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Diffstat (limited to 'third_party/libopenjpeg20/cio.c')
| -rw-r--r-- | third_party/libopenjpeg20/cio.c | 644 |
1 files changed, 0 insertions, 644 deletions
diff --git a/third_party/libopenjpeg20/cio.c b/third_party/libopenjpeg20/cio.c deleted file mode 100644 index c455bf7711..0000000000 --- a/third_party/libopenjpeg20/cio.c +++ /dev/null @@ -1,644 +0,0 @@ -/* - * The copyright in this software is being made available under the 2-clauses - * BSD License, included below. This software may be subject to other third - * party and contributor rights, including patent rights, and no such rights - * are granted under this license. - * - * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium - * Copyright (c) 2002-2014, Professor Benoit Macq - * Copyright (c) 2001-2003, David Janssens - * Copyright (c) 2002-2003, Yannick Verschueren - * Copyright (c) 2003-2007, Francois-Olivier Devaux - * Copyright (c) 2003-2014, Antonin Descampe - * Copyright (c) 2005, Herve Drolon, FreeImage Team - * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR - * Copyright (c) 2012, CS Systemes d'Information, France - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include "opj_includes.h" - -/* ----------------------------------------------------------------------- */ - - -/* ----------------------------------------------------------------------- */ - -void opj_write_bytes_BE (OPJ_BYTE * p_buffer, OPJ_UINT32 p_value, OPJ_UINT32 p_nb_bytes) -{ - const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value) + p_nb_bytes; - - assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); - - memcpy(p_buffer,l_data_ptr,p_nb_bytes); -} - -void opj_write_bytes_LE (OPJ_BYTE * p_buffer, OPJ_UINT32 p_value, OPJ_UINT32 p_nb_bytes) -{ - const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value) + p_nb_bytes - 1; - OPJ_UINT32 i; - - assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); - - for (i=0;i<p_nb_bytes;++i) { - *(p_buffer++) = *(l_data_ptr--); - } -} - -void opj_read_bytes_BE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value, OPJ_UINT32 p_nb_bytes) -{ - OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value); - - assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); - - *p_value = 0; - memcpy(l_data_ptr+4-p_nb_bytes,p_buffer,p_nb_bytes); -} - -void opj_read_bytes_LE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value, OPJ_UINT32 p_nb_bytes) -{ - OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value) + p_nb_bytes-1; - OPJ_UINT32 i; - - assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); - - *p_value = 0; - for (i=0;i<p_nb_bytes;++i) { - *(l_data_ptr--) = *(p_buffer++); - } -} - -void opj_write_double_BE(OPJ_BYTE * p_buffer, OPJ_FLOAT64 p_value) -{ - const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value); - memcpy(p_buffer,l_data_ptr,sizeof(OPJ_FLOAT64)); -} - -void opj_write_double_LE(OPJ_BYTE * p_buffer, OPJ_FLOAT64 p_value) -{ - const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value) + sizeof(OPJ_FLOAT64) - 1; - OPJ_UINT32 i; - for (i=0;i<sizeof(OPJ_FLOAT64);++i) { - *(p_buffer++) = *(l_data_ptr--); - } -} - -void opj_read_double_BE(const OPJ_BYTE * p_buffer, OPJ_FLOAT64 * p_value) -{ - OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value); - memcpy(l_data_ptr,p_buffer,sizeof(OPJ_FLOAT64)); -} - -void opj_read_double_LE(const OPJ_BYTE * p_buffer, OPJ_FLOAT64 * p_value) -{ - OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value) + sizeof(OPJ_FLOAT64)-1; - OPJ_UINT32 i; - for (i=0;i<sizeof(OPJ_FLOAT64);++i) { - *(l_data_ptr--) = *(p_buffer++); - } -} - -void opj_write_float_BE(OPJ_BYTE * p_buffer, OPJ_FLOAT32 p_value) -{ - const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value); - memcpy(p_buffer,l_data_ptr,sizeof(OPJ_FLOAT32)); -} - -void opj_write_float_LE(OPJ_BYTE * p_buffer, OPJ_FLOAT32 p_value) -{ - const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value) + sizeof(OPJ_FLOAT32) - 1; - OPJ_UINT32 i; - for (i=0;i<sizeof(OPJ_FLOAT32);++i) { - *(p_buffer++) = *(l_data_ptr--); - } -} - -void opj_read_float_BE(const OPJ_BYTE * p_buffer, OPJ_FLOAT32 * p_value) -{ - OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value); - memcpy(l_data_ptr,p_buffer,sizeof(OPJ_FLOAT32)); -} - -void opj_read_float_LE(const OPJ_BYTE * p_buffer, OPJ_FLOAT32 * p_value) -{ - OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value) + sizeof(OPJ_FLOAT32)-1; - OPJ_UINT32 i; - for (i=0;i<sizeof(OPJ_FLOAT32);++i) { - *(l_data_ptr--) = *(p_buffer++); - } -} - -opj_stream_t* OPJ_CALLCONV opj_stream_create(OPJ_SIZE_T p_buffer_size,OPJ_BOOL l_is_input) -{ - opj_stream_private_t * l_stream = 00; - l_stream = (opj_stream_private_t*) opj_calloc(1,sizeof(opj_stream_private_t)); - if (! l_stream) { - return 00; - } - - l_stream->m_buffer_size = p_buffer_size; - l_stream->m_stored_data = (OPJ_BYTE *) opj_malloc(p_buffer_size); - if (! l_stream->m_stored_data) { - opj_free(l_stream); - return 00; - } - - l_stream->m_current_data = l_stream->m_stored_data; - - if (l_is_input) { - l_stream->m_status |= opj_stream_e_input; - l_stream->m_opj_skip = opj_stream_read_skip; - l_stream->m_opj_seek = opj_stream_read_seek; - } - else { - l_stream->m_status |= opj_stream_e_output; - l_stream->m_opj_skip = opj_stream_write_skip; - l_stream->m_opj_seek = opj_stream_write_seek; - } - - l_stream->m_read_fn = opj_stream_default_read; - l_stream->m_write_fn = opj_stream_default_write; - l_stream->m_skip_fn = opj_stream_default_skip; - l_stream->m_seek_fn = opj_stream_default_seek; - - return (opj_stream_t *) l_stream; -} - -opj_stream_t* OPJ_CALLCONV opj_stream_default_create(OPJ_BOOL l_is_input) -{ - return opj_stream_create(OPJ_J2K_STREAM_CHUNK_SIZE,l_is_input); -} - -void OPJ_CALLCONV opj_stream_destroy(opj_stream_t* p_stream) -{ - opj_stream_private_t* l_stream = (opj_stream_private_t*) p_stream; - - if (l_stream) { - if (l_stream->m_free_user_data_fn) { - l_stream->m_free_user_data_fn(l_stream->m_user_data); - } - opj_free(l_stream->m_stored_data); - l_stream->m_stored_data = 00; - opj_free(l_stream); - } -} - -void OPJ_CALLCONV opj_stream_set_read_function(opj_stream_t* p_stream, opj_stream_read_fn p_function) -{ - opj_stream_private_t* l_stream = (opj_stream_private_t*) p_stream; - - if ((!l_stream) || (! (l_stream->m_status & opj_stream_e_input))) { - return; - } - - l_stream->m_read_fn = p_function; -} - -void OPJ_CALLCONV opj_stream_set_seek_function(opj_stream_t* p_stream, opj_stream_seek_fn p_function) -{ - opj_stream_private_t* l_stream = (opj_stream_private_t*) p_stream; - - if (!l_stream) { - return; - } - l_stream->m_seek_fn = p_function; -} - -void OPJ_CALLCONV opj_stream_set_write_function(opj_stream_t* p_stream, opj_stream_write_fn p_function) -{ - opj_stream_private_t* l_stream = (opj_stream_private_t*) p_stream; - - if ((!l_stream )|| (! (l_stream->m_status & opj_stream_e_output))) { - return; - } - - l_stream->m_write_fn = p_function; -} - -void OPJ_CALLCONV opj_stream_set_skip_function(opj_stream_t* p_stream, opj_stream_skip_fn p_function) -{ - opj_stream_private_t* l_stream = (opj_stream_private_t*) p_stream; - - if (! l_stream) { - return; - } - - l_stream->m_skip_fn = p_function; -} - -void OPJ_CALLCONV opj_stream_set_user_data(opj_stream_t* p_stream, void * p_data, opj_stream_free_user_data_fn p_function) -{ - opj_stream_private_t* l_stream = (opj_stream_private_t*) p_stream; - if (!l_stream) - return; - l_stream->m_user_data = p_data; - l_stream->m_free_user_data_fn = p_function; -} - -void OPJ_CALLCONV opj_stream_set_user_data_length(opj_stream_t* p_stream, OPJ_UINT64 data_length) -{ - opj_stream_private_t* l_stream = (opj_stream_private_t*) p_stream; - if (!l_stream) - return; - l_stream->m_user_data_length = data_length; -} - -OPJ_SIZE_T opj_stream_read_data (opj_stream_private_t * p_stream,OPJ_BYTE * p_buffer, OPJ_SIZE_T p_size, opj_event_mgr_t * p_event_mgr) -{ - OPJ_SIZE_T l_read_nb_bytes = 0; - if (p_stream->m_bytes_in_buffer >= p_size) { - memcpy(p_buffer,p_stream->m_current_data,p_size); - p_stream->m_current_data += p_size; - p_stream->m_bytes_in_buffer -= p_size; - l_read_nb_bytes += p_size; - p_stream->m_byte_offset += (OPJ_OFF_T)p_size; - return l_read_nb_bytes; - } - - /* we are now in the case when the remaining data if not sufficient */ - if (p_stream->m_status & opj_stream_e_end) { - l_read_nb_bytes += p_stream->m_bytes_in_buffer; - memcpy(p_buffer,p_stream->m_current_data,p_stream->m_bytes_in_buffer); - p_stream->m_current_data += p_stream->m_bytes_in_buffer; - p_stream->m_byte_offset += (OPJ_OFF_T)p_stream->m_bytes_in_buffer; - p_stream->m_bytes_in_buffer = 0; - return l_read_nb_bytes ? l_read_nb_bytes : (OPJ_SIZE_T)-1; - } - - /* the flag is not set, we copy data and then do an actual read on the stream */ - if (p_stream->m_bytes_in_buffer) { - l_read_nb_bytes += p_stream->m_bytes_in_buffer; - memcpy(p_buffer,p_stream->m_current_data,p_stream->m_bytes_in_buffer); - p_stream->m_current_data = p_stream->m_stored_data; - p_buffer += p_stream->m_bytes_in_buffer; - p_size -= p_stream->m_bytes_in_buffer; - p_stream->m_byte_offset += (OPJ_OFF_T)p_stream->m_bytes_in_buffer; - p_stream->m_bytes_in_buffer = 0; - } - else { - /* case where we are already at the end of the buffer - so reset the m_current_data to point to the start of the - stored buffer to get ready to read from disk*/ - p_stream->m_current_data = p_stream->m_stored_data; - } - - while(1){ - /* we should read less than a chunk -> read a chunk */ - if (p_size < p_stream->m_buffer_size) { - /* we should do an actual read on the media */ - p_stream->m_bytes_in_buffer = p_stream->m_read_fn(p_stream->m_stored_data,p_stream->m_buffer_size,p_stream->m_user_data); - - if (p_stream->m_bytes_in_buffer == (OPJ_SIZE_T)-1) { - /* end of stream */ - opj_event_msg(p_event_mgr, EVT_INFO, "Stream reached its end !\n"); - - p_stream->m_bytes_in_buffer = 0; - p_stream->m_status |= opj_stream_e_end; - /* end of stream */ - return l_read_nb_bytes ? l_read_nb_bytes : (OPJ_SIZE_T)-1; - } - else if (p_stream->m_bytes_in_buffer < p_size) { - /* not enough data */ - l_read_nb_bytes += p_stream->m_bytes_in_buffer; - memcpy(p_buffer,p_stream->m_current_data,p_stream->m_bytes_in_buffer); - p_stream->m_current_data = p_stream->m_stored_data; - p_buffer += p_stream->m_bytes_in_buffer; - p_size -= p_stream->m_bytes_in_buffer; - p_stream->m_byte_offset += (OPJ_OFF_T)p_stream->m_bytes_in_buffer; - p_stream->m_bytes_in_buffer = 0; - } - else { - l_read_nb_bytes += p_size; - memcpy(p_buffer,p_stream->m_current_data,p_size); - p_stream->m_current_data += p_size; - p_stream->m_bytes_in_buffer -= p_size; - p_stream->m_byte_offset += (OPJ_OFF_T)p_size; - return l_read_nb_bytes; - } - } - else { - /* direct read on the dest buffer */ - p_stream->m_bytes_in_buffer = p_stream->m_read_fn(p_buffer,p_size,p_stream->m_user_data); - - if (p_stream->m_bytes_in_buffer == (OPJ_SIZE_T)-1) { - /* end of stream */ - opj_event_msg(p_event_mgr, EVT_INFO, "Stream reached its end !\n"); - - p_stream->m_bytes_in_buffer = 0; - p_stream->m_status |= opj_stream_e_end; - /* end of stream */ - return l_read_nb_bytes ? l_read_nb_bytes : (OPJ_SIZE_T)-1; - } - else if (p_stream->m_bytes_in_buffer < p_size) { - /* not enough data */ - l_read_nb_bytes += p_stream->m_bytes_in_buffer; - p_stream->m_current_data = p_stream->m_stored_data; - p_buffer += p_stream->m_bytes_in_buffer; - p_size -= p_stream->m_bytes_in_buffer; - p_stream->m_byte_offset += (OPJ_OFF_T)p_stream->m_bytes_in_buffer; - p_stream->m_bytes_in_buffer = 0; - } - else { - /* we have read the exact size */ - l_read_nb_bytes += p_stream->m_bytes_in_buffer; - p_stream->m_byte_offset += (OPJ_OFF_T)p_stream->m_bytes_in_buffer; - p_stream->m_current_data = p_stream->m_stored_data; - p_stream->m_bytes_in_buffer = 0; - return l_read_nb_bytes; - } - } - } -} - -OPJ_SIZE_T opj_stream_write_data (opj_stream_private_t * p_stream, - const OPJ_BYTE * p_buffer, - OPJ_SIZE_T p_size, - opj_event_mgr_t * p_event_mgr) -{ - OPJ_SIZE_T l_remaining_bytes = 0; - OPJ_SIZE_T l_write_nb_bytes = 0; - - if (p_stream->m_status & opj_stream_e_error) { - return (OPJ_SIZE_T)-1; - } - - while(1) { - l_remaining_bytes = p_stream->m_buffer_size - p_stream->m_bytes_in_buffer; - - /* we have more memory than required */ - if (l_remaining_bytes >= p_size) { - memcpy(p_stream->m_current_data, p_buffer, p_size); - - p_stream->m_current_data += p_size; - p_stream->m_bytes_in_buffer += p_size; - l_write_nb_bytes += p_size; - p_stream->m_byte_offset += (OPJ_OFF_T)p_size; - - return l_write_nb_bytes; - } - - /* we copy data and then do an actual read on the stream */ - if (l_remaining_bytes) { - l_write_nb_bytes += l_remaining_bytes; - - memcpy(p_stream->m_current_data,p_buffer,l_remaining_bytes); - - p_stream->m_current_data = p_stream->m_stored_data; - - p_buffer += l_remaining_bytes; - p_size -= l_remaining_bytes; - p_stream->m_bytes_in_buffer += l_remaining_bytes; - p_stream->m_byte_offset += (OPJ_OFF_T)l_remaining_bytes; - } - - if (! opj_stream_flush(p_stream, p_event_mgr)) { - return (OPJ_SIZE_T)-1; - } - } - -} - -OPJ_BOOL opj_stream_flush (opj_stream_private_t * p_stream, opj_event_mgr_t * p_event_mgr) -{ - /* the number of bytes written on the media. */ - OPJ_SIZE_T l_current_write_nb_bytes = 0; - - p_stream->m_current_data = p_stream->m_stored_data; - - while (p_stream->m_bytes_in_buffer) { - /* we should do an actual write on the media */ - l_current_write_nb_bytes = p_stream->m_write_fn(p_stream->m_current_data, - p_stream->m_bytes_in_buffer, - p_stream->m_user_data); - - if (l_current_write_nb_bytes == (OPJ_SIZE_T)-1) { - p_stream->m_status |= opj_stream_e_error; - opj_event_msg(p_event_mgr, EVT_INFO, "Error on writing stream!\n"); - - return OPJ_FALSE; - } - - p_stream->m_current_data += l_current_write_nb_bytes; - p_stream->m_bytes_in_buffer -= l_current_write_nb_bytes; - } - - p_stream->m_current_data = p_stream->m_stored_data; - - return OPJ_TRUE; -} - -OPJ_OFF_T opj_stream_read_skip (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, opj_event_mgr_t * p_event_mgr) -{ - OPJ_OFF_T l_skip_nb_bytes = 0; - OPJ_OFF_T l_current_skip_nb_bytes = 0; - - assert( p_size >= 0 ); - - if (p_stream->m_bytes_in_buffer >= (OPJ_SIZE_T)p_size) { - p_stream->m_current_data += p_size; - /* it is safe to cast p_size to OPJ_SIZE_T since it is <= m_bytes_in_buffer - which is of type OPJ_SIZE_T */ - p_stream->m_bytes_in_buffer -= (OPJ_SIZE_T)p_size; - l_skip_nb_bytes += p_size; - p_stream->m_byte_offset += l_skip_nb_bytes; - return l_skip_nb_bytes; - } - - /* we are now in the case when the remaining data if not sufficient */ - if (p_stream->m_status & opj_stream_e_end) { - l_skip_nb_bytes += (OPJ_OFF_T)p_stream->m_bytes_in_buffer; - p_stream->m_current_data += p_stream->m_bytes_in_buffer; - p_stream->m_bytes_in_buffer = 0; - p_stream->m_byte_offset += l_skip_nb_bytes; - return l_skip_nb_bytes ? l_skip_nb_bytes : (OPJ_OFF_T) -1; - } - - /* the flag is not set, we copy data and then do an actual skip on the stream */ - if (p_stream->m_bytes_in_buffer) { - l_skip_nb_bytes += (OPJ_OFF_T)p_stream->m_bytes_in_buffer; - p_stream->m_current_data = p_stream->m_stored_data; - p_size -= (OPJ_OFF_T)p_stream->m_bytes_in_buffer; - p_stream->m_bytes_in_buffer = 0; - } - - while (p_size > 0) { - /* we should do an actual skip on the media */ - l_current_skip_nb_bytes = p_stream->m_skip_fn(p_size, p_stream->m_user_data); - if (l_current_skip_nb_bytes == (OPJ_OFF_T) -1) { - opj_event_msg(p_event_mgr, EVT_INFO, "Stream reached its end !\n"); - - p_stream->m_status |= opj_stream_e_end; - p_stream->m_byte_offset += l_skip_nb_bytes; - /* end if stream */ - return l_skip_nb_bytes ? l_skip_nb_bytes : (OPJ_OFF_T) -1; - } - p_size -= l_current_skip_nb_bytes; - l_skip_nb_bytes += l_current_skip_nb_bytes; - } - - p_stream->m_byte_offset += l_skip_nb_bytes; - - return l_skip_nb_bytes; -} - -OPJ_OFF_T opj_stream_write_skip (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, opj_event_mgr_t * p_event_mgr) -{ - OPJ_BOOL l_is_written = 0; - OPJ_OFF_T l_current_skip_nb_bytes = 0; - OPJ_OFF_T l_skip_nb_bytes = 0; - - if (p_stream->m_status & opj_stream_e_error) { - return (OPJ_OFF_T) -1; - } - - /* we should flush data */ - l_is_written = opj_stream_flush (p_stream, p_event_mgr); - if (! l_is_written) { - p_stream->m_status |= opj_stream_e_error; - p_stream->m_bytes_in_buffer = 0; - return (OPJ_OFF_T) -1; - } - /* then skip */ - - while (p_size > 0) { - /* we should do an actual skip on the media */ - l_current_skip_nb_bytes = p_stream->m_skip_fn(p_size, p_stream->m_user_data); - - if (l_current_skip_nb_bytes == (OPJ_OFF_T)-1) { - opj_event_msg(p_event_mgr, EVT_INFO, "Stream error!\n"); - - p_stream->m_status |= opj_stream_e_error; - p_stream->m_byte_offset += l_skip_nb_bytes; - /* end if stream */ - return l_skip_nb_bytes ? l_skip_nb_bytes : (OPJ_OFF_T)-1; - } - p_size -= l_current_skip_nb_bytes; - l_skip_nb_bytes += l_current_skip_nb_bytes; - } - - p_stream->m_byte_offset += l_skip_nb_bytes; - - return l_skip_nb_bytes; -} - -OPJ_OFF_T opj_stream_tell (const opj_stream_private_t * p_stream) -{ - return p_stream->m_byte_offset; -} - -OPJ_OFF_T opj_stream_get_number_byte_left (const opj_stream_private_t * p_stream) -{ - assert( p_stream->m_byte_offset >= 0 ); - assert( p_stream->m_user_data_length >= (OPJ_UINT64)p_stream->m_byte_offset); - return p_stream->m_user_data_length ? - (OPJ_OFF_T)(p_stream->m_user_data_length) - p_stream->m_byte_offset : - 0; -} - -OPJ_OFF_T opj_stream_skip (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, opj_event_mgr_t * p_event_mgr) -{ - assert(p_size >= 0); - return p_stream->m_opj_skip(p_stream,p_size,p_event_mgr); -} - -OPJ_BOOL opj_stream_read_seek (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, opj_event_mgr_t * p_event_mgr) -{ - OPJ_ARG_NOT_USED(p_event_mgr); - p_stream->m_current_data = p_stream->m_stored_data; - p_stream->m_bytes_in_buffer = 0; - - if( !(p_stream->m_seek_fn(p_size,p_stream->m_user_data)) ) { - p_stream->m_status |= opj_stream_e_end; - return OPJ_FALSE; - } - else { - /* reset stream status */ - p_stream->m_status &= (~opj_stream_e_end); - p_stream->m_byte_offset = p_size; - - } - - return OPJ_TRUE; -} - -OPJ_BOOL opj_stream_write_seek (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, opj_event_mgr_t * p_event_mgr) -{ - if (! opj_stream_flush(p_stream,p_event_mgr)) { - p_stream->m_status |= opj_stream_e_error; - return OPJ_FALSE; - } - - p_stream->m_current_data = p_stream->m_stored_data; - p_stream->m_bytes_in_buffer = 0; - - if (! p_stream->m_seek_fn(p_size,p_stream->m_user_data)) { - p_stream->m_status |= opj_stream_e_error; - return OPJ_FALSE; - } - else { - p_stream->m_byte_offset = p_size; - } - - return OPJ_TRUE; -} - -OPJ_BOOL opj_stream_seek (opj_stream_private_t * p_stream, OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr) -{ - assert(p_size >= 0); - return p_stream->m_opj_seek(p_stream,p_size,p_event_mgr); -} - -OPJ_BOOL opj_stream_has_seek (const opj_stream_private_t * p_stream) -{ - return p_stream->m_seek_fn != opj_stream_default_seek; -} - -OPJ_SIZE_T opj_stream_default_read (void * p_buffer, OPJ_SIZE_T p_nb_bytes, void * p_user_data) -{ - OPJ_ARG_NOT_USED(p_buffer); - OPJ_ARG_NOT_USED(p_nb_bytes); - OPJ_ARG_NOT_USED(p_user_data); - return (OPJ_SIZE_T) -1; -} - -OPJ_SIZE_T opj_stream_default_write (void * p_buffer, OPJ_SIZE_T p_nb_bytes, void * p_user_data) -{ - OPJ_ARG_NOT_USED(p_buffer); - OPJ_ARG_NOT_USED(p_nb_bytes); - OPJ_ARG_NOT_USED(p_user_data); - return (OPJ_SIZE_T) -1; -} - -OPJ_OFF_T opj_stream_default_skip (OPJ_OFF_T p_nb_bytes, void * p_user_data) -{ - OPJ_ARG_NOT_USED(p_nb_bytes); - OPJ_ARG_NOT_USED(p_user_data); - return (OPJ_OFF_T) -1; -} - -OPJ_BOOL opj_stream_default_seek (OPJ_OFF_T p_nb_bytes, void * p_user_data) -{ - OPJ_ARG_NOT_USED(p_nb_bytes); - OPJ_ARG_NOT_USED(p_user_data); - return OPJ_FALSE; -} |