/*
- * Copyright (c) 2005, Herv� Drolon, FreeImage Team
+ * Copyright (c) 2005, Herve Drolon, FreeImage Team
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* POSSIBILITY OF SUCH DAMAGE.
*/
-#ifdef WIN32
+#ifdef _WIN32
#include <windows.h>
-#endif /* WIN32 */
+#endif /* _WIN32 */
+#include "opj_config.h"
#include "opj_includes.h"
+typedef struct opj_decompression
+{
+ opj_bool (* opj_read_header) ( struct opj_stream_private * cio,
+ void * p_codec,
+ opj_file_info_t * file_info,
+ struct opj_event_mgr * p_manager);
+
+ opj_image_t* (* opj_decode) ( void * p_codec,
+ struct opj_stream_private *p_cio,
+ struct opj_event_mgr * p_manager);
+
+ opj_bool (*opj_read_tile_header)( void * p_codec,
+ OPJ_UINT32 * p_tile_index,
+ OPJ_UINT32* p_data_size,
+ OPJ_INT32 * p_tile_x0, OPJ_INT32 * p_tile_y0,
+ OPJ_INT32 * p_tile_x1, OPJ_INT32 * p_tile_y1,
+ OPJ_UINT32 * p_nb_comps,
+ opj_bool * p_should_go_on,
+ struct opj_stream_private *p_cio,
+ struct opj_event_mgr * p_manager);
+
+ opj_bool (*opj_decode_tile_data)( void * p_codec,
+ OPJ_UINT32 p_tile_index,
+ OPJ_BYTE * p_data,
+ OPJ_UINT32 p_data_size,
+ struct opj_stream_private *p_cio,
+ struct opj_event_mgr * p_manager);
+
+ opj_bool (* opj_end_decompress) ( void *p_codec,
+ struct opj_stream_private *cio,
+ struct opj_event_mgr * p_manager);
+
+ void (* opj_destroy) (void * p_codec);
+
+ void (*opj_setup_decoder) (void * p_codec, opj_dparameters_t * p_param);
+
+ opj_bool (*opj_set_decode_area) ( void * p_codec,
+ OPJ_INT32 p_start_x, OPJ_INT32 p_end_x,
+ OPJ_INT32 p_start_y, OPJ_INT32 p_end_y,
+ struct opj_event_mgr * p_manager);
+}opj_decompression_t;
+
+typedef struct opj_compression
+{
+ opj_bool (* opj_start_compress) (void *p_codec,struct opj_stream_private *cio,struct opj_image * p_image, struct opj_event_mgr * p_manager);
+ opj_bool (* opj_encode) (void * p_codec, struct opj_stream_private *p_cio, struct opj_event_mgr * p_manager);
+ opj_bool (* opj_write_tile) (void * p_codec,OPJ_UINT32 p_tile_index,OPJ_BYTE * p_data,OPJ_UINT32 p_data_size,struct opj_stream_private * p_cio,struct opj_event_mgr * p_manager);
+ opj_bool (* opj_end_compress) (void * p_codec, struct opj_stream_private *p_cio, struct opj_event_mgr * p_manager);
+ void (* opj_destroy) (void * p_codec);
+ void (*opj_setup_encoder) (void * p_codec,opj_cparameters_t * p_param,struct opj_image * p_image, struct opj_event_mgr * p_manager);
+
+}opj_compression_t;
+
+typedef struct opj_codec_private
+{
+ /* code-blocks informations */
+ union {
+ opj_decompression_t m_decompression;
+ opj_compression_t m_compression;
+ } m_codec_data;
+ void * m_codec;
+ opj_event_mgr_t* m_event_mgr;
+ unsigned is_decompressor : 1;
+}
+opj_codec_private_t;
+
+/**
+ * Default callback function.
+ * Do nothing.
+ */
+void opj_default_callback (const char *msg, void *client_data)
+{
+ //FIXME V2 -> V1 cf below
+}
+
+void set_default_event_handler(opj_event_mgr_t * p_manager)
+{
+ //FIXME V2 -> V1
+ //p_manager->m_error_data = 00;
+ //p_manager->m_warning_data = 00;
+ //p_manager->m_info_data = 00;
+ p_manager->error_handler = opj_default_callback;
+ p_manager->info_handler = opj_default_callback;
+ p_manager->warning_handler = opj_default_callback;
+}
+
+OPJ_UINT32 opj_read_from_file (void * p_buffer, OPJ_UINT32 p_nb_bytes, FILE * p_file)
+{
+ OPJ_UINT32 l_nb_read = fread(p_buffer,1,p_nb_bytes,p_file);
+ return l_nb_read ? l_nb_read : -1;
+}
+
+OPJ_UINT32 opj_write_from_file (void * p_buffer, OPJ_UINT32 p_nb_bytes, FILE * p_file)
+{
+ return fwrite(p_buffer,1,p_nb_bytes,p_file);
+}
+
+OPJ_SIZE_T opj_skip_from_file (OPJ_SIZE_T p_nb_bytes, FILE * p_user_data)
+{
+ if (fseek(p_user_data,p_nb_bytes,SEEK_CUR)) {
+ return -1;
+ }
+
+ return p_nb_bytes;
+}
+
+opj_bool opj_seek_from_file (OPJ_SIZE_T p_nb_bytes, FILE * p_user_data)
+{
+ if (fseek(p_user_data,p_nb_bytes,SEEK_SET)) {
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
+}
+
/* ---------------------------------------------------------------------- */
-#ifdef WIN32
+#ifdef _WIN32
#ifndef OPJ_STATIC
BOOL APIENTRY
DllMain(HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) {
+
+ OPJ_ARG_NOT_USED(lpReserved);
+ OPJ_ARG_NOT_USED(hModule);
+
switch (ul_reason_for_call) {
case DLL_PROCESS_ATTACH :
break;
return TRUE;
}
#endif /* OPJ_STATIC */
-#endif /* WIN32 */
+#endif /* _WIN32 */
/* ---------------------------------------------------------------------- */
const char* OPJ_CALLCONV opj_version(void) {
- return OPENJPEG_VERSION;
+ return PACKAGE_VERSION;
}
opj_dinfo_t* OPJ_CALLCONV opj_create_decompress(OPJ_CODEC_FORMAT format) {
- opj_dinfo_t *dinfo = (opj_dinfo_t*)opj_malloc(sizeof(opj_dinfo_t));
+ opj_dinfo_t *dinfo = (opj_dinfo_t*)opj_calloc(1, sizeof(opj_dinfo_t));
if(!dinfo) return NULL;
- dinfo->is_decompressor = true;
+ dinfo->is_decompressor = OPJ_TRUE;
switch(format) {
case CODEC_J2K:
case CODEC_JPT:
return dinfo;
}
+opj_codec_t* OPJ_CALLCONV opj_create_decompress_v2(OPJ_CODEC_FORMAT p_format)
+{
+ opj_codec_private_t *l_info = 00;
+
+ l_info = (opj_codec_private_t*) opj_calloc(1, sizeof(opj_codec_private_t));
+ if (!l_info){
+ return 00;
+ }
+ memset(l_info, 0, sizeof(opj_codec_private_t));
+
+ l_info->is_decompressor = 1;
+
+ switch (p_format) {
+ case CODEC_J2K:
+ l_info->m_codec_data.m_decompression.opj_decode =
+ (opj_image_t* (*) (void *, struct opj_stream_private *, struct opj_event_mgr * ))j2k_decode; // TODO MSD
+
+ l_info->m_codec_data.m_decompression.opj_end_decompress =
+ (opj_bool (*) (void *, struct opj_stream_private *, struct opj_event_mgr *))j2k_end_decompress;
+
+ l_info->m_codec_data.m_decompression.opj_read_header =
+ (opj_bool (*) ( struct opj_stream_private *,
+ void *,
+ opj_file_info_t *,
+ struct opj_event_mgr * )) j2k_read_header;
+
+ l_info->m_codec_data.m_decompression.opj_destroy = (void (*) (void *))j2k_destroy;
+
+ l_info->m_codec_data.m_decompression.opj_setup_decoder = (void (*) (void * , opj_dparameters_t * )) j2k_setup_decoder_v2;
+
+ l_info->m_codec_data.m_decompression.opj_read_tile_header =
+ (opj_bool (*) ( void *,
+ OPJ_UINT32*,
+ OPJ_UINT32*,
+ OPJ_INT32*, OPJ_INT32*,
+ OPJ_INT32*, OPJ_INT32*,
+ OPJ_UINT32*,
+ opj_bool*,
+ struct opj_stream_private *,
+ struct opj_event_mgr * )) j2k_read_tile_header;
+
+ l_info->m_codec_data.m_decompression.opj_decode_tile_data =
+ (opj_bool (*) (void *, OPJ_UINT32, OPJ_BYTE*, OPJ_UINT32, struct opj_stream_private *, struct opj_event_mgr *)) j2k_decode_tile;
+
+ l_info->m_codec_data.m_decompression.opj_set_decode_area =
+ (opj_bool (*) (void *, OPJ_INT32, OPJ_INT32, OPJ_INT32, OPJ_INT32, struct opj_event_mgr *)) j2k_set_decode_area;
+
+ l_info->m_codec = j2k_create_decompress_v2();
+
+ if (! l_info->m_codec) {
+ opj_free(l_info);
+ return NULL;
+ }
+
+ break;
+
+ case CODEC_JP2:
+ /* get a JP2 decoder handle */
+ l_info->m_codec_data.m_decompression.opj_decode = (opj_image_t* (*) (void *, struct opj_stream_private *, struct opj_event_mgr * ))opj_jp2_decode; // TODO MSD
+
+ l_info->m_codec_data.m_decompression.opj_end_decompress = (opj_bool (*) (void *,struct opj_stream_private *,struct opj_event_mgr *)) jp2_end_decompress;
+
+ l_info->m_codec_data.m_decompression.opj_read_header = (opj_bool (*) (
+ struct opj_stream_private *,
+ void *,
+ opj_file_info_t *,
+ struct opj_event_mgr * )) jp2_read_header;
+
+ l_info->m_codec_data.m_decompression.opj_read_tile_header = ( opj_bool (*) (
+ void *,
+ OPJ_UINT32*,
+ OPJ_UINT32*,
+ OPJ_INT32*,
+ OPJ_INT32*,
+ OPJ_INT32 * ,
+ OPJ_INT32 * ,
+ OPJ_UINT32 * ,
+ opj_bool *,
+ struct opj_stream_private *,
+ struct opj_event_mgr * )) jp2_read_tile_header;
+
+ l_info->m_codec_data.m_decompression.opj_decode_tile_data = (opj_bool (*) (void *,OPJ_UINT32,OPJ_BYTE*,OPJ_UINT32,struct opj_stream_private *, struct opj_event_mgr * )) opj_jp2_decode_tile;
+
+ l_info->m_codec_data.m_decompression.opj_destroy = (void (*) (void *))jp2_destroy;
+
+ l_info->m_codec_data.m_decompression.opj_setup_decoder = (void (*) (void * ,opj_dparameters_t * )) jp2_setup_decoder_v2;
+
+ l_info->m_codec_data.m_decompression.opj_set_decode_area = (opj_bool (*) (void *,OPJ_INT32,OPJ_INT32,OPJ_INT32,OPJ_INT32, struct opj_event_mgr * )) jp2_set_decode_area;
+
+ l_info->m_codec = jp2_create(OPJ_TRUE);
+
+ if (! l_info->m_codec) {
+ opj_free(l_info);
+ return 00;
+ }
+
+ break;
+ case CODEC_UNKNOWN:
+ case CODEC_JPT:
+ default:
+ opj_free(l_info);
+ return 00;
+ }
+
+ // FIXME set_default_event_handler(&(l_info->m_event_mgr));
+ return (opj_codec_t*) l_info;
+}
+
+
void OPJ_CALLCONV opj_destroy_decompress(opj_dinfo_t *dinfo) {
if(dinfo) {
/* destroy the codec */
parameters->cod_format = -1;
/* UniPG>> */
#ifdef USE_JPWL
- parameters->jpwl_correct = false;
+ parameters->jpwl_correct = OPJ_FALSE;
parameters->jpwl_exp_comps = JPWL_EXPECTED_COMPONENTS;
parameters->jpwl_max_tiles = JPWL_MAXIMUM_TILES;
#endif /* USE_JPWL */
}
}
+opj_bool OPJ_CALLCONV opj_setup_decoder_v2(opj_codec_t *p_info, opj_dparameters_t *parameters, opj_event_mgr_t* event_mgr)
+{
+ if (p_info && parameters) {
+ opj_codec_private_t * l_info = (opj_codec_private_t *) p_info;
+
+ if (! l_info->is_decompressor) {
+ return OPJ_FALSE;
+ }
+
+ l_info->m_codec_data.m_decompression.opj_setup_decoder(l_info->m_codec,parameters);
+
+ if (event_mgr == NULL)
+ {
+ l_info->m_event_mgr->error_handler = opj_default_callback ;
+ l_info->m_event_mgr->warning_handler = opj_default_callback ;
+ l_info->m_event_mgr->info_handler = opj_default_callback ;
+ l_info->m_event_mgr->client_data = stderr;
+ }
+ else
+ l_info->m_event_mgr = event_mgr;
+ return OPJ_TRUE;
+ }
+ return OPJ_FALSE;
+}
+
opj_image_t* OPJ_CALLCONV opj_decode(opj_dinfo_t *dinfo, opj_cio_t *cio) {
+ return opj_decode_with_info(dinfo, cio, NULL);
+}
+
+opj_image_t* OPJ_CALLCONV opj_decode_with_info(opj_dinfo_t *dinfo, opj_cio_t *cio, opj_codestream_info_t *cstr_info) {
if(dinfo && cio) {
switch(dinfo->codec_format) {
case CODEC_J2K:
- return j2k_decode((opj_j2k_t*)dinfo->j2k_handle, cio);
+ return j2k_decode((opj_j2k_t*)dinfo->j2k_handle, cio, cstr_info);
case CODEC_JPT:
- return j2k_decode_jpt_stream((opj_j2k_t*)dinfo->j2k_handle, cio);
+ return j2k_decode_jpt_stream((opj_j2k_t*)dinfo->j2k_handle, cio, cstr_info);
case CODEC_JP2:
- return jp2_decode((opj_jp2_t*)dinfo->jp2_handle, cio);
+ return opj_jp2_decode((opj_jp2_t*)dinfo->jp2_handle, cio, cstr_info);
case CODEC_UNKNOWN:
default:
break;
}
}
-
return NULL;
}
opj_cinfo_t* OPJ_CALLCONV opj_create_compress(OPJ_CODEC_FORMAT format) {
- opj_cinfo_t *cinfo = (opj_cinfo_t*)opj_malloc(sizeof(opj_cinfo_t));
+ opj_cinfo_t *cinfo = (opj_cinfo_t*)opj_calloc(1, sizeof(opj_cinfo_t));
if(!cinfo) return NULL;
- cinfo->is_decompressor = false;
+ cinfo->is_decompressor = OPJ_FALSE;
switch(format) {
case CODEC_J2K:
/* get a J2K coder handle */
parameters->tp_on = 0;
parameters->decod_format = -1;
parameters->cod_format = -1;
+ parameters->tcp_rates[0] = 0;
+ parameters->tcp_numlayers = 0;
+ parameters->cp_disto_alloc = 0;
+ parameters->cp_fixed_alloc = 0;
+ parameters->cp_fixed_quality = 0;
+ parameters->jpip_on = OPJ_FALSE;
/* UniPG>> */
#ifdef USE_JPWL
- parameters->jpwl_epc_on = false;
+ parameters->jpwl_epc_on = OPJ_FALSE;
parameters->jpwl_hprot_MH = -1; /* -1 means unassigned */
{
int i;
}
}
+/**
+ * Helper function.
+ * Sets the stream to be a file stream. The FILE must have been open previously.
+ * @param p_stream the stream to modify
+ * @param p_file handler to an already open file.
+*/
+opj_stream_t* OPJ_CALLCONV opj_stream_create_default_file_stream (FILE * p_file, opj_bool p_is_read_stream)
+{
+ return opj_stream_create_file_stream(p_file,J2K_STREAM_CHUNK_SIZE,p_is_read_stream);
+}
+
+opj_stream_t* OPJ_CALLCONV opj_stream_create_file_stream (FILE * p_file, OPJ_UINT32 p_size, opj_bool p_is_read_stream)
+{
+ opj_stream_t* l_stream = 00;
+
+ if (! p_file) {
+ return NULL;
+ }
+
+ l_stream = opj_stream_create(p_size,p_is_read_stream);
+ if (! l_stream) {
+ return NULL;
+ }
+
+ opj_stream_set_user_data(l_stream, p_file);
+ opj_stream_set_read_function(l_stream, (opj_stream_read_fn) opj_read_from_file);
+ opj_stream_set_write_function(l_stream, (opj_stream_write_fn) opj_write_from_file);
+ opj_stream_set_skip_function(l_stream, (opj_stream_skip_fn) opj_skip_from_file);
+ opj_stream_set_seek_function(l_stream, (opj_stream_seek_fn) opj_seek_from_file);
+
+ return l_stream;
+}
+
void OPJ_CALLCONV opj_setup_encoder(opj_cinfo_t *cinfo, opj_cparameters_t *parameters, opj_image_t *image) {
if(cinfo && parameters && image) {
switch(cinfo->codec_format) {
}
}
-bool OPJ_CALLCONV opj_encode(opj_cinfo_t *cinfo, opj_cio_t *cio, opj_image_t *image, char *index) {
+opj_bool OPJ_CALLCONV opj_encode(opj_cinfo_t *cinfo, opj_cio_t *cio, opj_image_t *image, char *index) {
+ if (index != NULL)
+ opj_event_msg((opj_common_ptr)cinfo, EVT_WARNING, "Set index to NULL when calling the opj_encode function.\n"
+ "To extract the index, use the opj_encode_with_info() function.\n"
+ "No index will be generated during this encoding\n");
+ return opj_encode_with_info(cinfo, cio, image, NULL);
+}
+
+opj_bool OPJ_CALLCONV opj_encode_with_info(opj_cinfo_t *cinfo, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info) {
if(cinfo && cio && image) {
switch(cinfo->codec_format) {
case CODEC_J2K:
- return j2k_encode((opj_j2k_t*)cinfo->j2k_handle, cio, image, index);
+ return j2k_encode((opj_j2k_t*)cinfo->j2k_handle, cio, image, cstr_info);
case CODEC_JP2:
- return jp2_encode((opj_jp2_t*)cinfo->jp2_handle, cio, image, index);
+ return opj_jp2_encode((opj_jp2_t*)cinfo->jp2_handle, cio, image, cstr_info);
case CODEC_JPT:
case CODEC_UNKNOWN:
default:
break;
}
}
+ return OPJ_FALSE;
+}
- return false;
+void OPJ_CALLCONV opj_destroy_cstr_info(opj_codestream_info_t *cstr_info) {
+ if (cstr_info) {
+ int tileno;
+ for (tileno = 0; tileno < cstr_info->tw * cstr_info->th; tileno++) {
+ opj_tile_info_t *tile_info = &cstr_info->tile[tileno];
+ opj_free(tile_info->thresh);
+ opj_free(tile_info->packet);
+ opj_free(tile_info->tp);
+ opj_free(tile_info->marker);
+ }
+ opj_free(cstr_info->tile);
+ opj_free(cstr_info->marker);
+ opj_free(cstr_info->numdecompos);
+ }
}
+
+#ifdef OLD_WAY_MS
+opj_bool OPJ_CALLCONV opj_read_header (
+ opj_codec_t *p_codec,
+ opj_image_t ** p_image,
+ OPJ_INT32 * p_tile_x0,
+ OPJ_INT32 * p_tile_y0,
+ OPJ_UINT32 * p_tile_width,
+ OPJ_UINT32 * p_tile_height,
+ OPJ_UINT32 * p_nb_tiles_x,
+ OPJ_UINT32 * p_nb_tiles_y,
+ opj_stream_t *p_cio)
+{
+ if (p_codec && p_cio) {
+ opj_codec_private_t * l_info = (opj_codec_private_t *) p_codec;
+ opj_stream_private_t * l_cio = (opj_stream_private_t *) p_cio;
+
+ if(! l_info->is_decompressor) {
+ return OPJ_FALSE;
+ }
+
+ return l_info->m_codec_data.m_decompression.opj_read_header(
+ l_info->m_codec,
+ p_image,
+ p_tile_x0,
+ p_tile_y0,
+ p_tile_width,
+ p_tile_height,
+ p_nb_tiles_x,
+ p_nb_tiles_y,
+ l_cio,
+ l_info->m_event_mgr); //&(l_info->m_event_mgr));
+ }
+ return OPJ_FALSE;
+}
+#endif
+
+opj_bool OPJ_CALLCONV opj_read_header ( opj_stream_t *p_cio,
+ opj_codec_t *p_codec,
+ opj_file_info_t* p_file_info,
+ OPJ_INT32 file_info_flag)
+
+{
+ /* Initialize the output structure */
+ opj_initialise_file_info(p_file_info, file_info_flag, CODEC_J2K);
+
+ if (p_codec && p_cio) {
+ opj_codec_private_t* l_info = (opj_codec_private_t*) p_codec;
+ opj_stream_private_t* l_cio = (opj_stream_private_t*) p_cio;
+
+ if(! l_info->is_decompressor) {
+ return OPJ_FALSE;
+ }
+
+ return l_info->m_codec_data.m_decompression.opj_read_header(
+ l_cio,
+ l_info->m_codec,
+ p_file_info,
+ l_info->m_event_mgr);
+ }
+ return OPJ_FALSE;
+}
+
+
+void OPJ_CALLCONV opj_destroy_codec(opj_codec_t *p_info)
+{
+ if
+ (p_info)
+ {
+ opj_codec_private_t * l_info = (opj_codec_private_t *) p_info;
+ if
+ (l_info->is_decompressor)
+ {
+ l_info->m_codec_data.m_decompression.opj_destroy(l_info->m_codec);
+ }
+ else
+ {
+ l_info->m_codec_data.m_compression.opj_destroy(l_info->m_codec);
+ }
+ l_info->m_codec = 00;
+ opj_free(l_info);
+ }
+}
+
+/**
+ * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading.
+ *
+ * @param p_codec the jpeg2000 codec.
+ * @param p_start_x the left position of the rectangle to decode (in image coordinates).
+ * @param p_end_x the right position of the rectangle to decode (in image coordinates).
+ * @param p_start_y the up position of the rectangle to decode (in image coordinates).
+ * @param p_end_y the bottom position of the rectangle to decode (in image coordinates).
+ *
+ * @return true if the area could be set.
+ */
+opj_bool OPJ_CALLCONV opj_set_decode_area( opj_codec_t *p_codec,
+ OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
+ OPJ_INT32 p_end_x, OPJ_INT32 p_end_y
+ )
+{
+ if (p_codec) {
+ opj_codec_private_t * l_info = (opj_codec_private_t *) p_codec;
+ if (! l_info->is_decompressor) {
+ return OPJ_FALSE;
+ }
+
+ return l_info->m_codec_data.m_decompression.opj_set_decode_area(
+ l_info->m_codec,
+ p_start_x,
+ p_start_y,
+ p_end_x,
+ p_end_y,
+ l_info->m_event_mgr);
+
+ }
+ return OPJ_FALSE;
+}
+
+/**
+ * Reads a tile header. This function is compulsory and allows one to know the size of the tile thta will be decoded.
+ * The user may need to refer to the image got by opj_read_header to understand the size being taken by the tile.
+ *
+ * @param p_codec the jpeg2000 codec.
+ * @param p_tile_index pointer to a value that will hold the index of the tile being decoded, in case of success.
+ * @param p_data_size pointer to a value that will hold the maximum size of the decoded data, in case of success. In case
+ * of truncated codestreams, the actual number of bytes decoded may be lower. The computation of the size is the same
+ * as depicted in opj_write_tile.
+ * @param p_tile_x0 pointer to a value that will hold the x0 pos of the tile (in the image).
+ * @param p_tile_y0 pointer to a value that will hold the y0 pos of the tile (in the image).
+ * @param p_tile_x1 pointer to a value that will hold the x1 pos of the tile (in the image).
+ * @param p_tile_y1 pointer to a value that will hold the y1 pos of the tile (in the image).
+ * @param p_nb_comps pointer to a value that will hold the number of components in the tile.
+ * @param p_should_go_on pointer to a boolean that will hold the fact that the decoding should go on. In case the
+ * codestream is over at the time of the call, the value will be set to false. The user should then stop
+ * the decoding.
+ * @param p_stream the stream to decode.
+ * @return true if the tile header could be decoded. In case the decoding should end, the returned value is still true.
+ * returning false may be the result of a shortage of memory or an internal error.
+ */
+opj_bool OPJ_CALLCONV opj_read_tile_header(
+ opj_codec_t *p_codec,
+ opj_stream_t * p_stream,
+ OPJ_UINT32 * p_tile_index,
+ OPJ_UINT32 * p_data_size,
+ OPJ_INT32 * p_tile_x0, OPJ_INT32 * p_tile_y0,
+ OPJ_INT32 * p_tile_x1, OPJ_INT32 * p_tile_y1,
+ OPJ_UINT32 * p_nb_comps,
+ opj_bool * p_should_go_on)
+{
+ if (p_codec && p_stream && p_data_size && p_tile_index) {
+ opj_codec_private_t * l_info = (opj_codec_private_t *) p_codec;
+ opj_stream_private_t * l_cio = (opj_stream_private_t *) p_stream;
+
+ if (! l_info->is_decompressor) {
+ return OPJ_FALSE;
+ }
+
+ return l_info->m_codec_data.m_decompression.opj_read_tile_header(
+ l_info->m_codec,
+ p_tile_index,
+ p_data_size,
+ p_tile_x0, p_tile_y0,
+ p_tile_x1, p_tile_y1,
+ p_nb_comps,
+ p_should_go_on,
+ l_cio,
+ l_info->m_event_mgr);
+ }
+ return OPJ_FALSE;
+}
projects / openjpeg.git / blobdiff