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@ -45,35 +45,35 @@ static const char* sample_message = |
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"a sample of this file."; |
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typedef struct SubStream { |
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//! Set if a valid restart header has been read. Otherwise the substream cannot be decoded.
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/// Set if a valid restart header has been read. Otherwise the substream cannot be decoded.
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uint8_t restart_seen; |
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//@{
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/** restart header data */ |
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//! The type of noise to be used in the rematrix stage.
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/// The type of noise to be used in the rematrix stage.
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uint16_t noise_type; |
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//! The index of the first channel coded in this substream.
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/// The index of the first channel coded in this substream.
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uint8_t min_channel; |
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//! The index of the last channel coded in this substream.
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/// The index of the last channel coded in this substream.
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uint8_t max_channel; |
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//! The number of channels input into the rematrix stage.
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/// The number of channels input into the rematrix stage.
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uint8_t max_matrix_channel; |
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//! For each channel output by the matrix, the output channel to map it to
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/// For each channel output by the matrix, the output channel to map it to
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uint8_t ch_assign[MAX_CHANNELS]; |
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//! Channel coding parameters for channels in the substream
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/// Channel coding parameters for channels in the substream
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ChannelParams channel_params[MAX_CHANNELS]; |
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//! The left shift applied to random noise in 0x31ea substreams.
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/// The left shift applied to random noise in 0x31ea substreams.
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uint8_t noise_shift; |
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//! The current seed value for the pseudorandom noise generator(s).
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/// The current seed value for the pseudorandom noise generator(s).
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uint32_t noisegen_seed; |
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//! Set if the substream contains extra info to check the size of VLC blocks.
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/// Set if the substream contains extra info to check the size of VLC blocks.
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uint8_t data_check_present; |
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//! Bitmask of which parameter sets are conveyed in a decoding parameter block.
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/// Bitmask of which parameter sets are conveyed in a decoding parameter block.
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uint8_t param_presence_flags; |
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#define PARAM_BLOCKSIZE (1 << 7) |
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#define PARAM_MATRIX (1 << 6) |
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@ -88,32 +88,32 @@ typedef struct SubStream { |
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//@{
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/** matrix data */ |
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//! Number of matrices to be applied.
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/// Number of matrices to be applied.
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uint8_t num_primitive_matrices; |
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//! matrix output channel
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/// matrix output channel
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uint8_t matrix_out_ch[MAX_MATRICES]; |
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//! Whether the LSBs of the matrix output are encoded in the bitstream.
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/// Whether the LSBs of the matrix output are encoded in the bitstream.
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uint8_t lsb_bypass[MAX_MATRICES]; |
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//! Matrix coefficients, stored as 2.14 fixed point.
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/// Matrix coefficients, stored as 2.14 fixed point.
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int32_t matrix_coeff[MAX_MATRICES][MAX_CHANNELS]; |
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//! Left shift to apply to noise values in 0x31eb substreams.
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/// Left shift to apply to noise values in 0x31eb substreams.
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uint8_t matrix_noise_shift[MAX_MATRICES]; |
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//@}
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//! Left shift to apply to Huffman-decoded residuals.
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/// Left shift to apply to Huffman-decoded residuals.
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uint8_t quant_step_size[MAX_CHANNELS]; |
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//! number of PCM samples in current audio block
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/// number of PCM samples in current audio block
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uint16_t blocksize; |
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//! Number of PCM samples decoded so far in this frame.
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/// Number of PCM samples decoded so far in this frame.
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uint16_t blockpos; |
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//! Left shift to apply to decoded PCM values to get final 24-bit output.
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/// Left shift to apply to decoded PCM values to get final 24-bit output.
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int8_t output_shift[MAX_CHANNELS]; |
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//! Running XOR of all output samples.
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/// Running XOR of all output samples.
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int32_t lossless_check_data; |
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} SubStream; |
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@ -122,21 +122,21 @@ typedef struct MLPDecodeContext { |
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AVCodecContext *avctx; |
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AVFrame frame; |
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//! Current access unit being read has a major sync.
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/// Current access unit being read has a major sync.
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int is_major_sync_unit; |
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//! Set if a valid major sync block has been read. Otherwise no decoding is possible.
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/// Set if a valid major sync block has been read. Otherwise no decoding is possible.
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uint8_t params_valid; |
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//! Number of substreams contained within this stream.
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/// Number of substreams contained within this stream.
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uint8_t num_substreams; |
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//! Index of the last substream to decode - further substreams are skipped.
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/// Index of the last substream to decode - further substreams are skipped.
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uint8_t max_decoded_substream; |
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//! number of PCM samples contained in each frame
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/// number of PCM samples contained in each frame
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int access_unit_size; |
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//! next power of two above the number of samples in each frame
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/// next power of two above the number of samples in each frame
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int access_unit_size_pow2; |
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SubStream substream[MAX_SUBSTREAMS]; |
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