1 /* 2 * GStreamer DirectShow codecs wrapper 3 * Copyright <2006, 2007, 2008, 2009, 2010> Fluendo <support@fluendo.com> 4 * Copyright <2006, 2007, 2008> Pioneers of the Inevitable <songbird@songbirdnest.com> 5 * Copyright <2007,2008> Sebastien Moutte <sebastien@moutte.net> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 * DEALINGS IN THE SOFTWARE. 24 * 25 * Alternatively, the contents of this file may be used under the 26 * GNU Lesser General Public License Version 2.1 (the "LGPL"), in 27 * which case the following provisions apply instead of the ones 28 * mentioned above: 29 * 30 * This library is free software; you can redistribute it and/or 31 * modify it under the terms of the GNU Library General Public 32 * License as published by the Free Software Foundation; either 33 * version 2 of the License, or (at your option) any later version. 34 * 35 * This library is distributed in the hope that it will be useful, 36 * but WITHOUT ANY WARRANTY; without even the implied warranty of 37 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 38 * Library General Public License for more details. 39 * 40 * You should have received a copy of the GNU Library General Public 41 * License along with this library; if not, write to the 42 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 43 * Boston, MA 02110-1301, USA. 44 */ 45 46 47 #ifndef __GST_DSHOWAUDIODEC_H__ 48 #define __GST_DSHOWAUDIODEC_H__ 49 50 #include <gst/gst.h> 51 #include "gstdshowutil.h" 52 #include "gstdshowfakesrc.h" 53 54 G_BEGIN_DECLS 55 56 typedef struct { 57 gchar *element_name; /* The gst element factory name */ 58 gchar *element_longname; /* Description string for element */ 59 gint32 format; /* WAVEFORMATEX format */ 60 gchar *sinkcaps; /* GStreamer caps of input format */ 61 PreferredFilter *preferred_filters; /* NULL-terminated list of preferred filters */ 62 } AudioCodecEntry; 63 64 #define GST_TYPE_DSHOWAUDIODEC (gst_dshowaudiodec_get_type()) 65 #define GST_DSHOWAUDIODEC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DSHOWAUDIODEC,GstDshowAudioDec)) 66 #define GST_DSHOWAUDIODEC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DSHOWAUDIODEC,GstDshowAudioDecClass)) 67 #define GST_IS_DSHOWAUDIODEC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DSHOWAUDIODEC)) 68 #define GST_IS_DSHOWAUDIODEC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DSHOWAUDIODEC)) 69 70 typedef struct _GstDshowAudioDec GstDshowAudioDec; 71 typedef struct _GstDshowAudioDecClass GstDshowAudioDecClass; 72 73 class AudioFakeSink; 74 75 struct _GstDshowAudioDec 76 { 77 GstElement element; 78 79 /* element pads */ 80 GstPad *sinkpad; 81 GstPad *srcpad; 82 83 GstFlowReturn last_ret; 84 85 /* filters interfaces*/ 86 FakeSrc *fakesrc; 87 AudioFakeSink *fakesink; 88 89 IBaseFilterPtr decfilter; 90 91 /* graph manager interfaces */ 92 IMediaFilterPtr mediafilter; 93 IFilterGraphPtr filtergraph; 94 95 /* true when dshow graph is setup */ 96 gboolean setup; 97 98 /* audio settings */ 99 gint bitrate; 100 gint block_align; 101 gint depth; 102 gint channels; 103 gint rate; 104 gint layer; 105 GstBuffer *codec_data; 106 107 /* current segment */ 108 GstSegment * segment; 109 110 /* timestamp of the next buffer */ 111 GstClockTime timestamp; 112 113 gboolean comInitialized; 114 GMutex com_init_lock; 115 GMutex com_deinit_lock; 116 GCond com_initialized; 117 GCond com_uninitialize; 118 GCond com_uninitialized; 119 }; 120 121 struct _GstDshowAudioDecClass 122 { 123 GstElementClass parent_class; 124 const AudioCodecEntry *entry; 125 }; 126 127 gboolean dshow_adec_register (GstPlugin * plugin); 128 129 const GUID CLSID_AudioFakeSink = 130 { 0x3867f537, 0x3e3d, 0x44da, 131 { 0xbb, 0xf2, 0x02, 0x48, 0x7b, 0xb0, 0xbc, 0xc4} }; 132 133 class AudioFakeSink : public CBaseRenderer 134 { 135 public: AudioFakeSink(GstDshowAudioDec * dec)136 AudioFakeSink(GstDshowAudioDec *dec) : 137 m_hres(S_OK), 138 CBaseRenderer(CLSID_AudioFakeSink, _T("AudioFakeSink"), NULL, &m_hres), 139 mDec(dec) 140 {}; ~AudioFakeSink()141 virtual ~AudioFakeSink() {}; 142 143 HRESULT DoRenderSample(IMediaSample *pMediaSample); 144 HRESULT CheckMediaType(const CMediaType *pmt); SetMediaType(AM_MEDIA_TYPE * pmt)145 HRESULT SetMediaType (AM_MEDIA_TYPE *pmt) 146 { 147 m_MediaType.Set (*pmt); 148 return S_OK; 149 } 150 int GetBufferSize(); 151 152 protected: 153 HRESULT m_hres; 154 CMediaType m_MediaType; 155 GstDshowAudioDec *mDec; 156 }; 157 158 G_END_DECLS 159 160 #endif /* __GST_DSHOWAUDIODEC_H__ */ 161