jpeg_write_tables (j_compress_ptr cinfo) { if (cinfo->global_state != CSTATE_START) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); /* (Re)initialize error mgr and destination modules */ (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); (*cinfo->dest->init_destination) (cinfo); /* Initialize the marker writer ... bit of a crock to do it here. */ jinit_marker_writer(cinfo); /* Write them tables! */ (*cinfo->marker->write_tables_only) (cinfo); /* And clean up. */ (*cinfo->dest->term_destination) (cinfo); /* * In library releases up through v6a, we called jpeg_abort() here to free * any working memory allocated by the destination manager and marker * writer. Some applications had a problem with that: they allocated space * of their own from the library memory manager, and didn't want it to go * away during write_tables. So now we do nothing. This will cause a * memory leak if an app calls write_tables repeatedly without doing a full * compression cycle or otherwise resetting the JPEG object. However, that * seems less bad than unexpectedly freeing memory in the normal case. * An app that prefers the old behavior can call jpeg_abort for itself after * each call to jpeg_write_tables(). */ }
transencode_master_selection (j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays) { cinfo->data_unit = DCTSIZE; /* Although we don't actually use input_components for transcoding, * jcmaster.c's initial_setup will complain if input_components is 0. */ cinfo->input_components = 1; /* Initialize master control (includes parameter checking/processing) */ jinit_c_master_control(cinfo, TRUE /* transcode only */); /* We need a special compression codec. */ transencode_codec(cinfo, coef_arrays); jinit_marker_writer(cinfo); /* We can now tell the memory manager to allocate virtual arrays. */ (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); /* Write the datastream header (SOI, JFIF) immediately. * Frame and scan headers are postponed till later. * This lets application insert special markers after the SOI. */ (*cinfo->marker->write_file_header) (cinfo); }
transencode_master_selection (j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays) { /* Initialize master control (includes parameter checking/processing) */ jinit_c_master_control(cinfo, TRUE /* transcode only */); /* Entropy encoding: either Huffman or arithmetic coding. */ if (cinfo->arith_code) jinit_arith_encoder(cinfo); else { jinit_huff_encoder(cinfo); } /* We need a special coefficient buffer controller. */ transencode_coef_controller(cinfo, coef_arrays); jinit_marker_writer(cinfo); /* We can now tell the memory manager to allocate virtual arrays. */ (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); /* Write the datastream header (SOI, JFIF) immediately. * Frame and scan headers are postponed till later. * This lets application insert special markers after the SOI. */ (*cinfo->marker->write_file_header) (cinfo); }
jinit_compress_master (j_compress_ptr cinfo) { /* Initialize master control (includes parameter checking/processing) */ jinit_c_master_control(cinfo, FALSE /* full compression */); /* Initialize compression codec */ jinit_c_codec(cinfo); /* Preprocessing */ if (! cinfo->raw_data_in) { jinit_color_converter(cinfo); jinit_downsampler(cinfo); jinit_c_prep_controller(cinfo, FALSE /* never need full buffer here */); } jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */); jinit_marker_writer(cinfo); /* We can now tell the memory manager to allocate virtual arrays. */ (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); /* Write the datastream header (SOI) immediately. * Frame and scan headers are postponed till later. * This lets application insert special markers after the SOI. */ (*cinfo->marker->write_file_header) (cinfo); }
GLOBAL void jpeg_write_tables (j_compress_ptr cinfo) { if (cinfo->global_state != CSTATE_START) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); /* (Re)initialize error mgr and destination modules */ (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); (*cinfo->dest->init_destination) (cinfo); /* Initialize the marker writer ... bit of a crock to do it here. */ jinit_marker_writer(cinfo); /* Write them tables! */ (*cinfo->marker->write_tables_only) (cinfo); /* And clean up. */ (*cinfo->dest->term_destination) (cinfo); /* We can use jpeg_abort to release memory. */ jpeg_abort((j_common_ptr) cinfo); }
jinit_compress_master (j_compress_ptr cinfo) { /* Initialize master control (includes parameter checking/processing) */ jinit_c_master_control(cinfo, FALSE /* full compression */); /* Preprocessing */ if (! cinfo->raw_data_in) { jinit_color_converter(cinfo); jinit_downsampler(cinfo); jinit_c_prep_controller(cinfo, FALSE /* never need full buffer here */); } /* Forward DCT */ jinit_forward_dct(cinfo); /* Entropy encoding: either Huffman or arithmetic coding. */ if (cinfo->arith_code) { #ifdef C_ARITH_CODING_SUPPORTED jinit_arith_encoder(cinfo); #else ERREXIT(cinfo, JERR_ARITH_NOTIMPL); #endif } else { if (cinfo->progressive_mode) { #ifdef C_PROGRESSIVE_SUPPORTED jinit_phuff_encoder(cinfo); #else ERREXIT(cinfo, JERR_NOT_COMPILED); #endif } else jinit_huff_encoder(cinfo); } /* Need a full-image coefficient buffer in any multi-pass mode. */ jinit_c_coef_controller(cinfo, (boolean) (cinfo->num_scans > 1 || cinfo->optimize_coding)); jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */); jinit_marker_writer(cinfo); /* We can now tell the memory manager to allocate virtual arrays. */ (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); /* Write the datastream header (SOI) immediately. * Frame and scan headers are postponed till later. * This lets application insert special markers after the SOI. */ (*cinfo->marker->write_file_header) (cinfo); }
LOCAL void master_selection (j_compress_ptr cinfo) { my_master_ptr master = (my_master_ptr) cinfo->master; initial_setup(cinfo); master->pass_number = 0; /* There's not a lot of smarts here right now, but it'll get more * complicated when we have multiple implementations available... */ /* Preprocessing */ if (! cinfo->raw_data_in) { jinit_color_converter(cinfo); jinit_downsampler(cinfo); jinit_c_prep_controller(cinfo, FALSE /* never need full buffer here */); } /* Forward DCT */ jinit_forward_dct(cinfo); /* Entropy encoding: either Huffman or arithmetic coding. */ if (cinfo->arith_code) { #ifdef C_ARITH_CODING_SUPPORTED jinit_arith_encoder(cinfo); #else ERREXIT(cinfo, JERR_ARITH_NOTIMPL); #endif } else jinit_huff_encoder(cinfo); /* For now, a full buffer is needed only for Huffman optimization. */ jinit_c_coef_controller(cinfo, cinfo->optimize_coding); jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */); jinit_marker_writer(cinfo); /* We can now tell the memory manager to allocate virtual arrays. */ (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); /* Write the datastream header (SOI) immediately. * Frame and scan headers are postponed till later. * This lets application insert special markers after the SOI. */ (*cinfo->marker->write_file_header) (cinfo); }
transencode_master_selection (j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays) { /* Although we don't actually use input_components for transcoding, * jcmaster.c's initial_setup will complain if input_components is 0. */ cinfo->input_components = 1; /* Initialize master control (includes parameter checking/processing) */ jinit_c_master_control(cinfo, TRUE /* transcode only */); /* Entropy encoding: either Huffman or arithmetic coding. */ if (cinfo->arith_code) { ERREXIT(cinfo, JERR_ARITH_NOTIMPL); } else { if (cinfo->progressive_mode) { #ifdef C_PROGRESSIVE_SUPPORTED jinit_phuff_encoder(cinfo); #else ERREXIT(cinfo, JERR_NOT_COMPILED); #endif } else jinit_huff_encoder(cinfo); } /* We need a special coefficient buffer controller. */ transencode_coef_controller(cinfo, coef_arrays); jinit_marker_writer(cinfo); /* We can now tell the memory manager to allocate virtual arrays. */ (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); /* Write the datastream header (SOI, JFIF) immediately. * Frame and scan headers are postponed till later. * This lets application insert special markers after the SOI. */ (*cinfo->marker->write_file_header) (cinfo); }