32 gBitDepth = image->comps[1].bpp; + U32 bBitDepth = image->comps[2].bpp; + U32 aBitDepth = image->comps[3].bpp; + + U32 totalBitDepth = rBitDepth + gBitDepth + bBitDepth + aBitDepth; + U32 bytesPerPixel = totalBitDepth >> 3; + + U32 stride = width * bytesPerPixel; + U32 offset = 0; + for (S32 y = height - 1; y >= 0; y--) + { + const U8* component = src + (y * stride); + for (S32 x = 0; x < width; x++) + { + image->comps[0].data[offset] = *component++; + image->comps[1].data[offset] = *component++; + image->comps[2].data[offset] = *component++; + image->comps[3].data[offset] = *component++; + offset++; + } + } + } + break; + }*/ + } + + opj_image_t* getImage() { return image; } + +private: + opj_cparameters_t parameters; + opj_event_mgr_t event_mgr; + opj_image_t* image = nullptr; + opj_codec_t* encoder = nullptr; + opj_stream_t* stream = nullptr; + char* comment_text = nullptr; +}; + + +LLImageJ2COJ::LLImageJ2COJ() + : LLImageJ2CImpl() +{ +} + + +LLImageJ2COJ::~LLImageJ2COJ() +{ +} + +bool LLImageJ2COJ::initDecode(LLImageJ2C &base, LLImageRaw &raw_image, int discard_level, int* region) +{ + base.mDiscardLevel = discard_level; + return false; +} + +bool LLImageJ2COJ::initEncode(LLImageJ2C &base, LLImageRaw &raw_image, int blocks_size, int precincts_size, int levels) +{ + LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE; + // No specific implementation for this method in the OpenJpeg case + return false; +} + +bool LLImageJ2COJ::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decode_time, S32 first_channel, S32 max_channel_count) +{ + LLImageDataLock lockIn(&base); + LLImageDataLock lockOut(&raw_image); + + JPEG2KDecode decoder(0); + + U32 image_channels = 0; + S32 data_size = base.getDataSize(); + S32 max_bytes = (base.getMaxBytes() ? base.getMaxBytes() : data_size); + bool decoded = decoder.decode(base.getData(), max_bytes, &image_channels, base.mDiscardLevel); + + // set correct channel count early so failed decodes don't miss it... + S32 channels = (S32)image_channels - first_channel; + channels = llmin(channels, max_channel_count); + + if (!decoded) + { + // reset the channel count if necessary + if (raw_image.getComponents() != channels) + { + raw_image.resize(raw_image.getWidth(), raw_image.getHeight(), S8(channels)); + } + + LL_DEBUGS("Texture") << "ERROR -> decodeImpl: failed to decode image!" << LL_ENDL; + return true; // done + } + + opj_image_t *image = decoder.getImage(); + + // Component buffers are allocated in an image width by height buffer. + // The image placed in that buffer is ceil(width/2^factor) by + // ceil(height/2^factor) and if the factor isn't zero it will be at the + // top left of the buffer with black filled in the rest of the pixels. + // It is integer math so the formula is written in ceildivpo2. + // (Assuming all the components have the same width, height and + // factor.) + U32 comp_width = image->comps[0].w; // leave this unshifted by 'f' discard factor, the strides are always for the full buffer width + U32 f = image->comps[0].factor; + + // do size the texture to the mem we'll acrually use... + U32 width = image->comps[0].w; + U32 height = image->comps[0].h; + + raw_image.resize(U16(width), U16(height), S8(channels)); + + U8 *rawp = raw_image.getData(); + + // first_channel is what channel to start copying from + // dest is what channel to copy to. first_channel comes from the + // argument, dest always starts writing at channel zero. + for (S32 comp = first_channel, dest = 0; comp < first_channel + channels; comp++, dest++) + { + llassert(image->comps[comp].data); + if (image->comps[comp].data) + { + S32 offset = dest; + for (S32 y = (height - 1); y >= 0; y--) + { + for (S32 x = 0; x < width; x++) + { + rawp[offset] = image->comps[comp].data[y*comp_width + x]; + offset += channels; + } + } + } + else // Some rare OpenJPEG versions have this bug. + { + LL_DEBUGS("Texture") << "ERROR -> decodeImpl: failed! (OpenJPEG bug)" << LL_ENDL; + } + } + + base.setDiscardLevel(f); + + return true; // done +} + + +bool LLImageJ2COJ::encodeImpl(LLImageJ2C &base, const LLImageRaw &raw_image, const char* comment_text, F32 encode_time, bool reversible) +{ + JPEG2KEncode encode(comment_text, reversible); + bool encoded = encode.encode(raw_image, base); + if (encoded) + { + LL_WARNS() << "Openjpeg encoding implementation isn't complete, returning false" << LL_ENDL; + } + return encoded; + //return false; +} + +bool LLImageJ2COJ::getMetadata(LLImageJ2C &base) +{ + LLImageDataLock lock(&base); + + JPEG2KDecode decode(0); + + S32 width = 0; + S32 height = 0; + S32 components = 0; + S32 discard_level = 0; + + U32 dataSize = base.getDataSize(); + U8* data = base.getData(); + bool header_read = decode.readHeader(data, dataSize, width, height, components, discard_level); + if (!header_read) + { + return false; + } + + base.mDiscardLevel = discard_level; + base.setSize(width, height, components); + return true; +} |