Dirac Video Codec

# Dirac - A Video Codec

Created by the British Broadcasting Corporation.

# dirac_encoder.h

Go to the documentation of this file.

    00001 /* ***** BEGIN LICENSE BLOCK *****
    00002 *
    00003 * $Id: dirac_encoder.h,v 1.26 2008/05/21 03:57:50 asuraparaju Exp $ $Name: Dirac_1_0_0 $
    00004 *
    00005 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
    00006 *
    00007 * The contents of this file are subject to the Mozilla Public License
    00008 * Version 1.1 (the "License"); you may not use this file except in compliance
    00009 * with the License. You may obtain a copy of the License at
    00010 * http://www.mozilla.org/MPL/
    00011 *
    00012 * Software distributed under the License is distributed on an "AS IS" basis,
    00013 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
    00014 * the specific language governing rights and limitations under the License.
    00015 *
    00016 * The Original Code is BBC Research and Development code.
    00017 *
    00018 * The Initial Developer of the Original Code is the British Broadcasting
    00019 * Corporation.
    00020 * Portions created by the Initial Developer are Copyright (C) 2004.
    00021 * All Rights Reserved.
    00022 *
    00023 * Contributor(s): Anuradha Suraparaju (Original Author)
    00024 *                 Andrew Kennedy,
    00025 *                 Thomas Davies
    00026 *                 Myo Tun (Brunel University, myo.tun@brunel.ac.uk)
    00027 *
    00028 * Alternatively, the contents of this file may be used under the terms of
    00029 * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
    00030 * Public License Version 2.1 (the "LGPL"), in which case the provisions of
    00031 * the GPL or the LGPL are applicable instead of those above. If you wish to
    00032 * allow use of your version of this file only under the terms of the either
    00033 * the GPL or LGPL and not to allow others to use your version of this file
    00034 * under the MPL, indicate your decision by deleting the provisions above
    00035 * and replace them with the notice and other provisions required by the GPL
    00036 * or LGPL. If you do not delete the provisions above, a recipient may use
    00037 * your version of this file under the terms of any one of the MPL, the GPL
    00038 * or the LGPL.
    00039 * ***** END LICENSE BLOCK ***** */
    00040
    00041 #ifndef DIRAC_ENCODER_H
    00042 #define DIRAC_ENCODER_H
    00043
    00044 #include <libdirac_common/dirac_inttypes.h>
    00045 #include <libdirac_common/dirac_types.h>
    00046
    00151 #ifdef __cplusplus
    00152 extern "C" {
    00153 #endif
    00154
    00156 typedef enum
    00157 {
    00158     ENC_STATE_INVALID = -1,
    00159     ENC_STATE_BUFFER,
    00160     ENC_STATE_AVAIL,
    00161     ENC_STATE_EOS
    00162 } dirac_encoder_state_t ;
    00163
    00166 typedef PrefilterType dirac_prefilter_t;
    00167
    00170 typedef VideoFormat dirac_encoder_presets_t;
    00171
    00174 typedef MVPrecisionType dirac_mvprecision_t;
    00176 typedef struct
    00177 {
    00179     int lossless;
    00181     float qf;
    00183     int full_search;
    00185     int x_range_me;
    00187     int y_range_me;
    00189     int L1_sep;
    00193     int num_L1;
    00195     float cpd;
    00197     int xblen;
    00199     int yblen;
    00201     int xbsep;
    00203     int ybsep;
    00205     int video_format;
    00207     dirac_wlt_filter_t intra_wlt_filter;
    00209     dirac_wlt_filter_t inter_wlt_filter;
    00211     unsigned int wlt_depth;
    00213     unsigned int spatial_partition;
    00215     dirac_prefilter_t prefilter;
    00217     unsigned int prefilter_strength;
    00219     unsigned int multi_quants;
    00221     dirac_mvprecision_t mv_precision;
    00223     int trate;
    00225     unsigned int picture_coding_mode;
    00227     int using_ac;
    00228 } dirac_encparams_t;
    00229
    00231 typedef struct
    00232 {
    00234     dirac_sourceparams_t src_params;
    00236     dirac_encparams_t enc_params;
    00238     int instr_flag;
    00241     int decode_flag;
    00242 } dirac_encoder_context_t;
    00243
    00256 extern DllExport void dirac_encoder_context_init (dirac_encoder_context_t *enc_ctx, dirac_encoder_presets_t preset);
    00257
    00258
    00260 typedef struct
    00261 {
    00263     unsigned char *buffer;
    00265     int size;
    00266 } dirac_enc_data_t;
    00267
    00269 typedef struct
    00270 {
    00272     unsigned int mv_bits;
    00274     unsigned int ycomp_bits;
    00276     unsigned int ucomp_bits;
    00278     unsigned int vcomp_bits;
    00280     unsigned int pic_bits;
    00281 } dirac_enc_picstats_t;
    00282
    00284 typedef struct
    00285 {
    00287     int64_t mv_bits;
    00289     int64_t seq_bits;
    00291     int64_t ycomp_bits;
    00293     int64_t ucomp_bits;
    00295     int64_t vcomp_bits;
    00297     int64_t bit_rate;
    00298 } dirac_enc_seqstats_t;
    00299
    00301 typedef struct
    00302 {
    00304     int x;
    00306     int y;
    00307 } dirac_mv_t;
    00308
    00310 typedef struct
    00311 {
    00313     float SAD;
    00315     float mvcost;
    00316 } dirac_mv_cost_t;
    00317
    00319 typedef struct
    00320 {
    00322     dirac_picture_type_t ptype;
    00324     dirac_reference_type_t rtype;
    00326     int pnum;
    00328     int num_refs;
    00330     int refs[2];
    00332     int xbsep;
    00334     int ybsep;
    00336     int mb_xlen;
    00338     int mb_ylen;
    00340     int mv_xlen;
    00342     int mv_ylen;
    00344     int *mb_split_mode;
    00346     float *mb_costs;
    00348     int *pred_mode;
    00350     float *intra_costs;
    00352     dirac_mv_cost_t *bipred_costs;
    00354     short *dc_ycomp;
    00356     short *dc_ucomp;
    00358     short *dc_vcomp;
    00360     dirac_mv_t *mv[2];
    00362     dirac_mv_cost_t *pred_costs[2];
    00363 } dirac_instr_t;
    00364
    00366 typedef struct
    00367 {
    00369     dirac_encoder_context_t enc_ctx;
    00370
    00372     int encoded_picture_avail;
    00373
    00378     dirac_enc_data_t enc_buf;
    00379
    00381     dirac_picparams_t enc_pparams;
    00382
    00384     dirac_enc_picstats_t enc_pstats;
    00385
    00387     dirac_enc_seqstats_t enc_seqstats;
    00388
    00390     int end_of_sequence;
    00391
    00392     /* locally decoded frame (NB: not picture) available flag.
    00393        1 - locally decoded frame available in dec_buf.
    00394        0 - locally decoded frame not available.
    00395     */
    00396     int decoded_frame_avail;
    00397
    00402     dirac_framebuf_t dec_buf;
    00403
    00405     dirac_picparams_t dec_pparams;
    00406
    00410     dirac_instr_t instr;
    00411
    00416     int instr_data_avail;
    00417
    00419     const void *compressor;
    00420 } dirac_encoder_t;
    00421
    00428 extern DllExport dirac_encoder_t *dirac_encoder_init (const dirac_encoder_context_t *enc_ctx, int verbose);
    00429
    00439 extern DllExport int dirac_encoder_load (dirac_encoder_t *encoder, unsigned char *uncdata, int uncdata_size);
    00440
    00451 extern DllExport dirac_encoder_state_t dirac_encoder_output (dirac_encoder_t *encoder);
    00452
    00457 extern DllExport void dirac_encoder_end_sequence (dirac_encoder_t *encoder);
    00458
    00463 extern DllExport void dirac_encoder_close (dirac_encoder_t *encoder);
    00464
    00465 #endif
    00466 #ifdef __cplusplus
    00467 }
    00468 #endif

© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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