diff options
Diffstat (limited to 'omx/gstomxmpegaudiodec.c')
| -rw-r--r-- | omx/gstomxmpegaudiodec.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/omx/gstomxmpegaudiodec.c b/omx/gstomxmpegaudiodec.c new file mode 100644 index 0000000..e23e419 --- /dev/null +++ b/omx/gstomxmpegaudiodec.c @@ -0,0 +1,134 @@ +/* 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; +} |