/* * Copyright (C) 2014, Sebastian Dröge * Copyright (C) 2014, LG Electronics, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation * version 2.1 of the License. * * 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "gstomxamrdec.h" GST_DEBUG_CATEGORY_STATIC (gst_omx_amr_dec_debug_category); #define GST_CAT_DEFAULT gst_omx_amr_dec_debug_category /* prototypes */ static gboolean gst_omx_amr_dec_set_format (GstOMXAudioDec * dec, GstOMXPort * port, GstCaps * caps); static gboolean gst_omx_amr_dec_is_format_change (GstOMXAudioDec * dec, GstOMXPort * port, GstCaps * caps); static gint gst_omx_amr_dec_get_samples_per_frame (GstOMXAudioDec * dec, GstOMXPort * port); static gboolean gst_omx_amr_dec_get_channel_positions (GstOMXAudioDec * dec, GstOMXPort * port, GstAudioChannelPosition position[OMX_AUDIO_MAXCHANNELS]); /* class initialization */ #define DEBUG_INIT \ GST_DEBUG_CATEGORY_INIT (gst_omx_amr_dec_debug_category, "omxamrdec", 0, \ "debug category for gst-omx amr audio decoder"); G_DEFINE_TYPE_WITH_CODE (GstOMXAMRDec, gst_omx_amr_dec, GST_TYPE_OMX_AUDIO_DEC, DEBUG_INIT); static void gst_omx_amr_dec_class_init (GstOMXAMRDecClass * klass) { GstElementClass *element_class = GST_ELEMENT_CLASS (klass); GstOMXAudioDecClass *audiodec_class = GST_OMX_AUDIO_DEC_CLASS (klass); audiodec_class->set_format = GST_DEBUG_FUNCPTR (gst_omx_amr_dec_set_format); audiodec_class->is_format_change = GST_DEBUG_FUNCPTR (gst_omx_amr_dec_is_format_change); audiodec_class->get_samples_per_frame = GST_DEBUG_FUNCPTR (gst_omx_amr_dec_get_samples_per_frame); audiodec_class->get_channel_positions = GST_DEBUG_FUNCPTR (gst_omx_amr_dec_get_channel_positions); audiodec_class->cdata.default_sink_template_caps = "audio/AMR, rate=(int)8000, channels=(int)1; " "audio/AMR-WB, rate=(int)16000, channels=(int)1"; gst_element_class_set_static_metadata (element_class, "OpenMAX AMR Audio Decoder", "Codec/Decoder/Audio/Hardware", "Decode AMR audio streams", "Sebastian Dröge "); gst_omx_set_default_role (&audiodec_class->cdata, "audio_decoder.amrnb"); } static void gst_omx_amr_dec_init (GstOMXAMRDec * self) { self->spf = -1; } static gboolean gst_omx_amr_dec_set_format (GstOMXAudioDec * dec, GstOMXPort * port, GstCaps * caps) { GstOMXAMRDec *self = GST_OMX_AMR_DEC (dec); OMX_PARAM_PORTDEFINITIONTYPE port_def; OMX_AUDIO_PARAM_AMRTYPE amr_param; OMX_ERRORTYPE err; GstStructure *s; gint rate, channels; gst_omx_port_get_port_definition (port, &port_def); port_def.format.audio.eEncoding = OMX_AUDIO_CodingAMR; /* not tested for AMRWB */ err = gst_omx_port_update_port_definition (port, &port_def); if (err != OMX_ErrorNone) { GST_ERROR_OBJECT (self, "Failed to set AMR format on component: %s (0x%08x)", gst_omx_error_to_string (err), err); return FALSE; } GST_OMX_INIT_STRUCT (&amr_param); amr_param.nPortIndex = port->index; err = gst_omx_component_get_parameter (dec->dec, OMX_IndexParamAudioAmr, &amr_param); if (err != OMX_ErrorNone) { GST_ERROR_OBJECT (self, "Failed to get AMR parameters from component: %s (0x%08x)", gst_omx_error_to_string (err), err); return FALSE; } s = gst_caps_get_structure (caps, 0); if (!gst_structure_get_int (s, "rate", &rate) || !gst_structure_get_int (s, "channels", &channels)) { GST_ERROR_OBJECT (self, "Incomplete caps"); return FALSE; } self->rate = rate; if (rate == 8000) self->spf = 160; /* (8000/50) */ else if (rate == 16000) self->spf = 320; /* (16000/50) */ amr_param.nChannels = channels; amr_param.eAMRBandMode = 0; /*FIXME: It may require a specific value */ amr_param.eAMRDTXMode = 0; amr_param.eAMRFrameFormat = 0; err = gst_omx_component_set_parameter (dec->dec, OMX_IndexParamAudioAmr, &amr_param); if (err != OMX_ErrorNone) { GST_ERROR_OBJECT (self, "Error setting AMR parameters: %s (0x%08x)", gst_omx_error_to_string (err), err); return FALSE; } return TRUE; } static gboolean gst_omx_amr_dec_is_format_change (GstOMXAudioDec * dec, GstOMXPort * port, GstCaps * caps) { GstOMXAMRDec *self = GST_OMX_AMR_DEC (dec); OMX_AUDIO_PARAM_AMRTYPE amr_param; OMX_ERRORTYPE err; GstStructure *s; gint rate, channels; GST_OMX_INIT_STRUCT (&amr_param); amr_param.nPortIndex = port->index; err = gst_omx_component_get_parameter (dec->dec, OMX_IndexParamAudioAmr, &amr_param); if (err != OMX_ErrorNone) { GST_ERROR_OBJECT (self, "Failed to get AMR parameters from component: %s (0x%08x)", gst_omx_error_to_string (err), err); return FALSE; } s = gst_caps_get_structure (caps, 0); if (!gst_structure_get_int (s, "rate", &rate) || !gst_structure_get_int (s, "channels", &channels)) { GST_ERROR_OBJECT (self, "Incomplete caps"); return FALSE; } if (self->rate != rate) return TRUE; if (amr_param.nChannels != channels) return TRUE; return FALSE; } static gint gst_omx_amr_dec_get_samples_per_frame (GstOMXAudioDec * dec, GstOMXPort * port) { return GST_OMX_AMR_DEC (dec)->spf; } static gboolean gst_omx_amr_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; } g_return_val_if_fail (pcm_param.nChannels == 1, FALSE); /* AMR supports only mono */ position[0] = GST_AUDIO_CHANNEL_POSITION_MONO; return TRUE; }