QDM2 decoder context. More...
Data Fields | |
int | nb_channels |
Parameters from codec header, do not change during playback. | |
int | channels |
number of channels | |
int | group_size |
size of frame group (16 frames per group) | |
int | fft_size |
size of FFT, in complex numbers | |
int | checksum_size |
size of data block, used also for checksum | |
int | group_order |
Parameters built from header parameters, do not change during playback. | |
int | fft_order |
order of FFT (actually fftorder+1) | |
int | fft_frame_size |
size of fft frame, in components (1 comples = re + im) | |
int | frame_size |
size of data frame | |
int | frequency_range |
int | sub_sampling |
subsampling: 0=25%, 1=50%, 2=100% */ | |
int | coeff_per_sb_select |
selector for "num. of coeffs. per subband" tables. Can be 0, 1, 2 | |
int | cm_table_select |
selector for "coding method" tables. Can be 0, 1 (from init: 0-4) | |
QDM2SubPacket | sub_packets [16] |
Packets and packet lists. | |
QDM2SubPNode | sub_packet_list_A [16] |
list of all packets | |
QDM2SubPNode | sub_packet_list_B [16] |
FFT packets B are on list. | |
int | sub_packets_B |
number of packets on 'B' list | |
QDM2SubPNode | sub_packet_list_C [16] |
packets with errors? | |
QDM2SubPNode | sub_packet_list_D [16] |
DCT packets. | |
FFTTone | fft_tones [1000] |
FFT and tones. | |
int | fft_tone_start |
int | fft_tone_end |
FFTCoefficient | fft_coefs [1000] |
int | fft_coefs_index |
int | fft_coefs_min_index [5] |
int | fft_coefs_max_index [5] |
int | fft_level_exp [6] |
RDFTContext | rdft_ctx |
QDM2FFT | fft |
const uint8_t * | compressed_data |
I/O data. | |
int | compressed_size |
float | output_buffer [1024] |
QDM2 decoder context.
Definition at line 129 of file qdm2.c.
number of channels
Definition at line 132 of file qdm2.c.
Referenced by qdm2_calculate_fft(), qdm2_decode(), qdm2_decode_frame(), qdm2_decode_init(), qdm2_fft_tone_synthesizer(), and qdm2_synthesis_filter().
size of data block, used also for checksum
Definition at line 135 of file qdm2.c.
Referenced by qdm2_decode(), qdm2_decode_frame(), qdm2_decode_init(), and qdm2_decode_super_block().
selector for "coding method" tables. Can be 0, 1 (from init: 0-4)
Definition at line 145 of file qdm2.c.
Referenced by process_subpacket_11(), and qdm2_decode_init().
selector for "num. of coeffs. per subband" tables. Can be 0, 1, 2
Definition at line 144 of file qdm2.c.
Referenced by average_quantized_coeffs(), fill_tone_level_array(), process_subpacket_9(), and qdm2_decode_init().
const uint8_t* QDM2Context::compressed_data |
I/O data.
Definition at line 168 of file qdm2.c.
Referenced by qdm2_decode(), and qdm2_decode_super_block().
Definition at line 169 of file qdm2.c.
Referenced by qdm2_decode(), and qdm2_decode_super_block().
Definition at line 165 of file qdm2.c.
Referenced by qdm2_calculate_fft(), and qdm2_fft_tone_synthesizer().
Definition at line 159 of file qdm2.c.
Referenced by qdm2_fft_init_coefficient(), and qdm2_fft_tone_synthesizer().
Definition at line 160 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), and qdm2_fft_init_coefficient().
Definition at line 162 of file qdm2.c.
Referenced by qdm2_decode_fft_packets().
Definition at line 161 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), qdm2_fft_init_coefficient(), and qdm2_fft_tone_synthesizer().
size of fft frame, in components (1 comples = re + im)
Definition at line 140 of file qdm2.c.
Referenced by qdm2_calculate_fft(), and qdm2_decode_init().
int QDM2Context::fft_level_exp[6] |
Definition at line 163 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), qdm2_decode_super_block(), and qdm2_fft_decode_tones().
order of FFT (actually fftorder+1)
Definition at line 139 of file qdm2.c.
Referenced by qdm2_decode_init().
size of FFT, in complex numbers
Definition at line 134 of file qdm2.c.
Referenced by qdm2_decode_init(), and qdm2_fft_tone_synthesizer().
Definition at line 158 of file qdm2.c.
Referenced by qdm2_fft_generate_tone(), and qdm2_fft_tone_synthesizer().
Definition at line 157 of file qdm2.c.
Referenced by qdm2_fft_tone_synthesizer().
FFT and tones.
Definition at line 156 of file qdm2.c.
Referenced by qdm2_fft_generate_tone(), and qdm2_fft_tone_synthesizer().
size of data frame
Definition at line 141 of file qdm2.c.
Referenced by qdm2_decode(), qdm2_decode_frame(), qdm2_decode_init(), and qdm2_synthesis_filter().
Definition at line 142 of file qdm2.c.
Referenced by qdm2_decode_init(), and qdm2_fft_decode_tones().
Parameters built from header parameters, do not change during playback.
order of frame group
Definition at line 138 of file qdm2.c.
Referenced by qdm2_decode_init(), and qdm2_fft_decode_tones().
size of frame group (16 frames per group)
Definition at line 133 of file qdm2.c.
Referenced by qdm2_decode_init(), and qdm2_fft_decode_tones().
Parameters from codec header, do not change during playback.
number of channels
Definition at line 131 of file qdm2.c.
Referenced by average_quantized_coeffs(), build_sb_samples_from_noise(), fill_tone_level_array(), init_tone_level_dequantization(), process_subpacket_11(), process_subpacket_9(), qdm2_calculate_fft(), qdm2_decode_init(), qdm2_fft_decode_tones(), qdm2_synthesis_filter(), and synthfilt_build_sb_samples().
float QDM2Context::output_buffer[1024] |
Definition at line 170 of file qdm2.c.
Referenced by qdm2_calculate_fft(), qdm2_decode(), and qdm2_synthesis_filter().
Definition at line 164 of file qdm2.c.
Referenced by qdm2_calculate_fft(), qdm2_decode_close(), and qdm2_decode_init().
FFT packets B are on list.
Definition at line 150 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), and qdm2_decode_super_block().
Packets and packet lists.
the packets themselves
Definition at line 148 of file qdm2.c.
Referenced by qdm2_decode_super_block().
number of packets on 'B' list
Definition at line 151 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), and qdm2_decode_super_block().
subsampling: 0=25%, 1=50%, 2=100% */
Definition at line 143 of file qdm2.c.
Referenced by average_quantized_coeffs(), fill_tone_level_array(), init_tone_level_dequantization(), process_subpacket_12(), process_subpacket_9(), qdm2_decode_fft_packets(), qdm2_decode_init(), and qdm2_synthesis_filter().