/* GStreamer * Copyright (C) 2008 Sebastian Dröge * * 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* Implementation of SMPTE 382M - Mapping AES3 and Broadcast Wave * Audio into the MXF Generic Container */ /* TODO: * - Handle the case were a track only references specific channels * of the essence (ChannelID property) * - Add support for more codecs * - Handle more of the metadata inside the descriptors */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include "mxfaes-bwf.h" GST_DEBUG_CATEGORY_EXTERN (mxf_debug); #define GST_CAT_DEFAULT mxf_debug /* SMPTE 382M Annex 1 */ G_DEFINE_TYPE (MXFMetadataWaveAudioEssenceDescriptor, mxf_metadata_wave_audio_essence_descriptor, MXF_TYPE_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR); static gboolean mxf_metadata_wave_audio_essence_descriptor_handle_tag (MXFMetadataBase * metadata, MXFPrimerPack * primer, guint16 tag, const guint8 * tag_data, guint tag_size) { MXFMetadataWaveAudioEssenceDescriptor *self = MXF_METADATA_WAVE_AUDIO_ESSENCE_DESCRIPTOR (metadata); gboolean ret = TRUE; gchar str[48]; switch (tag) { case 0x3d0a: if (tag_size != 2) goto error; self->block_align = GST_READ_UINT16_BE (tag_data); GST_DEBUG (" block align = %u", self->block_align); break; case 0x3d0b: if (tag_size != 1) goto error; self->sequence_offset = GST_READ_UINT8 (tag_data); GST_DEBUG (" sequence offset = %u", self->sequence_offset); break; case 0x3d09: if (tag_size != 4) goto error; self->avg_bps = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" average bps = %u", self->avg_bps); break; case 0x3d32: if (tag_size != 16) goto error; memcpy (&self->channel_assignment, tag_data, 16); GST_DEBUG (" channel assignment = %s", mxf_ul_to_string (&self->channel_assignment, str)); break; case 0x3d29: if (tag_size != 4) goto error; self->peak_envelope_version = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" peak envelope version = %u", self->peak_envelope_version); break; case 0x3d2a: if (tag_size != 4) goto error; self->peak_envelope_format = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" peak envelope format = %u", self->peak_envelope_format); break; case 0x3d2b: if (tag_size != 4) goto error; self->points_per_peak_value = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" points per peak value = %u", self->points_per_peak_value); break; case 0x3d2c: if (tag_size != 4) goto error; self->peak_envelope_block_size = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" peak envelope block size = %u", self->peak_envelope_block_size); break; case 0x3d2d: if (tag_size != 4) goto error; self->peak_channels = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" peak channels = %u", self->peak_channels); break; case 0x3d2e: if (tag_size != 4) goto error; self->peak_frames = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" peak frames = %u", self->peak_frames); break; case 0x3d2f: if (tag_size != 8) goto error; self->peak_of_peaks_position = GST_READ_UINT64_BE (tag_data); GST_DEBUG (" peak of peaks position = %" G_GINT64_FORMAT, self->peak_of_peaks_position); break; case 0x3d30: if (!mxf_timestamp_parse (&self->peak_envelope_timestamp, tag_data, tag_size)) goto error; GST_DEBUG (" peak envelope timestamp = %d/%u/%u %u:%u:%u.%u", self->peak_envelope_timestamp.year, self->peak_envelope_timestamp.month, self->peak_envelope_timestamp.day, self->peak_envelope_timestamp.hour, self->peak_envelope_timestamp.minute, self->peak_envelope_timestamp.second, (self->peak_envelope_timestamp.quarter_msecond * 1000) / 256); break; case 0x3d31: self->peak_envelope_data = g_memdup (tag_data, tag_size); self->peak_envelope_data_length = tag_size; GST_DEBUG (" peak evelope data size = %u", self->peak_envelope_data_length); break; default: ret = MXF_METADATA_BASE_CLASS (mxf_metadata_wave_audio_essence_descriptor_parent_class)-> handle_tag (metadata, primer, tag, tag_data, tag_size); break; } return ret; error: GST_ERROR ("Invalid wave audio essence descriptor local tag 0x%04x of size %u", tag, tag_size); return TRUE; } static void mxf_metadata_wave_audio_essence_descriptor_init (MXFMetadataWaveAudioEssenceDescriptor * self) { } static void mxf_metadata_wave_audio_essence_descriptor_class_init (MXFMetadataWaveAudioEssenceDescriptorClass * klass) { MXFMetadataBaseClass *metadata_base_class = (MXFMetadataBaseClass *) klass; metadata_base_class->handle_tag = mxf_metadata_wave_audio_essence_descriptor_handle_tag; } /* SMPTE 382M Annex 2 */ G_DEFINE_TYPE (MXFMetadataAES3AudioEssenceDescriptor, mxf_metadata_aes3_audio_essence_descriptor, MXF_TYPE_METADATA_WAVE_AUDIO_ESSENCE_DESCRIPTOR); static void mxf_metadata_aes3_audio_essence_descriptor_finalize (GstMiniObject * object) { MXFMetadataAES3AudioEssenceDescriptor *self = MXF_METADATA_AES3_AUDIO_ESSENCE_DESCRIPTOR (object); g_free (self->channel_status_mode); self->channel_status_mode = NULL; g_free (self->fixed_channel_status_data); self->fixed_channel_status_data = NULL; g_free (self->user_data_mode); self->user_data_mode = NULL; g_free (self->fixed_user_data); self->fixed_user_data = NULL; GST_MINI_OBJECT_CLASS (mxf_metadata_aes3_audio_essence_descriptor_parent_class)-> finalize (object); } static gboolean mxf_metadata_aes3_audio_essence_descriptor_handle_tag (MXFMetadataBase * metadata, MXFPrimerPack * primer, guint16 tag, const guint8 * tag_data, guint tag_size) { MXFMetadataAES3AudioEssenceDescriptor *self = MXF_METADATA_AES3_AUDIO_ESSENCE_DESCRIPTOR (metadata); gboolean ret = TRUE; switch (tag) { case 0x3d0d: if (tag_size != 1) goto error; self->emphasis = GST_READ_UINT8 (tag_data); GST_DEBUG (" emphasis = %u", self->emphasis); ret = TRUE; break; case 0x3d0f: if (tag_size != 2) goto error; self->block_start_offset = GST_READ_UINT16_BE (tag_data); GST_DEBUG (" block start offset = %u", self->block_start_offset); ret = TRUE; break; case 0x3d08: if (tag_size != 1) goto error; self->auxiliary_bits_mode = GST_READ_UINT8 (tag_data); GST_DEBUG (" auxiliary bits mode = %u", self->auxiliary_bits_mode); ret = TRUE; break; case 0x3d10:{ guint32 len; guint i; if (tag_size < 8) goto error; len = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" number of channel status mode = %u", len); self->n_channel_status_mode = len; if (len == 0) return TRUE; if (GST_READ_UINT32_BE (tag_data + 4) != 1) goto error; tag_data += 8; tag_size -= 8; if (tag_size != len) goto error; self->channel_status_mode = g_new0 (guint8, len); for (i = 0; i < len; i++) { self->channel_status_mode[i] = GST_READ_UINT8 (tag_data); GST_DEBUG (" channel status mode %u = %u", i, self->channel_status_mode[i]); tag_data++; tag_size--; } ret = TRUE; break; } case 0x3d11:{ guint32 len; guint i; if (tag_size < 8) goto error; len = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" number of fixed channel status data = %u", len); self->n_fixed_channel_status_data = len; if (len == 0) return TRUE; if (GST_READ_UINT32_BE (tag_data + 4) != 24) goto error; tag_data += 8; tag_size -= 8; if (tag_size != len * 24) goto error; self->fixed_channel_status_data = g_malloc0 (len * sizeof (guint8 *) + len * 24); for (i = 0; i < len; i++) { self->fixed_channel_status_data[i] = ((guint8 *) self->fixed_channel_status_data) + len * sizeof (guint8 *) + i * 24; memcpy (self->fixed_channel_status_data[i], tag_data, 24); GST_DEBUG (" fixed channel status data %u = 0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x", i, self->fixed_channel_status_data[i][0], self->fixed_channel_status_data[i][1], self->fixed_channel_status_data[i][2], self->fixed_channel_status_data[i][3], self->fixed_channel_status_data[i][4], self->fixed_channel_status_data[i][5], self->fixed_channel_status_data[i][6], self->fixed_channel_status_data[i][7], self->fixed_channel_status_data[i][8], self->fixed_channel_status_data[i][9], self->fixed_channel_status_data[i][10], self->fixed_channel_status_data[i][11], self->fixed_channel_status_data[i][12], self->fixed_channel_status_data[i][13], self->fixed_channel_status_data[i][14], self->fixed_channel_status_data[i][15], self->fixed_channel_status_data[i][16], self->fixed_channel_status_data[i][17], self->fixed_channel_status_data[i][18], self->fixed_channel_status_data[i][19], self->fixed_channel_status_data[i][20], self->fixed_channel_status_data[i][21], self->fixed_channel_status_data[i][22], self->fixed_channel_status_data[i][23] ); tag_data += 24; tag_size -= 24; } ret = TRUE; break; } case 0x3d12:{ guint32 len; guint i; if (tag_size < 8) goto error; len = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" number of user data mode = %u", len); self->n_user_data_mode = len; if (len == 0) return TRUE; if (GST_READ_UINT32_BE (tag_data + 4) != 1) goto error; tag_data += 8; tag_size -= 8; if (tag_size != len) goto error; self->user_data_mode = g_new0 (guint8, len); for (i = 0; i < len; i++) { self->user_data_mode[i] = GST_READ_UINT8 (tag_data); GST_DEBUG (" user data mode %u = %u", i, self->user_data_mode[i]); tag_data++; tag_size--; } ret = TRUE; break; } case 0x3d13:{ guint32 len; guint i; if (tag_size < 8) goto error; len = GST_READ_UINT32_BE (tag_data); GST_DEBUG (" number of fixed user data = %u", len); self->n_fixed_user_data = len; if (len == 0) return TRUE; if (GST_READ_UINT32_BE (tag_data + 4) != 24) goto error; tag_data += 8; tag_size -= 8; if (tag_size != len * 24) goto error; self->fixed_user_data = g_malloc0 (len * sizeof (guint8 *) + len * 24); for (i = 0; i < len; i++) { self->fixed_user_data[i] = ((guint8 *) self->fixed_user_data) + len * sizeof (guint8 *) + i * 24; memcpy (self->fixed_user_data[i], tag_data, 24); GST_DEBUG (" fixed user data %u = 0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x.0x%02x", i, self->fixed_user_data[i][0], self->fixed_user_data[i][1], self->fixed_user_data[i][2], self->fixed_user_data[i][3], self->fixed_user_data[i][4], self->fixed_user_data[i][5], self->fixed_user_data[i][6], self->fixed_user_data[i][7], self->fixed_user_data[i][8], self->fixed_user_data[i][9], self->fixed_user_data[i][10], self->fixed_user_data[i][11], self->fixed_user_data[i][12], self->fixed_user_data[i][13], self->fixed_user_data[i][14], self->fixed_user_data[i][15], self->fixed_user_data[i][16], self->fixed_user_data[i][17], self->fixed_user_data[i][18], self->fixed_user_data[i][19], self->fixed_user_data[i][20], self->fixed_user_data[i][21], self->fixed_user_data[i][22], self->fixed_user_data[i][23] ); tag_data += 24; tag_size -= 24; } ret = TRUE; break; } /* TODO: linked timecode track / data_stream_number parsing, see * SMPTE 382M Annex 2 */ default: ret = MXF_METADATA_BASE_CLASS (mxf_metadata_aes3_audio_essence_descriptor_parent_class)-> handle_tag (metadata, primer, tag, tag_data, tag_size); break; } return ret; error: GST_ERROR ("Invalid AES3 audio essence descriptor local tag 0x%04x of size %u", tag, tag_size); return TRUE; } static void mxf_metadata_aes3_audio_essence_descriptor_init (MXFMetadataAES3AudioEssenceDescriptor * self) { } static void mxf_metadata_aes3_audio_essence_descriptor_class_init (MXFMetadataAES3AudioEssenceDescriptorClass * klass) { MXFMetadataBaseClass *metadata_base_class = (MXFMetadataBaseClass *) klass; GstMiniObjectClass *miniobject_class = (GstMiniObjectClass *) klass; miniobject_class->finalize = mxf_metadata_aes3_audio_essence_descriptor_finalize; metadata_base_class->handle_tag = mxf_metadata_aes3_audio_essence_descriptor_handle_tag; } gboolean mxf_is_aes_bwf_essence_track (const MXFMetadataTrack * track) { guint i; g_return_val_if_fail (track != NULL, FALSE); if (track->descriptor == NULL) { GST_ERROR ("No descriptor for this track"); return FALSE; } for (i = 0; i < track->n_descriptor; i++) { MXFMetadataFileDescriptor *d = track->descriptor[i]; MXFUL *key; if (!d) continue; key = &d->essence_container; /* SMPTE 382M 9 */ if (mxf_is_generic_container_essence_container_label (key) && key->u[12] == 0x02 && key->u[13] == 0x06 && (key->u[14] == 0x01 || key->u[14] == 0x02 || key->u[14] == 0x03 || key->u[14] == 0x04 || key->u[14] == 0x08 || key->u[14] == 0x09)) return TRUE; } return FALSE; } static GstFlowReturn mxf_bwf_handle_essence_element (const MXFUL * key, GstBuffer * buffer, GstCaps * caps, MXFMetadataGenericPackage * package, MXFMetadataTrack * track, MXFMetadataStructuralComponent * component, gpointer mapping_data, GstBuffer ** outbuf) { *outbuf = buffer; /* SMPTE 382M Table 1: Check if this is some kind of Wave element */ if (key->u[12] != 0x16 || (key->u[14] != 0x01 && key->u[14] != 0x02 && key->u[14] != 0x0b)) { GST_ERROR ("Invalid BWF essence element"); return GST_FLOW_ERROR; } /* FIXME: check if the size is a multiply of the unit size, ... */ return GST_FLOW_OK; } static GstFlowReturn mxf_aes3_handle_essence_element (const MXFUL * key, GstBuffer * buffer, GstCaps * caps, MXFMetadataGenericPackage * package, MXFMetadataTrack * track, MXFMetadataStructuralComponent * component, gpointer mapping_data, GstBuffer ** outbuf) { *outbuf = buffer; /* SMPTE 382M Table 1: Check if this is some kind of Wave element */ if (key->u[12] != 0x16 || (key->u[14] != 0x03 && key->u[14] != 0x04 && key->u[14] != 0x0c)) { GST_ERROR ("Invalid AES3 essence element"); return GST_FLOW_ERROR; } /* FIXME: check if the size is a multiply of the unit size, ... */ return GST_FLOW_OK; } /* SMPTE RP224 */ static const MXFUL mxf_sound_essence_compression_uncompressed = { {0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x01, 0x04, 0x02, 0x02, 0x01, 0x7F, 0x00, 0x00, 0x00} }; static const MXFUL mxf_sound_essence_compression_aiff = { {0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x07, 0x04, 0x02, 0x02, 0x01, 0x7E, 0x00, 0x00, 0x00} }; static const MXFUL mxf_sound_essence_compression_alaw = { {0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x03, 0x04, 0x02, 0x02, 0x02, 0x03, 0x01, 0x01, 0x00} }; static GstCaps * mxf_bwf_create_caps (MXFMetadataGenericPackage * package, MXFMetadataTrack * track, MXFMetadataGenericSoundEssenceDescriptor * descriptor, GstTagList ** tags, MXFEssenceElementHandler * handler, gpointer * mapping_data) { GstCaps *ret = NULL; MXFMetadataWaveAudioEssenceDescriptor *wa_descriptor = NULL; gchar str[48]; gchar *codec_name = NULL; if (MXF_IS_METADATA_WAVE_AUDIO_ESSENCE_DESCRIPTOR (descriptor)) wa_descriptor = (MXFMetadataWaveAudioEssenceDescriptor *) descriptor; /* TODO: Handle width=!depth, needs shifting of samples */ /* FIXME: set a channel layout */ if (mxf_ul_is_zero (&descriptor->sound_essence_compression) || mxf_ul_is_equal (&descriptor->sound_essence_compression, &mxf_sound_essence_compression_uncompressed)) { guint block_align; if (descriptor->channel_count == 0 || descriptor->quantization_bits == 0 || descriptor->audio_sampling_rate.n == 0 || descriptor->audio_sampling_rate.d == 0) { GST_ERROR ("Invalid descriptor"); return NULL; } if (wa_descriptor && wa_descriptor->block_align != 0) block_align = wa_descriptor->block_align; else block_align = (GST_ROUND_UP_8 (descriptor->quantization_bits) * descriptor->channel_count) / 8; ret = gst_caps_new_simple ("audio/x-raw-int", "rate", G_TYPE_INT, (gint) (((gdouble) descriptor->audio_sampling_rate.n) / ((gdouble) descriptor->audio_sampling_rate.d) + 0.5), "channels", G_TYPE_INT, descriptor->channel_count, "signed", G_TYPE_BOOLEAN, (block_align != 1), "endianness", G_TYPE_INT, G_LITTLE_ENDIAN, "depth", G_TYPE_INT, (block_align / descriptor->channel_count) * 8, "width", G_TYPE_INT, (block_align / descriptor->channel_count) * 8, NULL); codec_name = g_strdup_printf ("Uncompressed %u-bit little endian integer PCM audio", (block_align / descriptor->channel_count) * 8); } else if (mxf_ul_is_equal (&descriptor->sound_essence_compression, &mxf_sound_essence_compression_aiff)) { guint block_align; if (descriptor->channel_count == 0 || descriptor->quantization_bits == 0 || descriptor->audio_sampling_rate.n == 0 || descriptor->audio_sampling_rate.d == 0) { GST_ERROR ("Invalid descriptor"); return NULL; } if (wa_descriptor && wa_descriptor->block_align != 0) block_align = wa_descriptor->block_align; else block_align = (GST_ROUND_UP_8 (descriptor->quantization_bits) * descriptor->channel_count) / 8; ret = gst_caps_new_simple ("audio/x-raw-int", "rate", G_TYPE_INT, (gint) (((gdouble) descriptor->audio_sampling_rate.n) / ((gdouble) descriptor->audio_sampling_rate.d) + 0.5), "channels", G_TYPE_INT, descriptor->channel_count, "signed", G_TYPE_BOOLEAN, (block_align != 1), "endianness", G_TYPE_INT, G_BIG_ENDIAN, "depth", G_TYPE_INT, (block_align / descriptor->channel_count) * 8, "width", G_TYPE_INT, (block_align / descriptor->channel_count) * 8, NULL); codec_name = g_strdup_printf ("Uncompressed %u-bit big endian integer PCM audio", (block_align / descriptor->channel_count) * 8); } else if (mxf_ul_is_equal (&descriptor->sound_essence_compression, &mxf_sound_essence_compression_alaw)) { if (descriptor->audio_sampling_rate.n != 0 || descriptor->audio_sampling_rate.d != 0 || descriptor->channel_count != 0) { GST_ERROR ("Invalid descriptor"); return NULL; } ret = gst_caps_new_simple ("audio/x-alaw", "rate", G_TYPE_INT, (gint) (((gdouble) descriptor->audio_sampling_rate.n) / ((gdouble) descriptor->audio_sampling_rate.d) + 0.5), "channels", G_TYPE_INT, descriptor->channel_count); codec_name = g_strdup ("A-law encoded audio"); } else { GST_ERROR ("Unsupported sound essence compression: %s", mxf_ul_to_string (&descriptor->sound_essence_compression, str)); } if (!*tags) *tags = gst_tag_list_new (); if (codec_name) { gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_AUDIO_CODEC, codec_name, NULL); g_free (codec_name); } if (wa_descriptor && wa_descriptor->avg_bps) gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_BITRATE, wa_descriptor->avg_bps * 8, NULL); *handler = mxf_bwf_handle_essence_element; return ret; } static GstCaps * mxf_aes3_create_caps (MXFMetadataGenericPackage * package, MXFMetadataTrack * track, MXFMetadataGenericSoundEssenceDescriptor * descriptor, GstTagList ** tags, MXFEssenceElementHandler * handler, gpointer * mapping_data) { GstCaps *ret = NULL; MXFMetadataWaveAudioEssenceDescriptor *wa_descriptor = NULL; gchar *codec_name = NULL; guint block_align; if (MXF_IS_METADATA_WAVE_AUDIO_ESSENCE_DESCRIPTOR (descriptor)) wa_descriptor = (MXFMetadataWaveAudioEssenceDescriptor *) descriptor; /* FIXME: set a channel layout */ if (descriptor->channel_count == 0 || descriptor->quantization_bits == 0 || descriptor->audio_sampling_rate.n == 0 || descriptor->audio_sampling_rate.d == 0) { GST_ERROR ("Invalid descriptor"); return NULL; } if (wa_descriptor && wa_descriptor->block_align != 0) block_align = wa_descriptor->block_align; else block_align = (GST_ROUND_UP_8 (descriptor->quantization_bits) * descriptor->channel_count) / 8; ret = gst_caps_new_simple ("audio/x-raw-int", "rate", G_TYPE_INT, (gint) (((gdouble) descriptor->audio_sampling_rate.n) / ((gdouble) descriptor->audio_sampling_rate.d) + 0.5), "channels", G_TYPE_INT, descriptor->channel_count, "signed", G_TYPE_BOOLEAN, (block_align != 1), "endianness", G_TYPE_INT, G_LITTLE_ENDIAN, "depth", G_TYPE_INT, (block_align / descriptor->channel_count) * 8, "width", G_TYPE_INT, (block_align / descriptor->channel_count) * 8, NULL); codec_name = g_strdup_printf ("Uncompressed %u-bit AES3 audio", (block_align / descriptor->channel_count) * 8); if (!*tags) *tags = gst_tag_list_new (); gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_AUDIO_CODEC, codec_name, GST_TAG_BITRATE, block_align * 8, NULL); g_free (codec_name); *handler = mxf_aes3_handle_essence_element; return ret; } GstCaps * mxf_aes_bwf_create_caps (MXFMetadataGenericPackage * package, MXFMetadataTrack * track, GstTagList ** tags, MXFEssenceElementHandler * handler, gpointer * mapping_data) { MXFMetadataGenericSoundEssenceDescriptor *s = NULL; gboolean bwf = FALSE; guint i; g_return_val_if_fail (package != NULL, NULL); g_return_val_if_fail (track != NULL, NULL); if (track->descriptor == NULL) { GST_ERROR ("No descriptor found for this track"); return NULL; } for (i = 0; i < track->n_descriptor; i++) { if (!track->descriptor[i]) continue; if (MXF_IS_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR (track->descriptor[i]) && (track->descriptor[i]->essence_container.u[14] == 0x01 || track->descriptor[i]->essence_container.u[14] == 0x02 || track->descriptor[i]->essence_container.u[14] == 0x08)) { s = (MXFMetadataGenericSoundEssenceDescriptor *) track->descriptor[i]; bwf = TRUE; break; } else if (MXF_IS_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR (track-> descriptor[i]) && (track->descriptor[i]->essence_container.u[14] == 0x03 || track->descriptor[i]->essence_container.u[14] == 0x04 || track->descriptor[i]->essence_container.u[14] == 0x09)) { s = (MXFMetadataGenericSoundEssenceDescriptor *) track->descriptor[i]; bwf = FALSE; break; } } if (!s) { GST_ERROR ("No descriptor found for this track"); return NULL; } else if (bwf) { return mxf_bwf_create_caps (package, track, s, tags, handler, mapping_data); } else { return mxf_aes3_create_caps (package, track, s, tags, handler, mapping_data); } return NULL; } void mxf_aes_bwf_init (void) { mxf_metadata_register (0x0148, MXF_TYPE_METADATA_WAVE_AUDIO_ESSENCE_DESCRIPTOR); mxf_metadata_register (0x0147, MXF_TYPE_METADATA_AES3_AUDIO_ESSENCE_DESCRIPTOR); }