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| 1 /* | 1 /* |
| 2 * The copyright in this software is being made available under the 2-clauses | 2 * The copyright in this software is being made available under the 2-clauses |
| 3 * BSD License, included below. This software may be subject to other third | 3 * BSD License, included below. This software may be subject to other third |
| 4 * party and contributor rights, including patent rights, and no such rights | 4 * party and contributor rights, including patent rights, and no such rights |
| 5 * are granted under this license. | 5 * are granted under this license. |
| 6 * | 6 * |
| 7 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium | 7 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium |
| 8 * Copyright (c) 2002-2014, Professor Benoit Macq | 8 * Copyright (c) 2002-2014, Professor Benoit Macq |
| 9 * Copyright (c) 2001-2003, David Janssens | 9 * Copyright (c) 2001-2003, David Janssens |
| 10 * Copyright (c) 2002-2003, Yannick Verschueren | 10 * Copyright (c) 2002-2003, Yannick Verschueren |
| (...skipping 28 matching lines...) Expand all Loading... |
| 39 | 39 |
| 40 #include "opj_includes.h" | 40 #include "opj_includes.h" |
| 41 | 41 |
| 42 /* ----------------------------------------------------------------------- */ | 42 /* ----------------------------------------------------------------------- */ |
| 43 | 43 |
| 44 | 44 |
| 45 /* ----------------------------------------------------------------------- */ | 45 /* ----------------------------------------------------------------------- */ |
| 46 | 46 |
| 47 void opj_write_bytes_BE (OPJ_BYTE * p_buffer, OPJ_UINT32 p_value, OPJ_UINT32 p_n
b_bytes) | 47 void opj_write_bytes_BE (OPJ_BYTE * p_buffer, OPJ_UINT32 p_value, OPJ_UINT32 p_n
b_bytes) |
| 48 { | 48 { |
| 49 » const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value) + p_nb_bytes
; | 49 » const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value)+sizeof(OPJ_U
INT32)-p_nb_bytes; |
| 50 | 50 |
| 51 assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); | 51 assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); |
| 52 | 52 |
| 53 memcpy(p_buffer,l_data_ptr,p_nb_bytes); | 53 memcpy(p_buffer,l_data_ptr,p_nb_bytes); |
| 54 } | 54 } |
| 55 | 55 |
| 56 void opj_write_bytes_LE (OPJ_BYTE * p_buffer, OPJ_UINT32 p_value, OPJ_UINT32 p_n
b_bytes) | 56 void opj_write_bytes_LE (OPJ_BYTE * p_buffer, OPJ_UINT32 p_value, OPJ_UINT32 p_n
b_bytes) |
| 57 { | 57 { |
| 58 const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value) + p_nb_bytes
- 1; | 58 const OPJ_BYTE * l_data_ptr = ((const OPJ_BYTE *) &p_value) + p_nb_bytes
- 1; |
| 59 OPJ_UINT32 i; | 59 OPJ_UINT32 i; |
| 60 | 60 |
| 61 assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); | 61 assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); |
| 62 | 62 |
| 63 for (i=0;i<p_nb_bytes;++i) { | 63 for (i=0;i<p_nb_bytes;++i) { |
| 64 *(p_buffer++) = *(l_data_ptr--); | 64 *(p_buffer++) = *(l_data_ptr--); |
| 65 } | 65 } |
| 66 } | 66 } |
| 67 | 67 |
| 68 void opj_read_bytes_BE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value, OPJ_UINT
32 p_nb_bytes) | 68 void opj_read_bytes_BE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value, OPJ_UINT
32 p_nb_bytes) |
| 69 { | 69 { |
| 70 OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value); | 70 OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value); |
| 71 | 71 |
| 72 assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); | 72 assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); |
| 73 | 73 |
| 74 *p_value = 0; | 74 *p_value = 0; |
| 75 » memcpy(l_data_ptr+4-p_nb_bytes,p_buffer,p_nb_bytes); | 75 » memcpy(l_data_ptr+sizeof(OPJ_UINT32)-p_nb_bytes,p_buffer,p_nb_bytes); |
| 76 } | 76 } |
| 77 | 77 |
| 78 void opj_read_bytes_LE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value, OPJ_UINT
32 p_nb_bytes) | 78 void opj_read_bytes_LE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value, OPJ_UINT
32 p_nb_bytes) |
| 79 { | 79 { |
| 80 OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value) + p_nb_bytes-1; | 80 OPJ_BYTE * l_data_ptr = ((OPJ_BYTE *) p_value) + p_nb_bytes-1; |
| 81 OPJ_UINT32 i; | 81 OPJ_UINT32 i; |
| 82 | 82 |
| 83 assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); | 83 assert(p_nb_bytes > 0 && p_nb_bytes <= sizeof(OPJ_UINT32)); |
| 84 | 84 |
| 85 *p_value = 0; | 85 *p_value = 0; |
| (...skipping 209 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 295 p_stream->m_byte_offset += (OPJ_OFF_T)p_stream->m_bytes_in_buffe
r; | 295 p_stream->m_byte_offset += (OPJ_OFF_T)p_stream->m_bytes_in_buffe
r; |
| 296 p_stream->m_bytes_in_buffer = 0; | 296 p_stream->m_bytes_in_buffer = 0; |
| 297 } | 297 } |
| 298 else { | 298 else { |
| 299 /* case where we are already at the end of the buffer | 299 /* case where we are already at the end of the buffer |
| 300 so reset the m_current_data to point to the start of the | 300 so reset the m_current_data to point to the start of the |
| 301 stored buffer to get ready to read from disk*/ | 301 stored buffer to get ready to read from disk*/ |
| 302 p_stream->m_current_data = p_stream->m_stored_data; | 302 p_stream->m_current_data = p_stream->m_stored_data; |
| 303 } | 303 } |
| 304 | 304 |
| 305 » while(1){ | 305 » for (;;) { |
| 306 /* we should read less than a chunk -> read a chunk */ | 306 /* we should read less than a chunk -> read a chunk */ |
| 307 if (p_size < p_stream->m_buffer_size) { | 307 if (p_size < p_stream->m_buffer_size) { |
| 308 /* we should do an actual read on the media */ | 308 /* we should do an actual read on the media */ |
| 309 p_stream->m_bytes_in_buffer = p_stream->m_read_fn(p_stre
am->m_stored_data,p_stream->m_buffer_size,p_stream->m_user_data); | 309 p_stream->m_bytes_in_buffer = p_stream->m_read_fn(p_stre
am->m_stored_data,p_stream->m_buffer_size,p_stream->m_user_data); |
| 310 | 310 |
| 311 if (p_stream->m_bytes_in_buffer == (OPJ_SIZE_T)-1) { | 311 if (p_stream->m_bytes_in_buffer == (OPJ_SIZE_T)-1) { |
| 312 /* end of stream */ | 312 /* end of stream */ |
| 313 opj_event_msg(p_event_mgr, EVT_INFO, "Stream rea
ched its end !\n"); | 313 opj_event_msg(p_event_mgr, EVT_INFO, "Stream rea
ched its end !\n"); |
| 314 | 314 |
| 315 p_stream->m_bytes_in_buffer = 0; | 315 p_stream->m_bytes_in_buffer = 0; |
| (...skipping 59 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 375 OPJ_SIZE_T p_s
ize, | 375 OPJ_SIZE_T p_s
ize, |
| 376 opj_event_mgr_
t * p_event_mgr) | 376 opj_event_mgr_
t * p_event_mgr) |
| 377 { | 377 { |
| 378 OPJ_SIZE_T l_remaining_bytes = 0; | 378 OPJ_SIZE_T l_remaining_bytes = 0; |
| 379 OPJ_SIZE_T l_write_nb_bytes = 0; | 379 OPJ_SIZE_T l_write_nb_bytes = 0; |
| 380 | 380 |
| 381 if (p_stream->m_status & opj_stream_e_error) { | 381 if (p_stream->m_status & opj_stream_e_error) { |
| 382 return (OPJ_SIZE_T)-1; | 382 return (OPJ_SIZE_T)-1; |
| 383 } | 383 } |
| 384 | 384 |
| 385 » while(1) { | 385 » for (;;) { |
| 386 l_remaining_bytes = p_stream->m_buffer_size - p_stream->m_bytes_
in_buffer; | 386 l_remaining_bytes = p_stream->m_buffer_size - p_stream->m_bytes_
in_buffer; |
| 387 | 387 |
| 388 /* we have more memory than required */ | 388 /* we have more memory than required */ |
| 389 if (l_remaining_bytes >= p_size) { | 389 if (l_remaining_bytes >= p_size) { |
| 390 memcpy(p_stream->m_current_data, p_buffer, p_size); | 390 memcpy(p_stream->m_current_data, p_buffer, p_size); |
| 391 | 391 |
| 392 p_stream->m_current_data += p_size; | 392 p_stream->m_current_data += p_size; |
| 393 p_stream->m_bytes_in_buffer += p_size; | 393 p_stream->m_bytes_in_buffer += p_size; |
| 394 l_write_nb_bytes += p_size; | 394 l_write_nb_bytes += p_size; |
| 395 p_stream->m_byte_offset += (OPJ_OFF_T)p_size; | 395 p_stream->m_byte_offset += (OPJ_OFF_T)p_size; |
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| 635 OPJ_ARG_NOT_USED(p_user_data); | 635 OPJ_ARG_NOT_USED(p_user_data); |
| 636 return (OPJ_OFF_T) -1; | 636 return (OPJ_OFF_T) -1; |
| 637 } | 637 } |
| 638 | 638 |
| 639 OPJ_BOOL opj_stream_default_seek (OPJ_OFF_T p_nb_bytes, void * p_user_data) | 639 OPJ_BOOL opj_stream_default_seek (OPJ_OFF_T p_nb_bytes, void * p_user_data) |
| 640 { | 640 { |
| 641 OPJ_ARG_NOT_USED(p_nb_bytes); | 641 OPJ_ARG_NOT_USED(p_nb_bytes); |
| 642 OPJ_ARG_NOT_USED(p_user_data); | 642 OPJ_ARG_NOT_USED(p_user_data); |
| 643 return OPJ_FALSE; | 643 return OPJ_FALSE; |
| 644 } | 644 } |
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