mirror of https://github.com/mpv-player/mpv
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
#ifndef QUICKTIME_IMA4_H
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#define QUICKTIME_IMA4_H
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//#include "quicktime.h"
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//#include "inttypes.h"
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/* Known by divine revelation */
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#define IMA4_BLOCK_SIZE 0x22
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#define IMA4_SAMPLES_PER_BLOCK 0x40
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// in: out buffer, in buffer (IMA4_BLOCK_SIZE bytes), outbuf max size
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// return: number of samples decoded
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int ima4_decode_block(unsigned short *output, unsigned char *input, int maxlen);
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#if 0
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typedef struct
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{
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/* During decoding the work_buffer contains the most recently read chunk. */
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/* During encoding the work_buffer contains interlaced overflow samples */
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/* from the last chunk written. */
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int16_t *work_buffer;
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unsigned char *read_buffer; /* Temporary buffer for drive reads. */
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/* Starting information for all channels during encoding. */
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int *last_samples, *last_indexes;
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long chunk; /* Number of chunk in work buffer */
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int buffer_channel; /* Channel of work buffer */
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/* Number of samples in largest chunk read. */
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/* Number of samples plus overflow in largest chunk write, interlaced. */
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long work_size;
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long work_overflow; /* Number of overflow samples from the last chunk written. */
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long read_size; /* Size of read buffer. */
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} quicktime_ima4_codec_t;
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#endif
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#endif
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