merge FAAD2 - the GPL AAC decoder library.

xine_decoder.c is working, but demux_qt must send some needed
initialization data. currently it's hardcoded to play my test stream, so
it's not usable yet.

CVS patchset: 2267
CVS date: 2002/07/14 23:43:01

1 files changed, 360 insertions, 0 deletions

diff --git a/src/libfaad/syntax.h b/src/libfaad/syntax.h
new file mode 100644
index 000000000..ef3a362cd
--- /dev/null
+++ b/src/libfaad/syntax.h
@@ -0,0 +1,360 @@
+/*
+** FAAD - Freeware Advanced Audio Decoder
+** Copyright (C) 2002 M. Bakker
+**  
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+** 
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+** 
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software 
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** $Id: syntax.h,v 1.1 2002/07/14 23:43:01 miguelfreitas Exp $
+**/
+
+#ifndef __SYNTAX_H__
+#define __SYNTAX_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "bits.h"
+
+#define MAIN    0
+#define LC      1
+#define SSR     2
+#define LTP     3
+#define LD      23
+#define ER_LC   17
+#define ER_LTP  19
+#define DRM_ER_LC   27 /* special object type for DRM */
+
+
+/* First object type that has ER */
+#define ER_OBJECT_START 17
+
+
+/* Bitstream */
+#define LEN_SE_ID 3
+#define LEN_TAG   4
+#define LEN_BYTE  8
+
+#define EXT_FILL_DATA     1
+#define EXT_DYNAMIC_RANGE 11
+
+/* Syntax elements */
+#define ID_SCE 0x0
+#define ID_CPE 0x1
+#define ID_CCE 0x2
+#define ID_LFE 0x3
+#define ID_DSE 0x4
+#define ID_PCE 0x5
+#define ID_FIL 0x6
+#define ID_END 0x7
+
+#define MAX_CHANNELS        64
+#define MAX_SYNTAX_ELEMENTS 48
+#define MAX_WINDOW_GROUPS    8
+#define MAX_SFB             51
+#define MAX_LTP_SFB         40
+#define MAX_LTP_SFB_S        8
+
+
+#define ONLY_LONG_SEQUENCE   0x0
+#define LONG_START_SEQUENCE  0x1
+#define EIGHT_SHORT_SEQUENCE 0x2
+#define LONG_STOP_SEQUENCE   0x3
+
+#define ZERO_HCB       0
+#define FIRST_PAIR_HCB 5
+#define ESC_HCB        11
+#define QUAD_LEN       4
+#define PAIR_LEN       2
+#define BOOKSCL        12
+#define NOISE_HCB      13
+#define INTENSITY_HCB2 14
+#define INTENSITY_HCB  15
+
+
+typedef struct
+{
+    uint8_t element_instance_tag;
+    uint8_t object_type;
+    uint8_t sf_index;
+    uint8_t num_front_channel_elements;
+    uint8_t num_side_channel_elements;
+    uint8_t num_back_channel_elements;
+    uint8_t num_lfe_channel_elements;
+    uint8_t num_assoc_data_elements;
+    uint8_t num_valid_cc_elements;
+    uint8_t mono_mixdown_present;
+    uint8_t mono_mixdown_element_number;
+    uint8_t stereo_mixdown_present;
+    uint8_t stereo_mixdown_element_number;
+    uint8_t matrix_mixdown_idx_present;
+    uint8_t pseudo_surround_enable;
+    uint8_t matrix_mixdown_idx;
+    uint8_t front_element_is_cpe[16];
+    uint8_t front_element_tag_select[16];
+    uint8_t side_element_is_cpe[16];
+    uint8_t side_element_tag_select[16];
+    uint8_t back_element_is_cpe[16];
+    uint8_t back_element_tag_select[16];
+    uint8_t lfe_element_tag_select[16];
+    uint8_t assoc_data_element_tag_select[16];
+    uint8_t cc_element_is_ind_sw[16];
+    uint8_t valid_cc_element_tag_select[16];
+
+    uint8_t channels;
+
+    uint8_t comment_field_bytes;
+    uint8_t comment_field_data[257];
+} program_config;
+
+typedef struct
+{
+    uint16_t syncword;
+    uint8_t id;
+    uint8_t layer;
+    uint8_t protection_absent;
+    uint8_t profile;
+    uint8_t sf_index;
+    uint8_t private_bit;
+    uint8_t channel_configuration;
+    uint8_t original;
+    uint8_t home;
+    uint8_t emphasis;
+    uint8_t copyright_identification_bit;
+    uint8_t copyright_identification_start;
+    uint16_t aac_frame_length;
+    uint16_t adts_buffer_fullness;
+    uint8_t no_raw_data_blocks_in_frame;
+    uint16_t crc_check;
+} adts_header;
+
+typedef struct
+{
+    uint8_t copyright_id_present;
+    int8_t copyright_id[10];
+    uint8_t original_copy;
+    uint8_t home;
+    uint8_t bitstream_type;
+    uint32_t bitrate;
+    uint8_t num_program_config_elements;
+    uint32_t adif_buffer_fullness;
+
+    program_config pce;
+} adif_header;
+
+typedef struct
+{
+    uint8_t last_band;
+    uint8_t data_present;
+    uint16_t lag;
+    uint8_t lag_update;
+    uint8_t coef;
+    uint8_t long_used[51];
+    uint8_t short_used[8];
+    uint8_t short_lag_present[8];
+    uint8_t short_lag[8];
+} ltp_info;
+
+typedef struct
+{
+    uint8_t limit;
+    uint8_t predictor_reset;
+    uint8_t predictor_reset_group_number;
+    uint8_t prediction_used[41];
+} pred_info;
+
+typedef struct
+{
+    uint8_t number_pulse;
+    uint8_t pulse_start_sfb;
+    uint8_t pulse_offset[4];
+    uint8_t pulse_amp[4];
+} pulse_info;
+
+typedef struct
+{
+    uint8_t n_filt[8];
+    uint8_t coef_res[8];
+    uint8_t length[8][4];
+    uint8_t order[8][4];
+    uint8_t direction[8][4];
+    uint8_t coef_compress[8][4];
+    uint8_t coef[8][4][32];
+} tns_info;
+
+typedef struct
+{
+    uint8_t present;
+
+    uint8_t num_bands;
+    uint8_t pce_instance_tag;
+    uint8_t excluded_chns_present;
+    uint8_t band_top[17];
+    uint8_t prog_ref_level;
+    uint8_t dyn_rng_sgn[17];
+    uint8_t dyn_rng_ctl[17];
+    uint8_t exclude_mask[MAX_CHANNELS];
+    uint8_t additional_excluded_chns[MAX_CHANNELS];
+
+    real_t ctrl1;
+    real_t ctrl2;
+} drc_info;
+
+typedef struct
+{
+    uint8_t max_sfb;
+
+    uint8_t num_swb;
+    uint8_t num_window_groups;
+    uint8_t num_windows;
+    uint8_t window_sequence;
+    uint8_t window_group_length[8];
+    uint8_t window_shape;
+    uint8_t scale_factor_grouping;
+    uint16_t sect_sfb_offset[8][15*8];
+    uint16_t swb_offset[51];
+
+    uint8_t sect_cb[8][15*8];
+    uint16_t sect_start[8][15*8];
+    uint16_t sect_end[8][15*8];
+    uint8_t sfb_cb[8][8*15];
+    uint8_t num_sec[8]; /* number of sections in a group */
+
+    uint8_t global_gain;
+    uint16_t scale_factors[8][51];
+
+    uint8_t ms_mask_present;
+    uint8_t ms_used[MAX_WINDOW_GROUPS][MAX_SFB];
+
+    uint8_t pulse_data_present;
+    uint8_t tns_data_present;
+    uint8_t gain_control_data_present;
+    uint8_t predictor_data_present;
+
+    pulse_info pul;
+    tns_info tns;
+    pred_info pred;
+    ltp_info ltp;
+    ltp_info ltp2;
+
+#ifdef ERROR_RESILIENCE
+    /* ER data */
+    uint16_t length_of_reordered_spectral_data;
+    uint8_t length_of_longest_codeword;
+#endif
+} ic_stream; /* individual channel stream */
+
+typedef struct
+{
+    uint8_t ele_id;
+
+    uint8_t channel;
+    uint8_t paired_channel;
+
+    uint8_t element_instance_tag;
+    uint8_t common_window;
+
+    ic_stream ics1;
+    ic_stream ics2;
+} element; /* syntax element (SCE, CPE, LFE) */
+
+
+uint8_t GASpecificConfig(bitfile *ld, uint8_t *channelConfiguration,
+                         uint8_t object_type,
+                         uint8_t *aacSectionDataResilienceFlag,
+                         uint8_t *aacScalefactorDataResilienceFlag,
+                         uint8_t *aacSpectralDataResilienceFlag,
+                         uint8_t *frameLengthFlag);
+uint8_t raw_data_block(bitfile *ld, int16_t ***spec_data, real_t ***spec_coef,
+                       element ***syntax_elements,
+                       uint8_t *channels, uint8_t *ele, uint8_t *ch_ele,
+                       uint16_t frame_len, uint8_t sf_index, uint8_t object_type,
+                       drc_info *drc);
+uint8_t single_lfe_channel_element(element *sce, bitfile *ld, int16_t *spec_data,
+                                   uint8_t sf_index, uint8_t object_type,
+                                   uint16_t frame_len
+#ifdef ERROR_RESILIENCE
+                                   ,uint8_t aacSectionDataResilienceFlag,
+                                   uint8_t aacScalefactorDataResilienceFlag,
+                                   uint8_t aacSpectralDataResilienceFlag
+#endif
+                                   );
+uint8_t channel_pair_element(element *cpe, bitfile *ld, int16_t *spec_data1,
+                             int16_t *spec_data2, uint8_t sf_index, uint8_t object_type,
+                             uint16_t frame_len
+#ifdef ERROR_RESILIENCE
+                             ,uint8_t aacSectionDataResilienceFlag,
+                             uint8_t aacScalefactorDataResilienceFlag,
+                             uint8_t aacSpectralDataResilienceFlag
+#endif
+                             );
+uint16_t data_stream_element(bitfile *ld);
+uint8_t program_config_element(program_config *pce, bitfile *ld);
+uint8_t fill_element(bitfile *ld, drc_info *drc
+#ifdef SBR
+                     ,uint8_t next_ele_id
+#endif
+                     );
+uint8_t adts_frame(adts_header *adts, bitfile *ld);
+void get_adif_header(adif_header *adif, bitfile *ld);
+
+
+/* static functions */
+static uint8_t individual_channel_stream(element *ele, bitfile *ld,
+                                     ic_stream *ics, uint8_t scal_flag,
+                                     int16_t *spec_data, uint8_t sf_index,
+                                     uint8_t object_type, uint16_t frame_len
+#ifdef ERROR_RESILIENCE
+                                     ,uint8_t aacSectionDataResilienceFlag,
+                                     uint8_t aacScalefactorDataResilienceFlag,
+                                     uint8_t aacSpectralDataResilienceFlag
+#endif
+                                     );
+static uint8_t ics_info(ic_stream *ics, bitfile *ld, uint8_t common_window,
+                        uint8_t fs_index, uint8_t object_type,
+                        uint16_t frame_len);
+static void section_data(ic_stream *ics, bitfile *ld
+#ifdef ERROR_RESILIENCE
+                         ,uint8_t aacSectionDataResilienceFlag
+#endif
+                         );
+static uint8_t scale_factor_data(ic_stream *ics, bitfile *ld
+#ifdef ERROR_RESILIENCE
+                                 ,uint8_t aacScalefactorDataResilienceFlag
+#endif
+                                 );
+static void gain_control_data(bitfile *ld, ic_stream *ics);
+static uint8_t spectral_data(ic_stream *ics, bitfile *ld, int16_t *spectral_data,
+                             uint16_t frame_len);
+static uint16_t extension_payload(bitfile *ld, drc_info *drc, uint16_t count);
+#ifdef ERROR_RESILIENCE
+uint8_t reordered_spectral_data(ic_stream *ics, bitfile *ld, int16_t *spectral_data,
+                                uint16_t frame_len, uint8_t aacSectionDataResilienceFlag);
+#endif
+static void pulse_data(pulse_info *pul, bitfile *ld);
+static void tns_data(ic_stream *ics, tns_info *tns, bitfile *ld);
+static void ltp_data(ic_stream *ics, ltp_info *ltp, bitfile *ld,
+                     uint8_t object_type);
+static uint8_t adts_fixed_header(adts_header *adts, bitfile *ld);
+static void adts_variable_header(adts_header *adts, bitfile *ld);
+static void adts_error_check(adts_header *adts, bitfile *ld);
+static uint8_t dynamic_range_info(bitfile *ld, drc_info *drc);
+static uint8_t excluded_channels(bitfile *ld, drc_info *drc);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif