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libquicktime
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Audio related definitions and functions. More...
Modules | |
| Audio decoding | |
| Audio related definitions and functions (reading) | |
| Audio encoding | |
| Audio related definitions and functions (writing) | |
| Multichannel support | |
Enumerations | |
| enum | lqt_sample_format_t { LQT_SAMPLE_UNDEFINED = 0, LQT_SAMPLE_INT8, LQT_SAMPLE_UINT8, LQT_SAMPLE_INT16, LQT_SAMPLE_INT32, LQT_SAMPLE_FLOAT, LQT_SAMPLE_DOUBLE } |
| Sample format definitions for audio. More... | |
Functions | |
| void | lqt_set_audio_parameter (quicktime_t *file, int track, const char *key, const void *value) |
| Set a codec parameter for an audio track. More... | |
| const char * | lqt_sample_format_to_string (lqt_sample_format_t sampleformat) |
| Get a human readable description for a sample format. More... | |
| lqt_sample_format_t | lqt_get_sample_format (quicktime_t *file, int track) |
| Return the sample format used natively by the codec. More... | |
Audio related definitions and functions.
| enum lqt_sample_format_t |
Sample format definitions for audio.
This defines the datatype for audio samples, which will be used by a particular codec. You'll need this, if you want to use lqt_decode_audio_raw or lqt_encode_audio_raw . Byte order of the data is always machine native. Endianess conversion is responsibility of the codec.
| void lqt_set_audio_parameter | ( | quicktime_t * | file, |
| int | track, | ||
| const char * | key, | ||
| const void * | value | ||
| ) |
Set a codec parameter for an audio track.
| file | A quicktime handle |
| track | Track index (starting with 0) |
| key | Short name of the parameter |
| value | Parameter value. |
For integer parameters, value must be of the type int*. For string parameters, use char*. For floating-point parameters, use float*.
| const char* lqt_sample_format_to_string | ( | lqt_sample_format_t | sampleformat | ) |
Get a human readable description for a sample format.
| sampleformat | A sampleformat |
| lqt_sample_format_t lqt_get_sample_format | ( | quicktime_t * | file, |
| int | track | ||
| ) |
Return the sample format used natively by the codec.
| file | A quicktime handle |
| track | Track index (starting with 0) |
Use this function if you want to use lqt_decode_audio_raw or lqt_encode_audio_raw to bypass libquicktimes internal sample format conversion routines.
Note Some codecs call
1.8.11