diff options
author | Sebastian Dröge <sebastian@centricular.com> | 2014-07-13 22:15:18 +0200 |
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committer | Sebastian Dröge <sebastian@centricular.com> | 2014-07-13 22:15:44 +0200 |
commit | 08385fe94425cb935f22dfa8cb399ac5589cbab0 (patch) | |
tree | 9158a65332bab8c765af8400b796ce3d8a786433 /omx/gstomxaacdec.c | |
parent | 03cf0bc9a40c44e35add8c8a139cc0e954d29a6e (diff) | |
download | gst-omx-08385fe94425cb935f22dfa8cb399ac5589cbab0.tar.gz |
omxaudiodec: Implement setting of fallback channel positions
Diffstat (limited to 'omx/gstomxaacdec.c')
-rw-r--r-- | omx/gstomxaacdec.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/omx/gstomxaacdec.c b/omx/gstomxaacdec.c index 2422275..7d81269 100644 --- a/omx/gstomxaacdec.c +++ b/omx/gstomxaacdec.c @@ -35,6 +35,8 @@ static gboolean gst_omx_aac_dec_is_format_change (GstOMXAudioDec * dec, GstOMXPort * port, GstCaps * caps); static gint gst_omx_aac_dec_get_samples_per_frame (GstOMXAudioDec * dec, GstOMXPort * port); +static gboolean gst_omx_aac_dec_get_channel_positions (GstOMXAudioDec * dec, + GstOMXPort * port, GstAudioChannelPosition position[OMX_AUDIO_MAXCHANNELS]); /* class initialization */ @@ -56,6 +58,8 @@ gst_omx_aac_dec_class_init (GstOMXAACDecClass * klass) GST_DEBUG_FUNCPTR (gst_omx_aac_dec_is_format_change); audiodec_class->get_samples_per_frame = GST_DEBUG_FUNCPTR (gst_omx_aac_dec_get_samples_per_frame); + audiodec_class->get_channel_positions = + GST_DEBUG_FUNCPTR (gst_omx_aac_dec_get_channel_positions); audiodec_class->cdata.default_sink_template_caps = "audio/mpeg, " "mpegversion=(int){2, 4}, " @@ -228,3 +232,63 @@ gst_omx_aac_dec_get_samples_per_frame (GstOMXAudioDec * dec, GstOMXPort * port) { return GST_OMX_AAC_DEC (dec)->spf; } + +static gboolean +gst_omx_aac_dec_get_channel_positions (GstOMXAudioDec * dec, + GstOMXPort * port, GstAudioChannelPosition position[OMX_AUDIO_MAXCHANNELS]) +{ + OMX_AUDIO_PARAM_PCMMODETYPE pcm_param; + OMX_ERRORTYPE err; + + GST_OMX_INIT_STRUCT (&pcm_param); + pcm_param.nPortIndex = port->index; + err = + gst_omx_component_get_parameter (dec->dec, OMX_IndexParamAudioPcm, + &pcm_param); + if (err != OMX_ErrorNone) { + GST_ERROR_OBJECT (dec, "Failed to get PCM parameters: %s (0x%08x)", + gst_omx_error_to_string (err), err); + return FALSE; + } + + /* FIXME: Rather arbitrary values here, based on what we do in gstfaac.c */ + switch (pcm_param.nChannels) { + case 1: + position[0] = GST_AUDIO_CHANNEL_POSITION_MONO; + break; + case 2: + position[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT; + position[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT; + break; + case 3: + position[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER; + position[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT; + position[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT; + break; + case 4: + position[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER; + position[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT; + position[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT; + position[3] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER; + break; + case 5: + position[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER; + position[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT; + position[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT; + position[3] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT; + position[4] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT; + break; + case 6: + position[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER; + position[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT; + position[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT; + position[3] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT; + position[4] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT; + position[5] = GST_AUDIO_CHANNEL_POSITION_LFE1; + break; + default: + return FALSE; + } + + return TRUE; +} |