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/*
* Copyright (C) 2014, Sebastian Dröge <sebastian@centricular.com>
* Copyright (C) 2014, LG Electronics, Inc. <jun.ji@lge.com>
*
* 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 <gst/gst.h>
#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 <sebastian@centricular.com>");
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;
}
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