gstreamer/subprojects/gst-plugins-bad/sys/mediafoundation/gstmfmp3dec.cpp

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/* GStreamer
* Copyright (C) 2022 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-mfmp3dec
* @title: mfmp3dec
*
* This element decodes MP3 compressed data into RAW audio data.
*
* Since: 1.22
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/pbutils/pbutils.h>
#include "gstmfaudiodecoder.h"
#include "gstmfmp3dec.h"
#include <wrl.h>
#include <string.h>
/* *INDENT-OFF* */
using namespace Microsoft::WRL;
/* *INDENT-ON* */
GST_DEBUG_CATEGORY (gst_mf_mp3_dec_debug);
#define GST_CAT_DEFAULT gst_mf_mp3_dec_debug
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/mpeg, "
"mpegversion = (int) 1, layer = (int) 3, channels = (int) [1, 2], "
"rate = (int) [8000, 48000]")
);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw, "
"format = (string) " GST_AUDIO_NE (S16) ", "
"layout = (string) interleaved, "
"channels = (int) [1, 2], rate = (int) [8000, 48000]")
);
typedef struct _GstMFMp3Dec
{
GstMFAudioDecoder parent;
} GstMFMp3Dec;
typedef struct _GstMFMp3DecClass
{
GstMFAudioDecoderClass parent_class;
} GstMFMp3DecClass;
static GTypeClass *parent_class = nullptr;
static gboolean gst_mf_mp3_dec_set_format (GstMFAudioDecoder * decoder,
GstMFTransform * transform, GstCaps * caps);
static void
gst_mf_mp3_dec_class_init (GstMFMp3DecClass * klass, gpointer data)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstMFAudioDecoderClass *decoder_class = GST_MF_AUDIO_DECODER_CLASS (klass);
GstMFAudioDecoderClassData *cdata = (GstMFAudioDecoderClassData *) data;
gchar *long_name;
parent_class = (GTypeClass *) g_type_class_peek_parent (klass);
long_name = g_strdup_printf ("Media Foundation %s", cdata->device_name);
gst_element_class_set_metadata (element_class, long_name,
"Codec/Decoder/Audio",
"Microsoft Media Foundation MP3 Decoder",
"Seungha Yang <seungha@centricular.com>");
g_free (long_name);
gst_element_class_add_static_pad_template (element_class, &sink_template);
gst_element_class_add_static_pad_template (element_class, &src_template);
decoder_class->set_format = GST_DEBUG_FUNCPTR (gst_mf_mp3_dec_set_format);
decoder_class->codec_id = MFAudioFormat_MP3;
decoder_class->enum_flags = cdata->enum_flags;
decoder_class->device_index = cdata->device_index;
g_free (cdata->device_name);
g_free (cdata);
}
static void
gst_mf_mp3_dec_init (GstMFMp3Dec * self)
{
}
static gboolean
gst_mf_mp3_dec_set_format (GstMFAudioDecoder * decoder,
GstMFTransform * transform, GstCaps * caps)
{
GstMFMp3Dec *self = (GstMFMp3Dec *) decoder;
HRESULT hr;
ComPtr < IMFMediaType > in_type;
ComPtr < IMFMediaType > out_type;
GstAudioInfo in_audio_info, out_audio_info;
GList *output_list, *iter;
GstCaps *out_caps;
if (!gst_audio_info_from_caps (&in_audio_info, caps)) {
GST_ERROR_OBJECT (self, "Failed to get audio info from caps");
return FALSE;
}
hr = MFCreateMediaType (&in_type);
if (!gst_mf_result (hr))
return FALSE;
hr = in_type->SetGUID (MF_MT_MAJOR_TYPE, MFMediaType_Audio);
if (!gst_mf_result (hr))
return FALSE;
hr = in_type->SetGUID (MF_MT_SUBTYPE, MFAudioFormat_MP3);
if (!gst_mf_result (hr))
return FALSE;
hr = in_type->SetUINT32 (MF_MT_AUDIO_NUM_CHANNELS, in_audio_info.channels);
if (!gst_mf_result (hr))
return FALSE;
hr = in_type->SetUINT32 (MF_MT_AUDIO_SAMPLES_PER_SECOND, in_audio_info.rate);
if (!gst_mf_result (hr))
return FALSE;
if (!gst_mf_transform_set_input_type (transform, in_type.Get ())) {
GST_ERROR_OBJECT (self, "Failed to set format");
return FALSE;
}
if (!gst_mf_transform_get_output_available_types (transform, &output_list)) {
GST_ERROR_OBJECT (self, "Failed to get output types");
return FALSE;
}
for (iter = output_list; iter; iter = g_list_next (iter)) {
GUID guid;
IMFMediaType *type = (IMFMediaType *) iter->data;
UINT32 bps;
hr = type->GetGUID (MF_MT_MAJOR_TYPE, &guid);
if (!gst_mf_result (hr))
continue;
if (!IsEqualGUID (guid, MFMediaType_Audio))
continue;
hr = type->GetGUID (MF_MT_SUBTYPE, &guid);
if (!gst_mf_result (hr))
continue;
if (!IsEqualGUID (guid, MFAudioFormat_PCM))
continue;
hr = type->GetUINT32 (MF_MT_AUDIO_BITS_PER_SAMPLE, &bps);
if (!gst_mf_result (hr))
continue;
if (bps != 16)
continue;
out_type = type;
break;
}
g_list_free_full (output_list, (GDestroyNotify) gst_mf_media_type_release);
if (!out_type) {
GST_ERROR_OBJECT (self, "Failed to select output type");
return FALSE;
}
if (!gst_mf_transform_set_output_type (transform, out_type.Get ())) {
GST_ERROR_OBJECT (self, "Failed to select output type");
return FALSE;
}
out_caps = gst_mf_media_type_to_caps (out_type.Get ());
if (!out_caps) {
GST_ERROR_OBJECT (self, "Failed to get output caps");
return FALSE;
}
GST_DEBUG_OBJECT (self, "Output caps %" GST_PTR_FORMAT, out_caps);
if (!gst_audio_info_from_caps (&out_audio_info, out_caps)) {
GST_ERROR_OBJECT (self,
"Failed to convert caps to audio info %" GST_PTR_FORMAT, out_caps);
gst_caps_unref (out_caps);
}
gst_caps_unref (out_caps);
return gst_audio_decoder_set_output_format (GST_AUDIO_DECODER (self),
&out_audio_info);
}
static void
gst_mf_mp3_dec_register (GstPlugin * plugin, guint rank,
const gchar * device_name, guint32 enum_flags, guint device_index)
{
GType type;
GstMFAudioDecoderClassData *cdata;
GTypeInfo type_info = {
sizeof (GstMFMp3DecClass),
nullptr,
nullptr,
(GClassInitFunc) gst_mf_mp3_dec_class_init,
nullptr,
nullptr,
sizeof (GstMFMp3Dec),
0,
(GInstanceInitFunc) gst_mf_mp3_dec_init,
};
cdata = g_new0 (GstMFAudioDecoderClassData, 1);
cdata->device_name = g_strdup (device_name);
cdata->enum_flags = enum_flags;
cdata->device_index = device_index;
type_info.class_data = cdata;
type = g_type_register_static (GST_TYPE_MF_AUDIO_DECODER, "GstMFMp3Dec",
&type_info, (GTypeFlags) 0);
if (!gst_element_register (plugin, "mfmp3dec", rank, type))
GST_WARNING ("Failed to register plugin");
}
static gboolean
gst_mf_mp3_dec_plugin_init_internal (GstPlugin * plugin, guint rank,
GstMFTransform * transform, guint device_index, guint32 enum_flags)
{
gchar *device_name = nullptr;
if (!gst_mf_transform_open (transform))
return FALSE;
g_object_get (transform, "device-name", &device_name, nullptr);
if (!device_name) {
GST_WARNING_OBJECT (transform, "Unknown device name");
return FALSE;
}
gst_mf_mp3_dec_register (plugin, rank, device_name, enum_flags, device_index);
g_free (device_name);
return TRUE;
}
void
gst_mf_mp3_dec_plugin_init (GstPlugin * plugin, guint rank)
{
GstMFTransformEnumParams enum_params = { 0, };
MFT_REGISTER_TYPE_INFO input_type;
GstMFTransform *transform;
gint i;
gboolean do_next;
GST_DEBUG_CATEGORY_INIT (gst_mf_mp3_dec_debug, "mfmp3dec", 0, "mfmp3dec");
input_type.guidMajorType = MFMediaType_Audio;
input_type.guidSubtype = MFAudioFormat_MP3;
enum_params.category = MFT_CATEGORY_AUDIO_DECODER;
enum_params.enum_flags = (MFT_ENUM_FLAG_SYNCMFT |
MFT_ENUM_FLAG_SORTANDFILTER | MFT_ENUM_FLAG_SORTANDFILTER_APPROVED_ONLY);
enum_params.input_typeinfo = &input_type;
i = 0;
do {
enum_params.device_index = i++;
transform = gst_mf_transform_new (&enum_params);
do_next = TRUE;
if (!transform) {
do_next = FALSE;
} else {
if (gst_mf_mp3_dec_plugin_init_internal (plugin, rank, transform,
enum_params.device_index, enum_params.enum_flags)) {
do_next = FALSE;
}
gst_clear_object (&transform);
}
} while (do_next);
}