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annotate DPF-Prymula-audioplugins/dpf/distrho/src/clap/process.h @ 3:84e66ea83026

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DPF-Prymula-audioplugins-0.231015-2
author prymula <prymula76@outlook.com>
date Mon, 16 Oct 2023 21:53:34 +0200
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1 #pragma once
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2
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3 #include "events.h"
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4 #include "audio-buffer.h"
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5
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6 #ifdef __cplusplus
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7 extern "C" {
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8 #endif
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9
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10 enum {
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11 // Processing failed. The output buffer must be discarded.
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12 CLAP_PROCESS_ERROR = 0,
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13
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14 // Processing succeeded, keep processing.
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15 CLAP_PROCESS_CONTINUE = 1,
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16
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17 // Processing succeeded, keep processing if the output is not quiet.
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18 CLAP_PROCESS_CONTINUE_IF_NOT_QUIET = 2,
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19
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20 // Rely upon the plugin's tail to determine if the plugin should continue to process.
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21 // see clap_plugin_tail
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22 CLAP_PROCESS_TAIL = 3,
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23
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24 // Processing succeeded, but no more processing is required,
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25 // until the next event or variation in audio input.
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26 CLAP_PROCESS_SLEEP = 4,
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27 };
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28 typedef int32_t clap_process_status;
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29
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30 typedef struct clap_process {
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31 // A steady sample time counter.
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32 // This field can be used to calculate the sleep duration between two process calls.
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33 // This value may be specific to this plugin instance and have no relation to what
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34 // other plugin instances may receive.
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35 //
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36 // Set to -1 if not available, otherwise the value must be greater or equal to 0,
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37 // and must be increased by at least `frames_count` for the next call to process.
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38 int64_t steady_time;
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39
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40 // Number of frames to process
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41 uint32_t frames_count;
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42
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43 // time info at sample 0
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44 // If null, then this is a free running host, no transport events will be provided
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45 const clap_event_transport_t *transport;
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46
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47 // Audio buffers, they must have the same count as specified
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48 // by clap_plugin_audio_ports->count().
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49 // The index maps to clap_plugin_audio_ports->get().
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50 // Input buffer and its contents are read-only.
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51 const clap_audio_buffer_t *audio_inputs;
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52 clap_audio_buffer_t *audio_outputs;
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53 uint32_t audio_inputs_count;
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54 uint32_t audio_outputs_count;
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55
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56 // Input and output events.
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57 //
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58 // Events must be sorted by time.
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59 // The input event list can't be modified.
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60 const clap_input_events_t *in_events;
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61 const clap_output_events_t *out_events;
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62 } clap_process_t;
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63
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64 #ifdef __cplusplus
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65 }
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66 #endif