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Update to the decoding backend system.

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The `onGetEncodingFormat` callback has been removed and replaced with an
`onInfo`. This new callback fills out a struct with the supported
encoding format (is recognized by miniaudio), in addition to the name of
the decoding backend, and the decoding library and vendor.
This commit is contained in:
David Reid
2026-01-17 14:49:26 +10:00
parent 3ab17977ea
commit cb0e6afe70
3 changed files with 155 additions and 121 deletions
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extras/decoders/libopus/miniaudio_libopus.c
+12 -22
View File
@@ -465,6 +465,16 @@ MA_API ma_result ma_libopus_get_length_in_pcm_frames(ma_libopus* pOpus, ma_uint6
The code below defines the vtable that you'll plug into your `ma_decoder_config` object.
*/
#if !defined(MA_NO_LIBOPUS)
static void ma_decoding_backend_info__libopus(void* pUserData, ma_decoding_backend_info* pInfo)
{
(void)pUserData;
pInfo->pName = "Opus";
pInfo->pLibraryName = "libopus";
pInfo->pVendor = "Xiph.Org";
pInfo->encodingFormat = ma_encoding_format_opus;
}
static ma_result ma_decoding_backend_init__libopus(void* pUserData, ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
ma_result result;
@@ -521,34 +531,14 @@ static void ma_decoding_backend_uninit__libopus(void* pUserData, ma_data_source*
ma_free(pOpus, pAllocationCallbacks);
}
static ma_encoding_format ma_decoding_backend_get_encoding_format__libopus(void* pUserData, ma_data_source* pBackend)
{
(void)pUserData;
(void)pBackend;
/*
When pBackend is null, return ma_encoding_format_unknown if the backend supports multiple
formats. An example might be an FFmpeg backend. If the backend only supports a single format,
like this one, return the format directly (if it's not recognized by miniaudio, return
ma_encoding_format_unknown).
When pBackend is non-null, return the encoded format of the data source. If the format is not
recognized by miniaudio, return ma_encoding_format_unknown.
Since this backend only operates on Opus streams, we can just return ma_encoding_format_opus
in all cases.
*/
return ma_encoding_format_opus;
}
static ma_decoding_backend_vtable ma_gDecodingBackendVTable_libopus =
{
ma_decoding_backend_info__libopus,
ma_decoding_backend_init__libopus,
ma_decoding_backend_init_file__libopus,
NULL, /* onInitFileW() */
NULL, /* onInitMemory() */
ma_decoding_backend_uninit__libopus,
ma_decoding_backend_get_encoding_format__libopus
ma_decoding_backend_uninit__libopus
};
ma_decoding_backend_vtable* ma_decoding_backend_libopus = &ma_gDecodingBackendVTable_libopus;
#else