| /* |
| * 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 "src/images/SkJPEGWriteUtility.h" |
| |
| #include "include/core/SkStream.h" |
| #include "include/private/SkTArray.h" |
| #include "src/codec/SkJpegPriv.h" |
| |
| #include <csetjmp> |
| #include <cstddef> |
| |
| extern "C" { |
| #include "jerror.h" |
| #include "jmorecfg.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); |
| } |