diff options
Diffstat (limited to 'omx/gstomxaacdec.c')
| -rw-r--r-- | omx/gstomxaacdec.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/omx/gstomxaacdec.c b/omx/gstomxaacdec.c new file mode 100644 index 0000000..2bbde71 --- /dev/null +++ b/omx/gstomxaacdec.c @@ -0,0 +1,164 @@ +/* GStreamer + * Copyright (c) 2013, 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 "gstomxaacdec.h" + +GST_DEBUG_CATEGORY_STATIC (gst_omx_aac_dec_debug_category); +#define GST_CAT_DEFAULT gst_omx_aac_dec_debug_category + +/* prototypes */ + +static gboolean gst_omx_aac_dec_set_format (GstOMXAudioDec * decoder, + GstOMXPort * port, GstCaps * caps); + +/* class initialization */ + +G_DEFINE_TYPE_WITH_CODE (GstOMXAACDec, gst_omx_aac_dec, GST_TYPE_OMX_AUDIO_DEC, + GST_DEBUG_CATEGORY_INIT (gst_omx_aac_dec_debug_category, "omxaacdec", 0, + "debug category for omxaacdec element")); + +static void +gst_omx_aac_dec_class_init (GstOMXAACDecClass * klass) +{ + GstOMXAudioDecClass *omxdec_class = GST_OMX_AUDIO_DEC_CLASS (klass); + + omxdec_class->set_format = GST_DEBUG_FUNCPTR (gst_omx_aac_dec_set_format); + + omxdec_class->cdata.default_sink_template_caps = "audio/mpeg, " + "mpegversion = (int) {2,4}, " + "stream-format = (string) {raw, adts, adif}"; + + gst_element_class_set_static_metadata (GST_ELEMENT_CLASS (klass), + "OpenMax AAC decoder", "Codec/Decoder/Audio", "Decodes AAC audio streams", + "Jitendra Kumar <jitendrak@nvidia.com>"); + + gst_omx_set_default_role (&omxdec_class->cdata, "audio_decoder.eaacplus"); +} + +static void +gst_omx_aac_dec_init (GstOMXAACDec * omxaacdec) +{ +} + +static gboolean +gst_omx_aac_dec_set_format (GstOMXAudioDec * decoder, GstOMXPort * port, + GstCaps * caps) +{ + GstOMXAACDec *self = GST_OMX_AAC_DEC (decoder); + OMX_AUDIO_PARAM_AACPROFILETYPE aac_profile; + OMX_PARAM_PORTDEFINITIONTYPE port_def; + OMX_ERRORTYPE err; + + gst_omx_port_get_port_definition (port, &port_def); + port_def.format.audio.eEncoding = OMX_AUDIO_CodingAAC; + 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 (&aac_profile); + aac_profile.nPortIndex = port->index; + + err = gst_omx_component_get_parameter (decoder->dec, OMX_IndexParamAudioAac, + &aac_profile); + if (err != OMX_ErrorNone) { + GST_ERROR_OBJECT (self, + "Failed to get AAC parameters from component: %s (0x%08x)", + gst_omx_error_to_string (err), err); + return FALSE; + } + + if (caps) { + GstStructure *s; + gint mpegversion = 0; + const gchar *profile_string, *stream_format_string; + + 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, "mpegversion", &mpegversion)) { + profile_string = + gst_structure_get_string (s, + ((mpegversion == 2) ? "profile" : "base-profile")); + + if (profile_string) { + if (g_str_equal (profile_string, "main")) { + aac_profile.eAACProfile = OMX_AUDIO_AACObjectMain; + } else if (g_str_equal (profile_string, "lc")) { + aac_profile.eAACProfile = OMX_AUDIO_AACObjectLC; + } else if (g_str_equal (profile_string, "ssr")) { + aac_profile.eAACProfile = OMX_AUDIO_AACObjectSSR; + } else if (g_str_equal (profile_string, "ltp")) { + aac_profile.eAACProfile = OMX_AUDIO_AACObjectLTP; + } else { + GST_ERROR_OBJECT (self, "Unsupported profile '%s'", profile_string); + return FALSE; + } + } + } + + stream_format_string = gst_structure_get_string (s, "stream-format"); + if (stream_format_string) { + if (g_str_equal (stream_format_string, "raw")) { + aac_profile.eAACStreamFormat = OMX_AUDIO_AACStreamFormatRAW; + } else if (g_str_equal (stream_format_string, "adts")) { + if (mpegversion == 2) { + aac_profile.eAACStreamFormat = OMX_AUDIO_AACStreamFormatMP2ADTS; + } else { + aac_profile.eAACStreamFormat = OMX_AUDIO_AACStreamFormatMP4ADTS; + } + } else if (g_str_equal (stream_format_string, "loas")) { + aac_profile.eAACStreamFormat = OMX_AUDIO_AACStreamFormatMP4LOAS; + } else if (g_str_equal (stream_format_string, "latm")) { + aac_profile.eAACStreamFormat = OMX_AUDIO_AACStreamFormatMP4LATM; + } else if (g_str_equal (stream_format_string, "adif")) { + aac_profile.eAACStreamFormat = OMX_AUDIO_AACStreamFormatADIF; + } else { + GST_ERROR_OBJECT (self, "Unsupported stream-format '%s'", + stream_format_string); + return FALSE; + } + } + + } + + err = gst_omx_component_set_parameter (decoder->dec, OMX_IndexParamAudioAac, + &aac_profile); + if (err != OMX_ErrorNone) { + GST_ERROR_OBJECT (self, "Error setting AAC parameters: %s (0x%08x)", + gst_omx_error_to_string (err), err); + return FALSE; + } + + return TRUE; +} |