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Update the custom decoder example.

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This commit is contained in:
David Reid
2024-02-29 16:01:27 +10:00
parent 05756ff605
commit 8c2398b1ef
3 changed files with 200 additions and 166 deletions
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extras/miniaudio_libopus.h
+88 -2
View File
@@ -1,8 +1,11 @@
/*
This implements a data source that decodes Opus streams via libopus + libopusfile
This object can be plugged into any `ma_data_source_*()` API and can also be used as a custom
decoding backend. See the custom_decoder example.
The `ma_libopus` object can be plugged into any `ma_data_source_*()` API.
This can also be used as a custom decoding backend for `ma_decoder`. Use `ma_decoding_backend_libopus`
to wire up the custom decoding backend to `ma_decoder`. See the custom_decoder example for an example
of how to do this.
You need to include this file after miniaudio.h.
*/
@@ -39,6 +42,9 @@ MA_API ma_result ma_libopus_get_data_format(ma_libopus* pOpus, ma_format* pForma
MA_API ma_result ma_libopus_get_cursor_in_pcm_frames(ma_libopus* pOpus, ma_uint64* pCursor);
MA_API ma_result ma_libopus_get_length_in_pcm_frames(ma_libopus* pOpus, ma_uint64* pLength);
/* Decoding backend vtable. This is what you'll plug into ma_decoder_config.pBackendVTables. No user data required. */
extern const ma_decoding_backend_vtable* ma_decoding_backend_libopus;
#ifdef __cplusplus
}
#endif
@@ -493,4 +499,84 @@ MA_API ma_result ma_libopus_get_length_in_pcm_frames(ma_libopus* pOpus, ma_uint6
#endif
}
/*
The code below defines the vtable that you'll plug into your `ma_decoder_config` object.
*/
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;
ma_libopus* pOpus;
(void)pUserData;
pOpus = (ma_libopus*)ma_malloc(sizeof(*pOpus), pAllocationCallbacks);
if (pOpus == NULL) {
return MA_OUT_OF_MEMORY;
}
result = ma_libopus_init(onRead, onSeek, onTell, pReadSeekTellUserData, pConfig, pAllocationCallbacks, pOpus);
if (result != MA_SUCCESS) {
ma_free(pOpus, pAllocationCallbacks);
return result;
}
*ppBackend = pOpus;
return MA_SUCCESS;
}
static ma_result ma_decoding_backend_init_file__libopus(void* pUserData, const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
ma_result result;
ma_libopus* pOpus;
(void)pUserData;
pOpus = (ma_libopus*)ma_malloc(sizeof(*pOpus), pAllocationCallbacks);
if (pOpus == NULL) {
return MA_OUT_OF_MEMORY;
}
result = ma_libopus_init_file(pFilePath, pConfig, pAllocationCallbacks, pOpus);
if (result != MA_SUCCESS) {
ma_free(pOpus, pAllocationCallbacks);
return result;
}
*ppBackend = pOpus;
return MA_SUCCESS;
}
static void ma_decoding_backend_uninit__libopus(void* pUserData, ma_data_source* pBackend, const ma_allocation_callbacks* pAllocationCallbacks)
{
ma_libopus* pOpus = (ma_libopus*)pBackend;
(void)pUserData;
ma_libopus_uninit(pOpus, pAllocationCallbacks);
ma_free(pOpus, pAllocationCallbacks);
}
static ma_result ma_decoding_backend_get_channel_map__libopus(void* pUserData, ma_data_source* pBackend, ma_channel* pChannelMap, size_t channelMapCap)
{
ma_libopus* pOpus = (ma_libopus*)pBackend;
(void)pUserData;
return ma_libopus_get_data_format(pOpus, NULL, NULL, NULL, pChannelMap, channelMapCap);
}
static ma_decoding_backend_vtable g_ma_decoding_backend_vtable_libopus =
{
ma_decoding_backend_init__libopus,
ma_decoding_backend_init_file__libopus,
NULL, /* onInitFileW() */
NULL, /* onInitMemory() */
ma_decoding_backend_uninit__libopus
};
const ma_decoding_backend_vtable* ma_decoding_backend_libopus = &g_ma_decoding_backend_vtable_libopus;
#endif
extras/miniaudio_libvorbis.h
+88 -2
View File
@@ -1,8 +1,11 @@
/*
This implements a data source that decodes Vorbis streams via libvorbis + libvorbisfile
This object can be plugged into any `ma_data_source_*()` API and can also be used as a custom
decoding backend. See the custom_decoder example.
The `ma_libvorbis` object can be plugged into any `ma_data_source_*()` API.
This can also be used as a custom decoding backend for `ma_decoder`. Use `ma_decoding_backend_libvorbis`
to wire up the custom decoding backend to `ma_decoder`. See the custom_decoder example for an example
of how to do this.
You need to include this file after miniaudio.h.
*/
@@ -42,6 +45,9 @@ MA_API ma_result ma_libvorbis_get_data_format(ma_libvorbis* pVorbis, ma_format*
MA_API ma_result ma_libvorbis_get_cursor_in_pcm_frames(ma_libvorbis* pVorbis, ma_uint64* pCursor);
MA_API ma_result ma_libvorbis_get_length_in_pcm_frames(ma_libvorbis* pVorbis, ma_uint64* pLength);
/* Decoding backend vtable. This is what you'll plug into ma_decoder_config.pBackendVTables. No user data required. */
extern const ma_decoding_backend_vtable* ma_decoding_backend_libvorbis;
#ifdef __cplusplus
}
#endif
@@ -513,4 +519,84 @@ MA_API ma_result ma_libvorbis_get_length_in_pcm_frames(ma_libvorbis* pVorbis, ma
#endif
}
/*
The code below defines the vtable that you'll plug into your `ma_decoder_config` object.
*/
static ma_result ma_decoding_backend_init__libvorbis(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;
ma_libvorbis* pVorbis;
(void)pUserData;
pVorbis = (ma_libvorbis*)ma_malloc(sizeof(*pVorbis), pAllocationCallbacks);
if (pVorbis == NULL) {
return MA_OUT_OF_MEMORY;
}
result = ma_libvorbis_init(onRead, onSeek, onTell, pReadSeekTellUserData, pConfig, pAllocationCallbacks, pVorbis);
if (result != MA_SUCCESS) {
ma_free(pVorbis, pAllocationCallbacks);
return result;
}
*ppBackend = pVorbis;
return MA_SUCCESS;
}
static ma_result ma_decoding_backend_init_file__libvorbis(void* pUserData, const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
ma_result result;
ma_libvorbis* pVorbis;
(void)pUserData;
pVorbis = (ma_libvorbis*)ma_malloc(sizeof(*pVorbis), pAllocationCallbacks);
if (pVorbis == NULL) {
return MA_OUT_OF_MEMORY;
}
result = ma_libvorbis_init_file(pFilePath, pConfig, pAllocationCallbacks, pVorbis);
if (result != MA_SUCCESS) {
ma_free(pVorbis, pAllocationCallbacks);
return result;
}
*ppBackend = pVorbis;
return MA_SUCCESS;
}
static void ma_decoding_backend_uninit__libvorbis(void* pUserData, ma_data_source* pBackend, const ma_allocation_callbacks* pAllocationCallbacks)
{
ma_libvorbis* pVorbis = (ma_libvorbis*)pBackend;
(void)pUserData;
ma_libvorbis_uninit(pVorbis, pAllocationCallbacks);
ma_free(pVorbis, pAllocationCallbacks);
}
static ma_result ma_decoding_backend_get_channel_map__libvorbis(void* pUserData, ma_data_source* pBackend, ma_channel* pChannelMap, size_t channelMapCap)
{
ma_libvorbis* pVorbis = (ma_libvorbis*)pBackend;
(void)pUserData;
return ma_libvorbis_get_data_format(pVorbis, NULL, NULL, NULL, pChannelMap, channelMapCap);
}
static ma_decoding_backend_vtable g_ma_decoding_backend_vtable_libvorbis =
{
ma_decoding_backend_init__libvorbis,
ma_decoding_backend_init_file__libvorbis,
NULL, /* onInitFileW() */
NULL, /* onInitMemory() */
ma_decoding_backend_uninit__libvorbis
};
const ma_decoding_backend_vtable* ma_decoding_backend_libvorbis = &g_ma_decoding_backend_vtable_libvorbis;
#endif