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/*
* Copyright 2010 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkJPEGWriteUtility.h"
///////////////////////////////////////////////////////////////////////////////
static void sk_init_destination(j_compress_ptr cinfo) {
skjpeg_destination_mgr* dest = (skjpeg_destination_mgr*)cinfo->dest;
dest->next_output_byte = dest->fBuffer;
dest->free_in_buffer = skjpeg_destination_mgr::kBufferSize;
}
static boolean sk_empty_output_buffer(j_compress_ptr cinfo) {
skjpeg_destination_mgr* dest = (skjpeg_destination_mgr*)cinfo->dest;
// if (!dest->fStream->write(dest->fBuffer, skjpeg_destination_mgr::kBufferSize - dest->free_in_buffer))
if (!dest->fStream->write(dest->fBuffer,
skjpeg_destination_mgr::kBufferSize)) {
ERREXIT(cinfo, JERR_FILE_WRITE);
return false;
}
dest->next_output_byte = dest->fBuffer;
dest->free_in_buffer = skjpeg_destination_mgr::kBufferSize;
return TRUE;
}
static void sk_term_destination (j_compress_ptr cinfo) {
skjpeg_destination_mgr* dest = (skjpeg_destination_mgr*)cinfo->dest;
size_t size = skjpeg_destination_mgr::kBufferSize - dest->free_in_buffer;
if (size > 0) {
if (!dest->fStream->write(dest->fBuffer, size)) {
ERREXIT(cinfo, JERR_FILE_WRITE);
return;
}
}
dest->fStream->flush();
}
skjpeg_destination_mgr::skjpeg_destination_mgr(SkWStream* stream)
: fStream(stream) {
this->init_destination = sk_init_destination;
this->empty_output_buffer = sk_empty_output_buffer;
this->term_destination = sk_term_destination;
}
void skjpeg_error_exit(j_common_ptr cinfo) {
skjpeg_error_mgr* error = (skjpeg_error_mgr*)cinfo->err;
(*error->output_message) (cinfo);
/* Let the memory manager delete any temp files before we die */
jpeg_destroy(cinfo);
if (error->fJmpBufStack.empty()) {
SK_ABORT("JPEG error with no jmp_buf set.");
}
longjmp(*error->fJmpBufStack.back(), -1);
}
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