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Host 0x1F/0x31: Query current input/output speaker arrangement

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Seems to be completely unsupported in VST 2.4 hosts and all prior hosts seem to just return the exact data we output from VST_EFFECT_OPCODE_GET_SPEAKER_ARRANGEMENT.
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Xaymar
2025-08-08 01:24:10 +02:00
parent 0cf417c5d7
commit 899315f481
1 changed files with 48 additions and 0 deletions
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vst.h
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@@ -920,7 +920,22 @@ enum VST_HOST_OPCODE {
VST_HOST_OPCODE_1E = 0x1E,
/** Retrieve the hosts output speaker arrangement.
* Seems to always reply with the data provided in @ref VST_EFFECT_OPCODE_GET_SPEAKER_ARRANGEMENT p_ptr.
*
* @note (VST 2.3+) Available from VST 2.3 onwards.
* @deprecated (VST 2.4+) Deprecated from VST 2.4 onwards.
* @sa vst_speaker_arrangement_t
* @sa VST_EFFECT_OPCODE_SET_SPEAKER_ARRANGEMENT
* @sa VST_EFFECT_OPCODE_GET_SPEAKER_ARRANGEMENT
* @sa VST_HOST_OPCODE_GET_INPUT_SPEAKER_ARRANGEMENT
* @return Seems to be a valid pointer to @ref vst_speaker_arrangement_t if supported.
*/
VST_HOST_OPCODE_1F = 0x1F,
/** @sa VST_HOST_OPCODE_1F */
VST_HOST_OPCODE_GET_OUTPUT_SPEAKER_ARRANGEMENT = 0x1F,
/** @sa VST_HOST_OPCODE_1F */
VST_HOST_OPCODE_OUTPUT_GET_SPEAKER_ARRANGEMENT = 0x1F,
/** Retrieve the vendor name into the ptr buffer.
*
@@ -1035,6 +1050,39 @@ enum VST_HOST_OPCODE {
VST_HOST_OPCODE_2E = 0x2E,
VST_HOST_OPCODE_2F = 0x2F,
/**
* When queried by the plug-in shortly after @ref VST_EFFECT_OPCODE_PROGRAM_LOAD it often crashes compatible hosts
* with a memory access exception. This exception can be controlled with p_ptr but it's unclear what that is
* pointing at so far. In the event that it doesn't crash the memory address we pointed at changes to a path.
*
* @todo Figure out what p_ptr is.
* @note (VST 2.2+) Available from VST 2.2 onwards.
* @deprecated (VST 2.4+) Deprecated from VST 2.4 onwards.
* @param p_ptr A pointer to something
*/
VST_HOST_OPCODE_30 = 0x30,
//--------------------------------------------------------------------------------
// VST 2.3
//--------------------------------------------------------------------------------
/** Retrieve the hosts input speaker arrangement.
* Seems to always reply with the data provided in @ref VST_EFFECT_OPCODE_GET_SPEAKER_ARRANGEMENT p_int2.
*
* @note (VST 2.3+) Available from VST 2.3 onwards.
* @deprecated (VST 2.4+) Deprecated from VST 2.4 onwards.
* @sa vst_speaker_arrangement_t
* @sa VST_EFFECT_OPCODE_SET_SPEAKER_ARRANGEMENT
* @sa VST_EFFECT_OPCODE_GET_SPEAKER_ARRANGEMENT
* @sa VST_HOST_OPCODE_GET_OUTPUT_SPEAKER_ARRANGEMENT
* @return Seems to be a valid pointer to @ref vst_speaker_arrangement_t if supported.
*/
VST_HOST_OPCODE_31 = 0x31,
/** @sa VST_HOST_OPCODE_31 */
VST_HOST_OPCODE_GET_INPUT_SPEAKER_ARRANGEMENT = 0x31,
/** @sa VST_HOST_OPCODE_31 */
VST_HOST_OPCODE_INPUT_GET_SPEAKER_ARRANGEMENT = 0x31,
// Highest number of known OPCODE.
VST_HOST_OPCODE_MAX,