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FFmpeg
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FFmpeg
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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 | 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 [QDM2_MAX_FRAME_SIZE *MPA_MAX_CHANNELS *2] |
| MPADSPContext | mpadsp |
| Synthesis filter. | |
| float | synth_buf [MPA_MAX_CHANNELS][512 *2] |
| int | synth_buf_offset [MPA_MAX_CHANNELS] |
| float | sb_samples [MPA_MAX_CHANNELS][128][SBLIMIT] |
| float | samples [MPA_MAX_CHANNELS *MPA_FRAME_SIZE] |
| float | tone_level [MPA_MAX_CHANNELS][30][64] |
| Mixed temporary data used in decoding. | |
| int8_t | coding_method [MPA_MAX_CHANNELS][30][64] |
| int8_t | quantized_coeffs [MPA_MAX_CHANNELS][10][8] |
| int8_t | tone_level_idx_base [MPA_MAX_CHANNELS][30][8] |
| int8_t | tone_level_idx_hi1 [MPA_MAX_CHANNELS][3][8][8] |
| int8_t | tone_level_idx_mid [MPA_MAX_CHANNELS][26][8] |
| int8_t | tone_level_idx_hi2 [MPA_MAX_CHANNELS][26] |
| int8_t | tone_level_idx [MPA_MAX_CHANNELS][30][64] |
| int8_t | tone_level_idx_temp [MPA_MAX_CHANNELS][30][64] |
| int | has_errors |
| packet has errors | |
| int | superblocktype_2_3 |
| select fft tables and some algorithm based on superblock type | |
| int | do_synth_filter |
| used to perform or skip synthesis filter | |
| int | sub_packet |
| int | noise_idx |
| index for dithering noise table | |
| int QDM2Context::nb_channels |
Parameters from codec header, do not change during playback.
number of channels
Definition at line 133 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().
| int QDM2Context::channels |
number of channels
Definition at line 134 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().
| int QDM2Context::group_size |
size of frame group (16 frames per group)
Definition at line 135 of file qdm2.c.
Referenced by qdm2_decode_init(), and qdm2_fft_decode_tones().
| int QDM2Context::fft_size |
size of FFT, in complex numbers
Definition at line 136 of file qdm2.c.
Referenced by qdm2_calculate_fft(), qdm2_decode_init(), and qdm2_fft_tone_synthesizer().
| int QDM2Context::checksum_size |
size of data block, used also for checksum
Definition at line 137 of file qdm2.c.
Referenced by qdm2_decode(), qdm2_decode_frame(), qdm2_decode_init(), and qdm2_decode_super_block().
| int QDM2Context::group_order |
Parameters built from header parameters, do not change during playback.
order of frame group
Definition at line 140 of file qdm2.c.
Referenced by qdm2_decode_init(), and qdm2_fft_decode_tones().
| int QDM2Context::fft_order |
order of FFT (actually fftorder+1)
Definition at line 141 of file qdm2.c.
Referenced by qdm2_decode_init().
| int QDM2Context::frame_size |
size of data frame
Definition at line 142 of file qdm2.c.
Referenced by qdm2_decode(), qdm2_decode_frame(), qdm2_decode_init(), and qdm2_synthesis_filter().
| int QDM2Context::frequency_range |
Definition at line 143 of file qdm2.c.
Referenced by qdm2_decode_init(), and qdm2_fft_decode_tones().
| int QDM2Context::sub_sampling |
subsampling: 0=25%, 1=50%, 2=100% */
Definition at line 144 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().
| int QDM2Context::coeff_per_sb_select |
selector for "num. of coeffs. per subband" tables. Can be 0, 1, 2
Definition at line 145 of file qdm2.c.
Referenced by average_quantized_coeffs(), fill_tone_level_array(), process_subpacket_9(), and qdm2_decode_init().
| int QDM2Context::cm_table_select |
selector for "coding method" tables. Can be 0, 1 (from init: 0-4)
Definition at line 146 of file qdm2.c.
Referenced by process_subpacket_11(), and qdm2_decode_init().
| QDM2SubPacket QDM2Context::sub_packets[16] |
Packets and packet lists.
the packets themselves
Definition at line 149 of file qdm2.c.
Referenced by qdm2_decode_super_block().
| QDM2SubPNode QDM2Context::sub_packet_list_A[16] |
| QDM2SubPNode QDM2Context::sub_packet_list_B[16] |
FFT packets B are on list.
Definition at line 151 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), and qdm2_decode_super_block().
| int QDM2Context::sub_packets_B |
number of packets on 'B' list
Definition at line 152 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), and qdm2_decode_super_block().
| QDM2SubPNode QDM2Context::sub_packet_list_C[16] |
| QDM2SubPNode QDM2Context::sub_packet_list_D[16] |
| FFTTone QDM2Context::fft_tones[1000] |
FFT and tones.
Definition at line 157 of file qdm2.c.
Referenced by qdm2_fft_generate_tone(), and qdm2_fft_tone_synthesizer().
| int QDM2Context::fft_tone_start |
Definition at line 158 of file qdm2.c.
Referenced by qdm2_fft_tone_synthesizer().
| int QDM2Context::fft_tone_end |
Definition at line 159 of file qdm2.c.
Referenced by qdm2_fft_generate_tone(), and qdm2_fft_tone_synthesizer().
| FFTCoefficient QDM2Context::fft_coefs[1000] |
Definition at line 160 of file qdm2.c.
Referenced by qdm2_fft_init_coefficient(), and qdm2_fft_tone_synthesizer().
| int QDM2Context::fft_coefs_index |
Definition at line 161 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), and qdm2_fft_init_coefficient().
| int QDM2Context::fft_coefs_min_index[5] |
Definition at line 162 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), qdm2_fft_init_coefficient(), and qdm2_fft_tone_synthesizer().
| int QDM2Context::fft_coefs_max_index[5] |
Definition at line 163 of file qdm2.c.
Referenced by qdm2_decode_fft_packets().
| int QDM2Context::fft_level_exp[6] |
Definition at line 164 of file qdm2.c.
Referenced by qdm2_decode_fft_packets(), qdm2_decode_super_block(), and qdm2_fft_decode_tones().
| RDFTContext QDM2Context::rdft_ctx |
Definition at line 165 of file qdm2.c.
Referenced by qdm2_calculate_fft(), qdm2_decode_close(), and qdm2_decode_init().
| QDM2FFT QDM2Context::fft |
Definition at line 166 of file qdm2.c.
Referenced by qdm2_calculate_fft(), and qdm2_fft_tone_synthesizer().
| const uint8_t* QDM2Context::compressed_data |
I/O data.
Definition at line 169 of file qdm2.c.
Referenced by qdm2_decode(), and qdm2_decode_super_block().
| int QDM2Context::compressed_size |
Definition at line 170 of file qdm2.c.
Referenced by qdm2_decode(), and qdm2_decode_super_block().
| float QDM2Context::output_buffer[QDM2_MAX_FRAME_SIZE *MPA_MAX_CHANNELS *2] |
Definition at line 171 of file qdm2.c.
Referenced by qdm2_calculate_fft(), qdm2_decode(), and qdm2_synthesis_filter().
| MPADSPContext QDM2Context::mpadsp |
Synthesis filter.
Definition at line 174 of file qdm2.c.
Referenced by qdm2_decode_init(), and qdm2_synthesis_filter().
| float QDM2Context::synth_buf[MPA_MAX_CHANNELS][512 *2] |
Definition at line 175 of file qdm2.c.
Referenced by qdm2_synthesis_filter().
| int QDM2Context::synth_buf_offset[MPA_MAX_CHANNELS] |
Definition at line 176 of file qdm2.c.
Referenced by qdm2_synthesis_filter().
| float QDM2Context::sb_samples[MPA_MAX_CHANNELS][128][SBLIMIT] |
Definition at line 177 of file qdm2.c.
Referenced by build_sb_samples_from_noise(), qdm2_synthesis_filter(), and synthfilt_build_sb_samples().
| float QDM2Context::samples[MPA_MAX_CHANNELS *MPA_FRAME_SIZE] |
Definition at line 178 of file qdm2.c.
Referenced by qdm2_synthesis_filter().
| float QDM2Context::tone_level[MPA_MAX_CHANNELS][30][64] |
Mixed temporary data used in decoding.
Definition at line 181 of file qdm2.c.
Referenced by build_sb_samples_from_noise(), fill_tone_level_array(), and synthfilt_build_sb_samples().
| int8_t QDM2Context::coding_method[MPA_MAX_CHANNELS][30][64] |
Definition at line 182 of file qdm2.c.
Referenced by process_subpacket_11(), and synthfilt_build_sb_samples().
| int8_t QDM2Context::quantized_coeffs[MPA_MAX_CHANNELS][10][8] |
Definition at line 183 of file qdm2.c.
Referenced by average_quantized_coeffs(), fill_tone_level_array(), init_tone_level_dequantization(), and process_subpacket_9().
| int8_t QDM2Context::tone_level_idx_base[MPA_MAX_CHANNELS][30][8] |
Definition at line 184 of file qdm2.c.
Referenced by fill_tone_level_array().
| int8_t QDM2Context::tone_level_idx_hi1[MPA_MAX_CHANNELS][3][8][8] |
Definition at line 185 of file qdm2.c.
Referenced by fill_tone_level_array(), init_tone_level_dequantization(), and qdm2_decode_super_block().
| int8_t QDM2Context::tone_level_idx_mid[MPA_MAX_CHANNELS][26][8] |
Definition at line 186 of file qdm2.c.
Referenced by fill_tone_level_array(), init_tone_level_dequantization(), and qdm2_decode_super_block().
| int8_t QDM2Context::tone_level_idx_hi2[MPA_MAX_CHANNELS][26] |
Definition at line 187 of file qdm2.c.
Referenced by fill_tone_level_array(), init_tone_level_dequantization(), and qdm2_decode_super_block().
| int8_t QDM2Context::tone_level_idx[MPA_MAX_CHANNELS][30][64] |
Definition at line 188 of file qdm2.c.
Referenced by fill_tone_level_array(), and process_subpacket_11().
| int8_t QDM2Context::tone_level_idx_temp[MPA_MAX_CHANNELS][30][64] |
Definition at line 189 of file qdm2.c.
Referenced by process_subpacket_11().
| int QDM2Context::has_errors |
packet has errors
Definition at line 192 of file qdm2.c.
Referenced by qdm2_decode(), and qdm2_decode_super_block().
| int QDM2Context::superblocktype_2_3 |
select fft tables and some algorithm based on superblock type
Definition at line 193 of file qdm2.c.
Referenced by fill_tone_level_array(), process_subpacket_11(), qdm2_decode_super_block(), qdm2_fft_decode_tones(), and qdm2_fft_tone_synthesizer().
| int QDM2Context::do_synth_filter |
used to perform or skip synthesis filter
Definition at line 194 of file qdm2.c.
Referenced by qdm2_decode(), and qdm2_decode_super_block().
| int QDM2Context::sub_packet |
Definition at line 196 of file qdm2.c.
Referenced by qdm2_decode().
| int QDM2Context::noise_idx |
index for dithering noise table
Definition at line 197 of file qdm2.c.
Referenced by build_sb_samples_from_noise(), and synthfilt_build_sb_samples().
1.8.2
