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/* GStreamer
* Copyright (c) 2013-2014, NVIDIA CORPORATION. All rights reserved.
*
* 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 Street, Suite 500,
* Boston, MA 02110-1335, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/audio/gstaudiodecoder.h>
#include "gstomxmpegaudiodec.h"
GST_DEBUG_CATEGORY_STATIC (gst_omx_mpegaudio_dec_debug_category);
#define GST_CAT_DEFAULT gst_omx_mpegaudio_dec_debug_category
/* prototypes */
static gboolean gst_omx_mpegaudio_dec_set_format (GstOMXAudioDec * decoder,
GstOMXPort * port, GstCaps * caps);
/* class initialization */
G_DEFINE_TYPE_WITH_CODE (GstOMXMPEGAUDIODec, gst_omx_mpegaudio_dec,
GST_TYPE_OMX_AUDIO_DEC,
GST_DEBUG_CATEGORY_INIT (gst_omx_mpegaudio_dec_debug_category,
"omxmpegaudiodec", 0, "debug category for omxmpegaudiodec element"));
static void
gst_omx_mpegaudio_dec_class_init (GstOMXMPEGAUDIODecClass * klass)
{
GstOMXAudioDecClass *omxdec_class = GST_OMX_AUDIO_DEC_CLASS (klass);
omxdec_class->set_format =
GST_DEBUG_FUNCPTR (gst_omx_mpegaudio_dec_set_format);
omxdec_class->cdata.default_sink_template_caps = "audio/mpeg, "
"mpegversion = (int) 1, " "layer = (int) [1, 3]";
gst_element_class_set_static_metadata (GST_ELEMENT_CLASS (klass),
"OpenMax MP3/MP2 decoder", "Codec/Decoder/Audio",
"Decodes MP3 and MP2 audio streams",
"Jitendra Kumar <jitendrak@nvidia.com>");
gst_omx_set_default_role (&omxdec_class->cdata, "audio_decoder.mp3");
}
static void
gst_omx_mpegaudio_dec_init (GstOMXMPEGAUDIODec * omxmpegaudiodec)
{
}
static gboolean
gst_omx_mpegaudio_dec_set_format (GstOMXAudioDec * decoder, GstOMXPort * port,
GstCaps * caps)
{
GstOMXMPEGAUDIODec *self = GST_OMX_MPEGAUDIO_DEC (decoder);
OMX_AUDIO_PARAM_MP3TYPE mp3_type;
OMX_PARAM_PORTDEFINITIONTYPE port_def;
OMX_ERRORTYPE err;
gst_omx_port_get_port_definition (port, &port_def);
port_def.format.audio.eEncoding = OMX_AUDIO_CodingMP3;
err = gst_omx_port_update_port_definition (port, &port_def);
if (err != OMX_ErrorNone) {
GST_ERROR_OBJECT (self,
"Failed to update port definition of component: %s (0x%08x)",
gst_omx_error_to_string (err), err);
return FALSE;
}
GST_OMX_INIT_STRUCT (&mp3_type);
mp3_type.nPortIndex = port->index;
err = gst_omx_component_get_parameter (decoder->dec, OMX_IndexParamAudioMp3,
&mp3_type);
if (err != OMX_ErrorNone) {
GST_ERROR_OBJECT (self,
"Failed to get MP3/MP2 parameters from component: %s (0x%08x)",
gst_omx_error_to_string (err), err);
return FALSE;
}
if (caps) {
GstStructure *s;
gint mpegaudioversion = 0, channels = 0, sample_rate = 0, layer = 0;
if (gst_caps_is_empty (caps)) {
GST_ERROR_OBJECT (self, "Empty caps");
return FALSE;
}
s = gst_caps_get_structure (caps, 0);
if (gst_structure_get_int (s, "mpegaudioversion", &mpegaudioversion)) {
if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
if (mpegaudioversion == 1)
mp3_type.eFormat = OMX_AUDIO_MP3StreamFormatMP1Layer3;
else if (mpegaudioversion == 2)
mp3_type.eFormat = OMX_AUDIO_MP3StreamFormatMP2Layer3;
}
}
if (gst_structure_get_int (s, "channels", &channels))
mp3_type.nChannels = channels;
if (gst_structure_get_int (s, "rate", &sample_rate))
mp3_type.nSampleRate = sample_rate;
}
err = gst_omx_component_set_parameter (decoder->dec, OMX_IndexParamAudioMp3,
&mp3_type);
if (err != OMX_ErrorNone) {
GST_ERROR_OBJECT (self, "Error setting MP3/MP2 parameters: %s (0x%08x)",
gst_omx_error_to_string (err), err);
return FALSE;
}
return TRUE;
}
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