/* Quicktime muxer plugin for GStreamer * Copyright (C) 2008-2010 Thiago Santos * Copyright (C) 2008 Mark Nauwelaerts * * 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. */ /* * Unless otherwise indicated, Source Code is licensed under MIT license. * See further explanation attached in License Statement (distributed in the file * LICENSE). * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies * of the Software, and to permit persons to whom the Software is furnished to do * so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include "atoms.h" #include #include #include #include #include /** * Creates a new AtomsContext for the given flavor. */ AtomsContext * atoms_context_new (AtomsTreeFlavor flavor) { AtomsContext *context = g_new0 (AtomsContext, 1); context->flavor = flavor; return context; } /** * Frees an AtomsContext and all memory associated with it */ void atoms_context_free (AtomsContext * context) { g_free (context); } /* -- creation, initialization, clear and free functions -- */ #define SECS_PER_DAY (24 * 60 * 60) #define LEAP_YEARS_FROM_1904_TO_1970 17 static guint64 get_current_qt_time (void) { GTimeVal timeval; g_get_current_time (&timeval); /* FIXME this should use UTC coordinated time */ return timeval.tv_sec + (((1970 - 1904) * (guint64) 365) + LEAP_YEARS_FROM_1904_TO_1970) * SECS_PER_DAY; } static void common_time_info_init (TimeInfo * ti) { ti->creation_time = ti->modification_time = get_current_qt_time (); ti->timescale = 0; ti->duration = 0; } static void atom_header_set (Atom * header, guint32 fourcc, gint32 size, gint64 ext_size) { header->type = fourcc; header->size = size; header->extended_size = ext_size; } static void atom_clear (Atom * atom) { } static void atom_full_init (AtomFull * full, guint32 fourcc, gint32 size, gint64 ext_size, guint8 version, guint8 flags[3]) { atom_header_set (&(full->header), fourcc, size, ext_size); full->version = version; full->flags[0] = flags[0]; full->flags[1] = flags[1]; full->flags[2] = flags[2]; } static void atom_full_clear (AtomFull * full) { atom_clear (&full->header); } static void atom_full_free (AtomFull * full) { atom_full_clear (full); g_free (full); } static AtomInfo * build_atom_info_wrapper (Atom * atom, gpointer copy_func, gpointer free_func) { AtomInfo *info = NULL; if (atom) { info = g_new0 (AtomInfo, 1); info->atom = atom; info->copy_data_func = copy_func; info->free_func = free_func; } return info; } static GList * atom_info_list_prepend_atom (GList * ai, Atom * atom, AtomCopyDataFunc copy_func, AtomFreeFunc free_func) { if (atom) return g_list_prepend (ai, build_atom_info_wrapper (atom, copy_func, free_func)); else return ai; } static void atom_info_list_free (GList * ai) { while (ai) { AtomInfo *info = (AtomInfo *) ai->data; info->free_func (info->atom); g_free (info); ai = g_list_delete_link (ai, ai); } } static AtomData * atom_data_new (guint32 fourcc) { AtomData *data = g_new0 (AtomData, 1); atom_header_set (&data->header, fourcc, 0, 0); return data; } static void atom_data_alloc_mem (AtomData * data, guint32 size) { if (data->data) { g_free (data->data); } data->data = g_new0 (guint8, size); data->datalen = size; } static AtomData * atom_data_new_from_gst_buffer (guint32 fourcc, const GstBuffer * buf) { AtomData *data = atom_data_new (fourcc); atom_data_alloc_mem (data, GST_BUFFER_SIZE (buf)); g_memmove (data->data, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); return data; } static void atom_data_free (AtomData * data) { atom_clear (&data->header); g_free (data->data); g_free (data); } static AtomUUID * atom_uuid_new (void) { AtomUUID *uuid = g_new0 (AtomUUID, 1); atom_header_set (&uuid->header, FOURCC_uuid, 0, 0); return uuid; } static void atom_uuid_free (AtomUUID * data) { atom_clear (&data->header); g_free (data->data); g_free (data); } static void atom_ftyp_init (AtomFTYP * ftyp, guint32 major, guint32 version, GList * brands) { gint index; GList *it = NULL; atom_header_set (&ftyp->header, FOURCC_ftyp, 16, 0); ftyp->major_brand = major; ftyp->version = version; /* always include major brand as compatible brand */ ftyp->compatible_brands_size = g_list_length (brands) + 1; ftyp->compatible_brands = g_new (guint32, ftyp->compatible_brands_size); ftyp->compatible_brands[0] = major; index = 1; for (it = brands; it != NULL; it = g_list_next (it)) { ftyp->compatible_brands[index++] = GPOINTER_TO_UINT (it->data); } } AtomFTYP * atom_ftyp_new (AtomsContext * context, guint32 major, guint32 version, GList * brands) { AtomFTYP *ftyp = g_new0 (AtomFTYP, 1); atom_ftyp_init (ftyp, major, version, brands); return ftyp; } void atom_ftyp_free (AtomFTYP * ftyp) { atom_clear (&ftyp->header); g_free (ftyp->compatible_brands); ftyp->compatible_brands = NULL; g_free (ftyp); } static void atom_esds_init (AtomESDS * esds) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&esds->header, FOURCC_esds, 0, 0, 0, flags); desc_es_init (&esds->es); } static AtomESDS * atom_esds_new (void) { AtomESDS *esds = g_new0 (AtomESDS, 1); atom_esds_init (esds); return esds; } static void atom_esds_free (AtomESDS * esds) { atom_full_clear (&esds->header); desc_es_descriptor_clear (&esds->es); g_free (esds); } static AtomFRMA * atom_frma_new (void) { AtomFRMA *frma = g_new0 (AtomFRMA, 1); atom_header_set (&frma->header, FOURCC_frma, 0, 0); return frma; } static void atom_frma_free (AtomFRMA * frma) { atom_clear (&frma->header); g_free (frma); } static AtomWAVE * atom_wave_new (void) { AtomWAVE *wave = g_new0 (AtomWAVE, 1); atom_header_set (&wave->header, FOURCC_wave, 0, 0); return wave; } static void atom_wave_free (AtomWAVE * wave) { atom_clear (&wave->header); atom_info_list_free (wave->extension_atoms); g_free (wave); } static void atom_elst_init (AtomELST * elst) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&elst->header, FOURCC_elst, 0, 0, 0, flags); elst->entries = 0; } static void atom_elst_clear (AtomELST * elst) { GSList *walker; atom_full_clear (&elst->header); walker = elst->entries; while (walker) { g_free ((EditListEntry *) walker->data); walker = g_slist_next (walker); } g_slist_free (elst->entries); } static void atom_edts_init (AtomEDTS * edts) { atom_header_set (&edts->header, FOURCC_edts, 0, 0); atom_elst_init (&edts->elst); } static void atom_edts_clear (AtomEDTS * edts) { atom_clear (&edts->header); atom_elst_clear (&edts->elst); } static AtomEDTS * atom_edts_new (void) { AtomEDTS *edts = g_new0 (AtomEDTS, 1); atom_edts_init (edts); return edts; } static void atom_edts_free (AtomEDTS * edts) { atom_edts_clear (edts); g_free (edts); } static void atom_sample_entry_init (SampleTableEntry * se, guint32 type) { atom_header_set (&se->header, type, 0, 0); memset (se->reserved, 0, sizeof (guint8) * 6); se->data_reference_index = 0; } static void atom_sample_entry_free (SampleTableEntry * se) { atom_clear (&se->header); } static void sample_entry_mp4a_init (SampleTableEntryMP4A * mp4a) { atom_sample_entry_init (&mp4a->se, FOURCC_mp4a); mp4a->version = 0; mp4a->revision_level = 0; mp4a->vendor = 0; mp4a->channels = 2; mp4a->sample_size = 16; mp4a->compression_id = 0; mp4a->packet_size = 0; mp4a->sample_rate = 0; /* following only used if version is 1 */ mp4a->samples_per_packet = 0; mp4a->bytes_per_packet = 0; mp4a->bytes_per_frame = 0; mp4a->bytes_per_sample = 0; mp4a->extension_atoms = NULL; } static SampleTableEntryMP4A * sample_entry_mp4a_new (void) { SampleTableEntryMP4A *mp4a = g_new0 (SampleTableEntryMP4A, 1); sample_entry_mp4a_init (mp4a); return mp4a; } static void sample_entry_mp4a_free (SampleTableEntryMP4A * mp4a) { atom_sample_entry_free (&mp4a->se); atom_info_list_free (mp4a->extension_atoms); g_free (mp4a); } static void sample_entry_mp4v_init (SampleTableEntryMP4V * mp4v, AtomsContext * context) { atom_sample_entry_init (&mp4v->se, FOURCC_mp4v); mp4v->version = 0; mp4v->revision_level = 0; mp4v->vendor = 0; mp4v->temporal_quality = 0; mp4v->spatial_quality = 0; /* qt and ISO base media do not contradict, and examples agree */ mp4v->horizontal_resolution = 0x00480000; mp4v->vertical_resolution = 0x00480000; mp4v->datasize = 0; mp4v->frame_count = 1; memset (mp4v->compressor, 0, sizeof (guint8) * 32); mp4v->depth = 0; mp4v->color_table_id = 0; mp4v->extension_atoms = NULL; } static void sample_entry_mp4v_free (SampleTableEntryMP4V * mp4v) { atom_sample_entry_free (&mp4v->se); atom_info_list_free (mp4v->extension_atoms); g_free (mp4v); } static SampleTableEntryMP4V * sample_entry_mp4v_new (AtomsContext * context) { SampleTableEntryMP4V *mp4v = g_new0 (SampleTableEntryMP4V, 1); sample_entry_mp4v_init (mp4v, context); return mp4v; } static void atom_stsd_init (AtomSTSD * stsd) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&stsd->header, FOURCC_stsd, 0, 0, 0, flags); stsd->entries = NULL; stsd->n_entries = 0; } static void atom_stsd_remove_entries (AtomSTSD * stsd) { GList *walker; walker = stsd->entries; while (walker) { GList *aux = walker; SampleTableEntry *se = (SampleTableEntry *) aux->data; walker = g_list_next (walker); stsd->entries = g_list_remove_link (stsd->entries, aux); switch (se->kind) { case AUDIO: sample_entry_mp4a_free ((SampleTableEntryMP4A *) se); break; case VIDEO: sample_entry_mp4v_free ((SampleTableEntryMP4V *) se); break; default: /* best possible cleanup */ atom_sample_entry_free (se); } g_list_free (aux); } stsd->n_entries = 0; } static void atom_stsd_clear (AtomSTSD * stsd) { atom_stsd_remove_entries (stsd); atom_full_clear (&stsd->header); } static void atom_ctts_init (AtomCTTS * ctts) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&ctts->header, FOURCC_ctts, 0, 0, 0, flags); atom_array_init (&ctts->entries, 128); } static AtomCTTS * atom_ctts_new (void) { AtomCTTS *ctts = g_new0 (AtomCTTS, 1); atom_ctts_init (ctts); return ctts; } static void atom_ctts_free (AtomCTTS * ctts) { atom_full_clear (&ctts->header); atom_array_clear (&ctts->entries); g_free (ctts); } static void atom_stts_init (AtomSTTS * stts) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&stts->header, FOURCC_stts, 0, 0, 0, flags); atom_array_init (&stts->entries, 512); } static void atom_stts_clear (AtomSTTS * stts) { atom_full_clear (&stts->header); atom_array_clear (&stts->entries); } static void atom_stsz_init (AtomSTSZ * stsz) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&stsz->header, FOURCC_stsz, 0, 0, 0, flags); atom_array_init (&stsz->entries, 1024); stsz->sample_size = 0; stsz->table_size = 0; } static void atom_stsz_clear (AtomSTSZ * stsz) { atom_full_clear (&stsz->header); atom_array_clear (&stsz->entries); stsz->table_size = 0; } static void atom_stsc_init (AtomSTSC * stsc) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&stsc->header, FOURCC_stsc, 0, 0, 0, flags); atom_array_init (&stsc->entries, 128); } static void atom_stsc_clear (AtomSTSC * stsc) { atom_full_clear (&stsc->header); atom_array_clear (&stsc->entries); } static void atom_co64_init (AtomSTCO64 * co64) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&co64->header, FOURCC_co64, 0, 0, 0, flags); atom_array_init (&co64->entries, 256); } static void atom_stco64_clear (AtomSTCO64 * stco64) { atom_full_clear (&stco64->header); atom_array_clear (&stco64->entries); } static void atom_stss_init (AtomSTSS * stss) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&stss->header, FOURCC_stss, 0, 0, 0, flags); atom_array_init (&stss->entries, 128); } static void atom_stss_clear (AtomSTSS * stss) { atom_full_clear (&stss->header); atom_array_clear (&stss->entries); } void atom_stbl_init (AtomSTBL * stbl) { atom_header_set (&stbl->header, FOURCC_stbl, 0, 0); atom_stts_init (&stbl->stts); atom_stss_init (&stbl->stss); atom_stsd_init (&stbl->stsd); atom_stsz_init (&stbl->stsz); atom_stsc_init (&stbl->stsc); stbl->ctts = NULL; atom_co64_init (&stbl->stco64); } void atom_stbl_clear (AtomSTBL * stbl) { atom_clear (&stbl->header); atom_stsd_clear (&stbl->stsd); atom_stts_clear (&stbl->stts); atom_stss_clear (&stbl->stss); atom_stsc_clear (&stbl->stsc); atom_stsz_clear (&stbl->stsz); if (stbl->ctts) { atom_ctts_free (stbl->ctts); } atom_stco64_clear (&stbl->stco64); } static void atom_vmhd_init (AtomVMHD * vmhd, AtomsContext * context) { guint8 flags[3] = { 0, 0, 1 }; atom_full_init (&vmhd->header, FOURCC_vmhd, 0, 0, 0, flags); vmhd->graphics_mode = 0x0; memset (vmhd->opcolor, 0, sizeof (guint16) * 3); if (context->flavor == ATOMS_TREE_FLAVOR_MOV) { vmhd->graphics_mode = 0x40; vmhd->opcolor[0] = 32768; vmhd->opcolor[1] = 32768; vmhd->opcolor[2] = 32768; } } static AtomVMHD * atom_vmhd_new (AtomsContext * context) { AtomVMHD *vmhd = g_new0 (AtomVMHD, 1); atom_vmhd_init (vmhd, context); return vmhd; } static void atom_vmhd_free (AtomVMHD * vmhd) { atom_full_clear (&vmhd->header); g_free (vmhd); } static void atom_smhd_init (AtomSMHD * smhd) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&smhd->header, FOURCC_smhd, 0, 0, 0, flags); smhd->balance = 0; smhd->reserved = 0; } static AtomSMHD * atom_smhd_new (void) { AtomSMHD *smhd = g_new0 (AtomSMHD, 1); atom_smhd_init (smhd); return smhd; } static void atom_smhd_free (AtomSMHD * smhd) { atom_full_clear (&smhd->header); g_free (smhd); } static void atom_hmhd_free (AtomHMHD * hmhd) { atom_full_clear (&hmhd->header); g_free (hmhd); } static void atom_hdlr_init (AtomHDLR * hdlr) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&hdlr->header, FOURCC_hdlr, 0, 0, 0, flags); hdlr->component_type = 0; hdlr->handler_type = 0; hdlr->manufacturer = 0; hdlr->flags = 0; hdlr->flags_mask = 0; hdlr->name = g_strdup (""); } static AtomHDLR * atom_hdlr_new (void) { AtomHDLR *hdlr = g_new0 (AtomHDLR, 1); atom_hdlr_init (hdlr); return hdlr; } static void atom_hdlr_clear (AtomHDLR * hdlr) { atom_full_clear (&hdlr->header); if (hdlr->name) { g_free (hdlr->name); hdlr->name = NULL; } } static void atom_hdlr_free (AtomHDLR * hdlr) { atom_hdlr_clear (hdlr); g_free (hdlr); } static void atom_url_init (AtomURL * url) { guint8 flags[3] = { 0, 0, 1 }; atom_full_init (&url->header, FOURCC_url_, 0, 0, 0, flags); url->location = NULL; } static void atom_url_free (AtomURL * url) { atom_full_clear (&url->header); if (url->location) { g_free (url->location); url->location = NULL; } g_free (url); } static AtomURL * atom_url_new (void) { AtomURL *url = g_new0 (AtomURL, 1); atom_url_init (url); return url; } static AtomFull * atom_alis_new (void) { guint8 flags[3] = { 0, 0, 1 }; AtomFull *alis = g_new0 (AtomFull, 1); atom_full_init (alis, FOURCC_alis, 0, 0, 0, flags); return alis; } static void atom_dref_init (AtomDREF * dref, AtomsContext * context) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&dref->header, FOURCC_dref, 0, 0, 0, flags); /* in either case, alis or url init arranges to set self-contained flag */ if (context->flavor == ATOMS_TREE_FLAVOR_MOV) { /* alis dref for qt */ AtomFull *alis = atom_alis_new (); dref->entries = g_list_append (dref->entries, alis); } else { /* url for iso spec, as 'alis' not specified there */ AtomURL *url = atom_url_new (); dref->entries = g_list_append (dref->entries, url); } } static void atom_dref_clear (AtomDREF * dref) { GList *walker; atom_full_clear (&dref->header); walker = dref->entries; while (walker) { GList *aux = walker; Atom *atom = (Atom *) aux->data; walker = g_list_next (walker); dref->entries = g_list_remove_link (dref->entries, aux); switch (atom->type) { case FOURCC_alis: atom_full_free ((AtomFull *) atom); break; case FOURCC_url_: atom_url_free ((AtomURL *) atom); break; default: /* we do nothing, better leak than crash */ break; } g_list_free (aux); } } static void atom_dinf_init (AtomDINF * dinf, AtomsContext * context) { atom_header_set (&dinf->header, FOURCC_dinf, 0, 0); atom_dref_init (&dinf->dref, context); } static void atom_dinf_clear (AtomDINF * dinf) { atom_clear (&dinf->header); atom_dref_clear (&dinf->dref); } static void atom_minf_init (AtomMINF * minf, AtomsContext * context) { atom_header_set (&minf->header, FOURCC_minf, 0, 0); minf->vmhd = NULL; minf->smhd = NULL; minf->hmhd = NULL; if (context->flavor == ATOMS_TREE_FLAVOR_MOV) { minf->hdlr = atom_hdlr_new (); minf->hdlr->component_type = FOURCC_dhlr; minf->hdlr->handler_type = FOURCC_alis; } else { minf->hdlr = NULL; } atom_dinf_init (&minf->dinf, context); atom_stbl_init (&minf->stbl); } static void atom_minf_clear_handlers (AtomMINF * minf) { if (minf->vmhd) { atom_vmhd_free (minf->vmhd); minf->vmhd = NULL; } if (minf->smhd) { atom_smhd_free (minf->smhd); minf->smhd = NULL; } if (minf->hmhd) { atom_hmhd_free (minf->hmhd); minf->hmhd = NULL; } } static void atom_minf_clear (AtomMINF * minf) { atom_clear (&minf->header); atom_minf_clear_handlers (minf); if (minf->hdlr) { atom_hdlr_free (minf->hdlr); } atom_dinf_clear (&minf->dinf); atom_stbl_clear (&minf->stbl); } static void atom_mdhd_init (AtomMDHD * mdhd) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&mdhd->header, FOURCC_mdhd, 0, 0, 0, flags); common_time_info_init (&mdhd->time_info); mdhd->language_code = 0; mdhd->quality = 0; } static void atom_mdhd_clear (AtomMDHD * mdhd) { atom_full_clear (&mdhd->header); } static void atom_mdia_init (AtomMDIA * mdia, AtomsContext * context) { atom_header_set (&mdia->header, FOURCC_mdia, 0, 0); atom_mdhd_init (&mdia->mdhd); atom_hdlr_init (&mdia->hdlr); atom_minf_init (&mdia->minf, context); } static void atom_mdia_clear (AtomMDIA * mdia) { atom_clear (&mdia->header); atom_mdhd_clear (&mdia->mdhd); atom_hdlr_clear (&mdia->hdlr); atom_minf_clear (&mdia->minf); } static void atom_tkhd_init (AtomTKHD * tkhd, AtomsContext * context) { /* * flags info * 1 -> track enabled * 2 -> track in movie * 4 -> track in preview */ guint8 flags[3] = { 0, 0, 7 }; atom_full_init (&tkhd->header, FOURCC_tkhd, 0, 0, 0, flags); tkhd->creation_time = tkhd->modification_time = get_current_qt_time (); tkhd->duration = 0; tkhd->track_ID = 0; tkhd->reserved = 0; tkhd->reserved2[0] = tkhd->reserved2[1] = 0; tkhd->layer = 0; tkhd->alternate_group = 0; tkhd->volume = 0; tkhd->reserved3 = 0; memset (tkhd->matrix, 0, sizeof (guint32) * 9); tkhd->matrix[0] = 1 << 16; tkhd->matrix[4] = 1 << 16; tkhd->matrix[8] = 16384 << 16; tkhd->width = 0; tkhd->height = 0; } static void atom_tkhd_clear (AtomTKHD * tkhd) { atom_full_clear (&tkhd->header); } static void atom_trak_init (AtomTRAK * trak, AtomsContext * context) { atom_header_set (&trak->header, FOURCC_trak, 0, 0); atom_tkhd_init (&trak->tkhd, context); trak->edts = NULL; atom_mdia_init (&trak->mdia, context); } AtomTRAK * atom_trak_new (AtomsContext * context) { AtomTRAK *trak = g_new0 (AtomTRAK, 1); atom_trak_init (trak, context); return trak; } static void atom_trak_clear (AtomTRAK * trak) { atom_clear (&trak->header); atom_tkhd_clear (&trak->tkhd); if (trak->edts) atom_edts_free (trak->edts); atom_mdia_clear (&trak->mdia); } static void atom_trak_free (AtomTRAK * trak) { atom_trak_clear (trak); g_free (trak); } static void atom_ilst_init (AtomILST * ilst) { atom_header_set (&ilst->header, FOURCC_ilst, 0, 0); ilst->entries = NULL; } static AtomILST * atom_ilst_new (void) { AtomILST *ilst = g_new0 (AtomILST, 1); atom_ilst_init (ilst); return ilst; } static void atom_ilst_free (AtomILST * ilst) { if (ilst->entries) atom_info_list_free (ilst->entries); atom_clear (&ilst->header); g_free (ilst); } static void atom_meta_init (AtomMETA * meta) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&meta->header, FOURCC_meta, 0, 0, 0, flags); atom_hdlr_init (&meta->hdlr); /* FIXME (ISOM says this is always 0) */ meta->hdlr.component_type = FOURCC_mhlr; meta->hdlr.handler_type = FOURCC_mdir; meta->ilst = NULL; } static AtomMETA * atom_meta_new (void) { AtomMETA *meta = g_new0 (AtomMETA, 1); atom_meta_init (meta); return meta; } static void atom_meta_free (AtomMETA * meta) { atom_full_clear (&meta->header); atom_hdlr_clear (&meta->hdlr); if (meta->ilst) atom_ilst_free (meta->ilst); meta->ilst = NULL; g_free (meta); } static void atom_udta_init (AtomUDTA * udta) { atom_header_set (&udta->header, FOURCC_udta, 0, 0); udta->meta = NULL; } static AtomUDTA * atom_udta_new (void) { AtomUDTA *udta = g_new0 (AtomUDTA, 1); atom_udta_init (udta); return udta; } static void atom_udta_free (AtomUDTA * udta) { atom_clear (&udta->header); if (udta->meta) atom_meta_free (udta->meta); udta->meta = NULL; if (udta->entries) atom_info_list_free (udta->entries); g_free (udta); } static void atom_tag_data_init (AtomTagData * data) { guint8 flags[] = { 0, 0, 0 }; atom_full_init (&data->header, FOURCC_data, 0, 0, 0, flags); } static void atom_tag_data_clear (AtomTagData * data) { atom_full_clear (&data->header); g_free (data->data); data->datalen = 0; } /* * Fourcc is the tag fourcc * flags will be truncated to 24bits */ static AtomTag * atom_tag_new (guint32 fourcc, guint32 flags_as_uint) { AtomTag *tag = g_new0 (AtomTag, 1); tag->header.type = fourcc; atom_tag_data_init (&tag->data); tag->data.header.flags[2] = flags_as_uint & 0xFF; tag->data.header.flags[1] = (flags_as_uint & 0xFF00) >> 8; tag->data.header.flags[0] = (flags_as_uint & 0xFF0000) >> 16; return tag; } static void atom_tag_free (AtomTag * tag) { atom_clear (&tag->header); atom_tag_data_clear (&tag->data); g_free (tag); } static void atom_mvhd_init (AtomMVHD * mvhd) { guint8 flags[3] = { 0, 0, 0 }; atom_full_init (&(mvhd->header), FOURCC_mvhd, sizeof (AtomMVHD), 0, 0, flags); common_time_info_init (&mvhd->time_info); mvhd->prefered_rate = 1 << 16; mvhd->volume = 1 << 8; mvhd->reserved3 = 0; memset (mvhd->reserved4, 0, sizeof (guint32[2])); memset (mvhd->matrix, 0, sizeof (guint32[9])); mvhd->matrix[0] = 1 << 16; mvhd->matrix[4] = 1 << 16; mvhd->matrix[8] = 16384 << 16; mvhd->preview_time = 0; mvhd->preview_duration = 0; mvhd->poster_time = 0; mvhd->selection_time = 0; mvhd->selection_duration = 0; mvhd->current_time = 0; mvhd->next_track_id = 1; } static void atom_mvhd_clear (AtomMVHD * mvhd) { atom_full_clear (&mvhd->header); } static void atom_moov_init (AtomMOOV * moov, AtomsContext * context) { atom_header_set (&(moov->header), FOURCC_moov, 0, 0); atom_mvhd_init (&(moov->mvhd)); moov->udta = NULL; moov->traks = NULL; moov->context = *context; } AtomMOOV * atom_moov_new (AtomsContext * context) { AtomMOOV *moov = g_new0 (AtomMOOV, 1); atom_moov_init (moov, context); return moov; } void atom_moov_free (AtomMOOV * moov) { GList *walker; atom_clear (&moov->header); atom_mvhd_clear (&moov->mvhd); walker = moov->traks; while (walker) { atom_trak_free ((AtomTRAK *) walker->data); walker = g_list_next (walker); } g_list_free (moov->traks); moov->traks = NULL; if (moov->udta) { atom_udta_free (moov->udta); moov->udta = NULL; } g_free (moov); } /* -- end of init / free -- */ /* -- copy data functions -- */ static guint8 atom_full_get_version (AtomFull * full) { return full->version; } static guint64 common_time_info_copy_data (TimeInfo * ti, gboolean trunc_to_32, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (trunc_to_32) { prop_copy_uint32 ((guint32) ti->creation_time, buffer, size, offset); prop_copy_uint32 ((guint32) ti->modification_time, buffer, size, offset); prop_copy_uint32 (ti->timescale, buffer, size, offset); prop_copy_uint32 ((guint32) ti->duration, buffer, size, offset); } else { prop_copy_uint64 (ti->creation_time, buffer, size, offset); prop_copy_uint64 (ti->modification_time, buffer, size, offset); prop_copy_uint32 (ti->timescale, buffer, size, offset); prop_copy_uint64 (ti->duration, buffer, size, offset); } return *offset - original_offset; } static void atom_write_size (guint8 ** buffer, guint64 * size, guint64 * offset, guint64 atom_pos) { /* this only works for non-extended atom size, which is OK * (though it could be made to do mem_move, etc and write extended size) */ prop_copy_uint32 (*offset - atom_pos, buffer, size, &atom_pos); } guint64 atom_copy_data (Atom * atom, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; /* copies type and size */ prop_copy_uint32 (atom->size, buffer, size, offset); prop_copy_fourcc (atom->type, buffer, size, offset); /* extended size needed */ if (atom->size == 1) { /* really should not happen other than with mdat atom; * would be a problem for size (re)write code, not to mention memory */ g_return_val_if_fail (atom->type == FOURCC_mdat, 0); prop_copy_uint64 (atom->extended_size, buffer, size, offset); } return *offset - original_offset; } static guint64 atom_full_copy_data (AtomFull * atom, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&atom->header, buffer, size, offset)) { return 0; } prop_copy_uint8 (atom->version, buffer, size, offset); prop_copy_uint8_array (atom->flags, 3, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_info_list_copy_data (GList * ai, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; while (ai) { AtomInfo *info = (AtomInfo *) ai->data; if (!info->copy_data_func (info->atom, buffer, size, offset)) { return 0; } ai = g_list_next (ai); } return *offset - original_offset; } static guint64 atom_data_copy_data (AtomData * data, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&data->header, buffer, size, offset)) { return 0; } if (data->datalen) prop_copy_uint8_array (data->data, data->datalen, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_uuid_copy_data (AtomUUID * uuid, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&uuid->header, buffer, size, offset)) { return 0; } prop_copy_uint8_array (uuid->uuid, 16, buffer, size, offset); if (uuid->datalen) prop_copy_uint8_array (uuid->data, uuid->datalen, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } guint64 atom_ftyp_copy_data (AtomFTYP * ftyp, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&ftyp->header, buffer, size, offset)) { return 0; } prop_copy_fourcc (ftyp->major_brand, buffer, size, offset); prop_copy_uint32 (ftyp->version, buffer, size, offset); prop_copy_fourcc_array (ftyp->compatible_brands, ftyp->compatible_brands_size, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } guint64 atom_mvhd_copy_data (AtomMVHD * atom, guint8 ** buffer, guint64 * size, guint64 * offset) { guint8 version; guint64 original_offset = *offset; if (!atom_full_copy_data (&(atom->header), buffer, size, offset)) { return 0; } version = atom_full_get_version (&(atom->header)); if (version == 0) { common_time_info_copy_data (&atom->time_info, TRUE, buffer, size, offset); } else if (version == 1) { common_time_info_copy_data (&atom->time_info, FALSE, buffer, size, offset); } else { *offset = original_offset; return 0; } prop_copy_uint32 (atom->prefered_rate, buffer, size, offset); prop_copy_uint16 (atom->volume, buffer, size, offset); prop_copy_uint16 (atom->reserved3, buffer, size, offset); prop_copy_uint32_array (atom->reserved4, 2, buffer, size, offset); prop_copy_uint32_array (atom->matrix, 9, buffer, size, offset); prop_copy_uint32 (atom->preview_time, buffer, size, offset); prop_copy_uint32 (atom->preview_duration, buffer, size, offset); prop_copy_uint32 (atom->poster_time, buffer, size, offset); prop_copy_uint32 (atom->selection_time, buffer, size, offset); prop_copy_uint32 (atom->selection_duration, buffer, size, offset); prop_copy_uint32 (atom->current_time, buffer, size, offset); prop_copy_uint32 (atom->next_track_id, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_tkhd_copy_data (AtomTKHD * tkhd, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&tkhd->header, buffer, size, offset)) { return 0; } if (atom_full_get_version (&tkhd->header) == 0) { prop_copy_uint32 ((guint32) tkhd->creation_time, buffer, size, offset); prop_copy_uint32 ((guint32) tkhd->modification_time, buffer, size, offset); prop_copy_uint32 (tkhd->track_ID, buffer, size, offset); prop_copy_uint32 (tkhd->reserved, buffer, size, offset); prop_copy_uint32 ((guint32) tkhd->duration, buffer, size, offset); } else { prop_copy_uint64 (tkhd->creation_time, buffer, size, offset); prop_copy_uint64 (tkhd->modification_time, buffer, size, offset); prop_copy_uint32 (tkhd->track_ID, buffer, size, offset); prop_copy_uint32 (tkhd->reserved, buffer, size, offset); prop_copy_uint64 (tkhd->duration, buffer, size, offset); } prop_copy_uint32_array (tkhd->reserved2, 2, buffer, size, offset); prop_copy_uint16 (tkhd->layer, buffer, size, offset); prop_copy_uint16 (tkhd->alternate_group, buffer, size, offset); prop_copy_uint16 (tkhd->volume, buffer, size, offset); prop_copy_uint16 (tkhd->reserved3, buffer, size, offset); prop_copy_uint32_array (tkhd->matrix, 9, buffer, size, offset); prop_copy_uint32 (tkhd->width, buffer, size, offset); prop_copy_uint32 (tkhd->height, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_hdlr_copy_data (AtomHDLR * hdlr, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&hdlr->header, buffer, size, offset)) { return 0; } prop_copy_fourcc (hdlr->component_type, buffer, size, offset); prop_copy_fourcc (hdlr->handler_type, buffer, size, offset); prop_copy_fourcc (hdlr->manufacturer, buffer, size, offset); prop_copy_uint32 (hdlr->flags, buffer, size, offset); prop_copy_uint32 (hdlr->flags_mask, buffer, size, offset); prop_copy_size_string ((guint8 *) hdlr->name, strlen (hdlr->name), buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_vmhd_copy_data (AtomVMHD * vmhd, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&vmhd->header, buffer, size, offset)) { return 0; } prop_copy_uint16 (vmhd->graphics_mode, buffer, size, offset); prop_copy_uint16_array (vmhd->opcolor, 3, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return original_offset - *offset; } static guint64 atom_smhd_copy_data (AtomSMHD * smhd, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&smhd->header, buffer, size, offset)) { return 0; } prop_copy_uint16 (smhd->balance, buffer, size, offset); prop_copy_uint16 (smhd->reserved, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return original_offset - *offset; } static guint64 atom_hmhd_copy_data (AtomHMHD * hmhd, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&hmhd->header, buffer, size, offset)) { return 0; } prop_copy_uint16 (hmhd->max_pdu_size, buffer, size, offset); prop_copy_uint16 (hmhd->avg_pdu_size, buffer, size, offset); prop_copy_uint32 (hmhd->max_bitrate, buffer, size, offset); prop_copy_uint32 (hmhd->avg_bitrate, buffer, size, offset); prop_copy_uint32 (hmhd->sliding_avg_bitrate, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return original_offset - *offset; } static gboolean atom_url_same_file_flag (AtomURL * url) { return (url->header.flags[2] & 0x1) == 1; } static guint64 atom_url_copy_data (AtomURL * url, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&url->header, buffer, size, offset)) { return 0; } if (!atom_url_same_file_flag (url)) { prop_copy_null_terminated_string (url->location, buffer, size, offset); } atom_write_size (buffer, size, offset, original_offset); return original_offset - *offset; } guint64 atom_stts_copy_data (AtomSTTS * stts, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; guint i; if (!atom_full_copy_data (&stts->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (atom_array_get_len (&stts->entries), buffer, size, offset); /* minimize realloc */ prop_copy_ensure_buffer (buffer, size, offset, 8 * atom_array_get_len (&stts->entries)); for (i = 0; i < atom_array_get_len (&stts->entries); i++) { STTSEntry *entry = &atom_array_index (&stts->entries, i); prop_copy_uint32 (entry->sample_count, buffer, size, offset); prop_copy_int32 (entry->sample_delta, buffer, size, offset); } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_sample_entry_copy_data (SampleTableEntry * se, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&se->header, buffer, size, offset)) { return 0; } prop_copy_uint8_array (se->reserved, 6, buffer, size, offset); prop_copy_uint16 (se->data_reference_index, buffer, size, offset); return *offset - original_offset; } static guint64 atom_esds_copy_data (AtomESDS * esds, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&esds->header, buffer, size, offset)) { return 0; } if (!desc_es_descriptor_copy_data (&esds->es, buffer, size, offset)) { return 0; } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_frma_copy_data (AtomFRMA * frma, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&(frma->header), buffer, size, offset)) return 0; prop_copy_fourcc (frma->media_type, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_mp4s_copy_data (SampleTableEntryMP4S * mp4s, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_sample_entry_copy_data (&mp4s->se, buffer, size, offset)) { return 0; } if (!atom_esds_copy_data (&mp4s->es, buffer, size, offset)) { return 0; } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_hint_sample_entry_copy_data (AtomHintSampleEntry * hse, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_sample_entry_copy_data (&hse->se, buffer, size, offset)) { return 0; } prop_copy_uint32 (hse->size, buffer, size, offset); prop_copy_uint8_array (hse->data, hse->size, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 sample_entry_mp4a_copy_data (SampleTableEntryMP4A * mp4a, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_sample_entry_copy_data (&mp4a->se, buffer, size, offset)) { return 0; } prop_copy_uint16 (mp4a->version, buffer, size, offset); prop_copy_uint16 (mp4a->revision_level, buffer, size, offset); prop_copy_uint32 (mp4a->vendor, buffer, size, offset); prop_copy_uint16 (mp4a->channels, buffer, size, offset); prop_copy_uint16 (mp4a->sample_size, buffer, size, offset); prop_copy_uint16 (mp4a->compression_id, buffer, size, offset); prop_copy_uint16 (mp4a->packet_size, buffer, size, offset); prop_copy_uint32 (mp4a->sample_rate, buffer, size, offset); /* this should always be 0 for mp4 flavor */ if (mp4a->version == 1) { prop_copy_uint32 (mp4a->samples_per_packet, buffer, size, offset); prop_copy_uint32 (mp4a->bytes_per_packet, buffer, size, offset); prop_copy_uint32 (mp4a->bytes_per_frame, buffer, size, offset); prop_copy_uint32 (mp4a->bytes_per_sample, buffer, size, offset); } if (mp4a->extension_atoms) { if (!atom_info_list_copy_data (mp4a->extension_atoms, buffer, size, offset)) return 0; } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 sample_entry_mp4v_copy_data (SampleTableEntryMP4V * mp4v, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_sample_entry_copy_data (&mp4v->se, buffer, size, offset)) { return 0; } prop_copy_uint16 (mp4v->version, buffer, size, offset); prop_copy_uint16 (mp4v->revision_level, buffer, size, offset); prop_copy_fourcc (mp4v->vendor, buffer, size, offset); prop_copy_uint32 (mp4v->temporal_quality, buffer, size, offset); prop_copy_uint32 (mp4v->spatial_quality, buffer, size, offset); prop_copy_uint16 (mp4v->width, buffer, size, offset); prop_copy_uint16 (mp4v->height, buffer, size, offset); prop_copy_uint32 (mp4v->horizontal_resolution, buffer, size, offset); prop_copy_uint32 (mp4v->vertical_resolution, buffer, size, offset); prop_copy_uint32 (mp4v->datasize, buffer, size, offset); prop_copy_uint16 (mp4v->frame_count, buffer, size, offset); prop_copy_fixed_size_string ((guint8 *) mp4v->compressor, 32, buffer, size, offset); prop_copy_uint16 (mp4v->depth, buffer, size, offset); prop_copy_uint16 (mp4v->color_table_id, buffer, size, offset); /* extra atoms */ if (mp4v->extension_atoms && !atom_info_list_copy_data (mp4v->extension_atoms, buffer, size, offset)) return 0; atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } guint64 atom_stsz_copy_data (AtomSTSZ * stsz, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; guint i; if (!atom_full_copy_data (&stsz->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (stsz->sample_size, buffer, size, offset); prop_copy_uint32 (stsz->table_size, buffer, size, offset); if (stsz->sample_size == 0) { /* minimize realloc */ prop_copy_ensure_buffer (buffer, size, offset, 4 * stsz->table_size); /* entry count must match sample count */ g_assert (atom_array_get_len (&stsz->entries) == stsz->table_size); for (i = 0; i < atom_array_get_len (&stsz->entries); i++) { prop_copy_uint32 (atom_array_index (&stsz->entries, i), buffer, size, offset); } } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } guint64 atom_stsc_copy_data (AtomSTSC * stsc, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; guint i; if (!atom_full_copy_data (&stsc->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (atom_array_get_len (&stsc->entries), buffer, size, offset); /* minimize realloc */ prop_copy_ensure_buffer (buffer, size, offset, 12 * atom_array_get_len (&stsc->entries)); for (i = 0; i < atom_array_get_len (&stsc->entries); i++) { STSCEntry *entry = &atom_array_index (&stsc->entries, i); prop_copy_uint32 (entry->first_chunk, buffer, size, offset); prop_copy_uint32 (entry->samples_per_chunk, buffer, size, offset); prop_copy_uint32 (entry->sample_description_index, buffer, size, offset); } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } guint64 atom_ctts_copy_data (AtomCTTS * ctts, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; guint i; if (!atom_full_copy_data (&ctts->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (atom_array_get_len (&ctts->entries), buffer, size, offset); /* minimize realloc */ prop_copy_ensure_buffer (buffer, size, offset, 8 * atom_array_get_len (&ctts->entries)); for (i = 0; i < atom_array_get_len (&ctts->entries); i++) { CTTSEntry *entry = &atom_array_index (&ctts->entries, i); prop_copy_uint32 (entry->samplecount, buffer, size, offset); prop_copy_uint32 (entry->sampleoffset, buffer, size, offset); } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } guint64 atom_stco64_copy_data (AtomSTCO64 * stco64, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; guint i; gboolean trunc_to_32 = stco64->header.header.type == FOURCC_stco; if (!atom_full_copy_data (&stco64->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (atom_array_get_len (&stco64->entries), buffer, size, offset); /* minimize realloc */ prop_copy_ensure_buffer (buffer, size, offset, 8 * atom_array_get_len (&stco64->entries)); for (i = 0; i < atom_array_get_len (&stco64->entries); i++) { guint64 *value = &atom_array_index (&stco64->entries, i); if (trunc_to_32) { prop_copy_uint32 ((guint32) * value, buffer, size, offset); } else { prop_copy_uint64 (*value, buffer, size, offset); } } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } guint64 atom_stss_copy_data (AtomSTSS * stss, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; guint i; if (atom_array_get_len (&stss->entries) == 0) { /* FIXME not needing this atom might be confused with error while copying */ return 0; } if (!atom_full_copy_data (&stss->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (atom_array_get_len (&stss->entries), buffer, size, offset); /* minimize realloc */ prop_copy_ensure_buffer (buffer, size, offset, 4 * atom_array_get_len (&stss->entries)); for (i = 0; i < atom_array_get_len (&stss->entries); i++) { prop_copy_uint32 (atom_array_index (&stss->entries, i), buffer, size, offset); } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_stsd_copy_data (AtomSTSD * stsd, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; GList *walker; if (!atom_full_copy_data (&stsd->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (stsd->n_entries, buffer, size, offset); for (walker = g_list_last (stsd->entries); walker != NULL; walker = g_list_previous (walker)) { SampleTableEntry *se = (SampleTableEntry *) walker->data; switch (((Atom *) walker->data)->type) { case FOURCC_mp4a: if (!sample_entry_mp4a_copy_data ((SampleTableEntryMP4A *) walker->data, buffer, size, offset)) { return 0; } break; case FOURCC_mp4s: if (!atom_mp4s_copy_data ((SampleTableEntryMP4S *) walker->data, buffer, size, offset)) { return 0; } break; case FOURCC_mp4v: if (!sample_entry_mp4v_copy_data ((SampleTableEntryMP4V *) walker->data, buffer, size, offset)) { return 0; } break; default: if (se->kind == VIDEO) { if (!sample_entry_mp4v_copy_data ((SampleTableEntryMP4V *) walker->data, buffer, size, offset)) { return 0; } } else if (se->kind == AUDIO) { if (!sample_entry_mp4a_copy_data ((SampleTableEntryMP4A *) walker->data, buffer, size, offset)) { return 0; } } else { if (!atom_hint_sample_entry_copy_data ( (AtomHintSampleEntry *) walker->data, buffer, size, offset)) { return 0; } } break; } } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_stbl_copy_data (AtomSTBL * stbl, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&stbl->header, buffer, size, offset)) { return 0; } if (!atom_stsd_copy_data (&stbl->stsd, buffer, size, offset)) { return 0; } if (!atom_stts_copy_data (&stbl->stts, buffer, size, offset)) { return 0; } /* this atom is optional, so let's check if we need it * (to avoid false error) */ if (atom_array_get_len (&stbl->stss.entries)) { if (!atom_stss_copy_data (&stbl->stss, buffer, size, offset)) { return 0; } } if (!atom_stsc_copy_data (&stbl->stsc, buffer, size, offset)) { return 0; } if (!atom_stsz_copy_data (&stbl->stsz, buffer, size, offset)) { return 0; } if (stbl->ctts) { if (!atom_ctts_copy_data (stbl->ctts, buffer, size, offset)) { return 0; } } if (!atom_stco64_copy_data (&stbl->stco64, buffer, size, offset)) { return 0; } atom_write_size (buffer, size, offset, original_offset); return original_offset - *offset; } static guint64 atom_dref_copy_data (AtomDREF * dref, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; GList *walker; if (!atom_full_copy_data (&dref->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (g_list_length (dref->entries), buffer, size, offset); walker = dref->entries; while (walker != NULL) { Atom *atom = (Atom *) walker->data; if (atom->type == FOURCC_url_) { atom_url_copy_data ((AtomURL *) atom, buffer, size, offset); } else if (atom->type == FOURCC_alis) { atom_full_copy_data ((AtomFull *) atom, buffer, size, offset); } else { g_error ("Unsupported atom used inside dref atom"); } walker = g_list_next (walker); } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_dinf_copy_data (AtomDINF * dinf, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&dinf->header, buffer, size, offset)) { return 0; } if (!atom_dref_copy_data (&dinf->dref, buffer, size, offset)) { return 0; } atom_write_size (buffer, size, offset, original_offset); return original_offset - *offset; } static guint64 atom_minf_copy_data (AtomMINF * minf, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&minf->header, buffer, size, offset)) { return 0; } if (minf->vmhd) { if (!atom_vmhd_copy_data (minf->vmhd, buffer, size, offset)) { return 0; } } else if (minf->smhd) { if (!atom_smhd_copy_data (minf->smhd, buffer, size, offset)) { return 0; } } else if (minf->hmhd) { if (!atom_hmhd_copy_data (minf->hmhd, buffer, size, offset)) { return 0; } } if (minf->hdlr) { if (!atom_hdlr_copy_data (minf->hdlr, buffer, size, offset)) { return 0; } } if (!atom_dinf_copy_data (&minf->dinf, buffer, size, offset)) { return 0; } if (!atom_stbl_copy_data (&minf->stbl, buffer, size, offset)) { return 0; } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_mdhd_copy_data (AtomMDHD * mdhd, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&mdhd->header, buffer, size, offset)) { return 0; } if (!common_time_info_copy_data (&mdhd->time_info, atom_full_get_version (&mdhd->header) == 0, buffer, size, offset)) { return 0; } prop_copy_uint16 (mdhd->language_code, buffer, size, offset); prop_copy_uint16 (mdhd->quality, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_mdia_copy_data (AtomMDIA * mdia, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&mdia->header, buffer, size, offset)) { return 0; } if (!atom_mdhd_copy_data (&mdia->mdhd, buffer, size, offset)) { return 0; } if (!atom_hdlr_copy_data (&mdia->hdlr, buffer, size, offset)) { return 0; } if (!atom_minf_copy_data (&mdia->minf, buffer, size, offset)) { return 0; } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_elst_copy_data (AtomELST * elst, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; GSList *walker; if (!atom_full_copy_data (&elst->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (g_slist_length (elst->entries), buffer, size, offset); for (walker = elst->entries; walker != NULL; walker = g_slist_next (walker)) { EditListEntry *entry = (EditListEntry *) walker->data; prop_copy_uint32 (entry->duration, buffer, size, offset); prop_copy_uint32 (entry->media_time, buffer, size, offset); prop_copy_uint32 (entry->media_rate, buffer, size, offset); } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_edts_copy_data (AtomEDTS * edts, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&(edts->header), buffer, size, offset)) return 0; if (!atom_elst_copy_data (&(edts->elst), buffer, size, offset)) return 0; atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } guint64 atom_trak_copy_data (AtomTRAK * trak, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&trak->header, buffer, size, offset)) { return 0; } if (!atom_tkhd_copy_data (&trak->tkhd, buffer, size, offset)) { return 0; } if (trak->edts) { if (!atom_edts_copy_data (trak->edts, buffer, size, offset)) { return 0; } } if (!atom_mdia_copy_data (&trak->mdia, buffer, size, offset)) { return 0; } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_tag_data_copy_data (AtomTagData * data, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&data->header, buffer, size, offset)) { return 0; } prop_copy_uint32 (data->reserved, buffer, size, offset); prop_copy_uint8_array (data->data, data->datalen, buffer, size, offset); atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_tag_copy_data (AtomTag * tag, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&tag->header, buffer, size, offset)) { return 0; } if (!atom_tag_data_copy_data (&tag->data, buffer, size, offset)) { return 0; } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_ilst_copy_data (AtomILST * ilst, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&ilst->header, buffer, size, offset)) { return 0; } /* extra atoms */ if (ilst->entries && !atom_info_list_copy_data (ilst->entries, buffer, size, offset)) return 0; atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_meta_copy_data (AtomMETA * meta, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_full_copy_data (&meta->header, buffer, size, offset)) { return 0; } if (!atom_hdlr_copy_data (&meta->hdlr, buffer, size, offset)) { return 0; } if (meta->ilst) { if (!atom_ilst_copy_data (meta->ilst, buffer, size, offset)) { return 0; } } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_udta_copy_data (AtomUDTA * udta, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&udta->header, buffer, size, offset)) { return 0; } if (udta->meta) { if (!atom_meta_copy_data (udta->meta, buffer, size, offset)) { return 0; } } if (udta->entries) { /* extra atoms */ if (!atom_info_list_copy_data (udta->entries, buffer, size, offset)) return 0; } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } guint64 atom_moov_copy_data (AtomMOOV * atom, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; GList *walker; if (!atom_copy_data (&(atom->header), buffer, size, offset)) return 0; if (!atom_mvhd_copy_data (&(atom->mvhd), buffer, size, offset)) return 0; walker = g_list_first (atom->traks); while (walker != NULL) { if (!atom_trak_copy_data ((AtomTRAK *) walker->data, buffer, size, offset)) { return 0; } walker = g_list_next (walker); } if (atom->udta) { if (!atom_udta_copy_data (atom->udta, buffer, size, offset)) { return 0; } } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } static guint64 atom_wave_copy_data (AtomWAVE * wave, guint8 ** buffer, guint64 * size, guint64 * offset) { guint64 original_offset = *offset; if (!atom_copy_data (&(wave->header), buffer, size, offset)) return 0; if (wave->extension_atoms) { if (!atom_info_list_copy_data (wave->extension_atoms, buffer, size, offset)) return 0; } atom_write_size (buffer, size, offset, original_offset); return *offset - original_offset; } /* -- end of copy data functions -- */ /* -- general functions, API and support functions */ /* add samples to tables */ static void atom_stsc_add_new_entry (AtomSTSC * stsc, guint32 first_chunk, guint32 nsamples) { STSCEntry nentry; gint len; if ((len = atom_array_get_len (&stsc->entries)) && ((atom_array_index (&stsc->entries, len - 1)).samples_per_chunk == nsamples)) return; nentry.first_chunk = first_chunk; nentry.samples_per_chunk = nsamples; nentry.sample_description_index = 1; atom_array_append (&stsc->entries, nentry, 128); } static void atom_stts_add_entry (AtomSTTS * stts, guint32 sample_count, gint32 sample_delta) { STTSEntry *entry = NULL; if (G_LIKELY (atom_array_get_len (&stts->entries) != 0)) entry = &atom_array_index (&stts->entries, atom_array_get_len (&stts->entries) - 1); if (entry && entry->sample_delta == sample_delta) { entry->sample_count += sample_count; } else { STTSEntry nentry; nentry.sample_count = sample_count; nentry.sample_delta = sample_delta; atom_array_append (&stts->entries, nentry, 256); } } static void atom_stsz_add_entry (AtomSTSZ * stsz, guint32 nsamples, guint32 size) { guint32 i; stsz->table_size += nsamples; if (stsz->sample_size != 0) { /* it is constant size, we don't need entries */ return; } for (i = 0; i < nsamples; i++) { atom_array_append (&stsz->entries, size, 1024); } } static guint32 atom_stco64_get_entry_count (AtomSTCO64 * stco64) { return atom_array_get_len (&stco64->entries); } static void atom_stco64_add_entry (AtomSTCO64 * stco64, guint64 entry) { atom_array_append (&stco64->entries, entry, 256); } static void atom_stss_add_entry (AtomSTSS * stss, guint32 sample) { atom_array_append (&stss->entries, sample, 512); } static void atom_stbl_add_stss_entry (AtomSTBL * stbl) { guint32 sample_index = stbl->stsz.table_size; atom_stss_add_entry (&stbl->stss, sample_index); } static void atom_ctts_add_entry (AtomCTTS * ctts, guint32 nsamples, guint32 offset) { CTTSEntry *entry = NULL; if (G_LIKELY (atom_array_get_len (&ctts->entries) != 0)) entry = &atom_array_index (&ctts->entries, atom_array_get_len (&ctts->entries) - 1); if (entry == NULL || entry->sampleoffset != offset) { CTTSEntry nentry; nentry.samplecount = nsamples; nentry.sampleoffset = offset; atom_array_append (&ctts->entries, nentry, 256); } else { entry->samplecount += nsamples; } } static void atom_stbl_add_ctts_entry (AtomSTBL * stbl, guint32 nsamples, guint32 offset) { if (stbl->ctts == NULL) { stbl->ctts = atom_ctts_new (); } atom_ctts_add_entry (stbl->ctts, nsamples, offset); } void atom_stbl_add_samples (AtomSTBL * stbl, guint32 nsamples, guint32 delta, guint32 size, guint64 chunk_offset, gboolean sync, gboolean do_pts, gint64 pts_offset) { atom_stts_add_entry (&stbl->stts, nsamples, delta); atom_stsz_add_entry (&stbl->stsz, nsamples, size); atom_stco64_add_entry (&stbl->stco64, chunk_offset); atom_stsc_add_new_entry (&stbl->stsc, atom_stco64_get_entry_count (&stbl->stco64), nsamples); if (sync) atom_stbl_add_stss_entry (stbl); if (do_pts) atom_stbl_add_ctts_entry (stbl, nsamples, pts_offset); } void atom_trak_add_samples (AtomTRAK * trak, guint32 nsamples, guint32 delta, guint32 size, guint64 chunk_offset, gboolean sync, gboolean do_pts, gint64 pts_offset) { AtomSTBL *stbl = &trak->mdia.minf.stbl; atom_stbl_add_samples (stbl, nsamples, delta, size, chunk_offset, sync, do_pts, pts_offset); } /* trak and moov molding */ guint32 atom_trak_get_timescale (AtomTRAK * trak) { return trak->mdia.mdhd.time_info.timescale; } static void atom_trak_set_id (AtomTRAK * trak, guint32 id) { trak->tkhd.track_ID = id; } void atom_moov_add_trak (AtomMOOV * moov, AtomTRAK * trak) { atom_trak_set_id (trak, moov->mvhd.next_track_id++); moov->traks = g_list_append (moov->traks, trak); } static guint64 atom_trak_get_duration (AtomTRAK * trak) { return trak->tkhd.duration; } static guint64 atom_stts_get_total_duration (AtomSTTS * stts) { guint i; guint64 sum = 0; for (i = 0; i < atom_array_get_len (&stts->entries); i++) { STTSEntry *entry = &atom_array_index (&stts->entries, i); sum += (guint64) (entry->sample_count) * entry->sample_delta; } return sum; } static void atom_trak_update_duration (AtomTRAK * trak, guint64 moov_timescale) { trak->mdia.mdhd.time_info.duration = atom_stts_get_total_duration (&trak->mdia.minf.stbl.stts); if (trak->mdia.mdhd.time_info.timescale != 0) { trak->tkhd.duration = gst_util_uint64_scale (trak->mdia.mdhd.time_info.duration, moov_timescale, trak->mdia.mdhd.time_info.timescale); } else { trak->tkhd.duration = 0; } } static guint32 atom_moov_get_timescale (AtomMOOV * moov) { return moov->mvhd.time_info.timescale; } void atom_moov_update_timescale (AtomMOOV * moov, guint32 timescale) { moov->mvhd.time_info.timescale = timescale; } void atom_moov_update_duration (AtomMOOV * moov) { GList *traks = moov->traks; guint64 dur, duration = 0; while (traks) { AtomTRAK *trak = (AtomTRAK *) traks->data; atom_trak_update_duration (trak, atom_moov_get_timescale (moov)); dur = atom_trak_get_duration (trak); if (dur > duration) duration = dur; traks = g_list_next (traks); } moov->mvhd.time_info.duration = duration; } static void atom_set_type (Atom * atom, guint32 fourcc) { atom->type = fourcc; } static void atom_stbl_set_64bits (AtomSTBL * stbl, gboolean use) { if (use) { atom_set_type (&stbl->stco64.header.header, FOURCC_co64); } else { atom_set_type (&stbl->stco64.header.header, FOURCC_stco); } } static void atom_trak_set_64bits (AtomTRAK * trak, gboolean use) { atom_stbl_set_64bits (&trak->mdia.minf.stbl, use); } void atom_moov_set_64bits (AtomMOOV * moov, gboolean large_file) { GList *traks = moov->traks; while (traks) { AtomTRAK *trak = (AtomTRAK *) traks->data; atom_trak_set_64bits (trak, large_file); traks = g_list_next (traks); } } void atom_stco64_chunks_add_offset (AtomSTCO64 * stco64, guint32 offset) { guint i; for (i = 0; i < atom_array_get_len (&stco64->entries); i++) { guint64 *value = &atom_array_index (&stco64->entries, i); *value += offset; } } void atom_moov_chunks_add_offset (AtomMOOV * moov, guint32 offset) { GList *traks = moov->traks; while (traks) { AtomTRAK *trak = (AtomTRAK *) traks->data; atom_stco64_chunks_add_offset (&trak->mdia.minf.stbl.stco64, offset); traks = g_list_next (traks); } } /* * Meta tags functions */ static void atom_moov_init_metatags (AtomMOOV * moov, AtomsContext * context) { if (!moov->udta) { moov->udta = atom_udta_new (); } if (context->flavor != ATOMS_TREE_FLAVOR_3GP) { if (!moov->udta->meta) { moov->udta->meta = atom_meta_new (); } if (!moov->udta->meta->ilst) { moov->udta->meta->ilst = atom_ilst_new (); } } } static void atom_tag_data_alloc_data (AtomTagData * data, guint size) { if (data->data != NULL) { g_free (data->data); } data->data = g_new0 (guint8, size); data->datalen = size; } static void atom_moov_append_tag (AtomMOOV * moov, AtomInfo * tag) { GList **entries; atom_moov_init_metatags (moov, &moov->context); if (moov->udta->meta) entries = &moov->udta->meta->ilst->entries; else entries = &moov->udta->entries; *entries = g_list_append (*entries, tag); } void atom_moov_add_tag (AtomMOOV * moov, guint32 fourcc, guint32 flags, const guint8 * data, guint size) { AtomTag *tag; AtomTagData *tdata; tag = atom_tag_new (fourcc, flags); tdata = &tag->data; atom_tag_data_alloc_data (tdata, size); g_memmove (tdata->data, data, size); atom_moov_append_tag (moov, build_atom_info_wrapper ((Atom *) tag, atom_tag_copy_data, atom_tag_free)); } void atom_moov_add_str_tag (AtomMOOV * moov, guint32 fourcc, const gchar * value) { gint len = strlen (value); if (len > 0) atom_moov_add_tag (moov, fourcc, METADATA_TEXT_FLAG, (guint8 *) value, len); } void atom_moov_add_uint_tag (AtomMOOV * moov, guint32 fourcc, guint32 flags, guint32 value) { guint8 data[8] = { 0, }; if (flags) { GST_WRITE_UINT16_BE (data, value); atom_moov_add_tag (moov, fourcc, flags, data, 2); } else { GST_WRITE_UINT32_BE (data + 2, value); atom_moov_add_tag (moov, fourcc, flags, data, 8); } } void atom_moov_add_blob_tag (AtomMOOV * moov, guint8 * data, guint size) { AtomData *data_atom; GstBuffer *buf; guint len; guint32 fourcc; if (size < 8) return; /* blob is unparsed atom; * extract size and fourcc, and wrap remainder in data atom */ len = GST_READ_UINT32_BE (data); fourcc = GST_READ_UINT32_LE (data + 4); if (len > size) return; buf = gst_buffer_new (); GST_BUFFER_SIZE (buf) = len - 8; GST_BUFFER_DATA (buf) = data + 8; data_atom = atom_data_new_from_gst_buffer (fourcc, buf); gst_buffer_unref (buf); atom_moov_append_tag (moov, build_atom_info_wrapper ((Atom *) data_atom, atom_data_copy_data, atom_data_free)); } void atom_moov_add_3gp_tag (AtomMOOV * moov, guint32 fourcc, guint8 * data, guint size) { AtomData *data_atom; GstBuffer *buf; guint8 *bdata; /* need full atom */ buf = gst_buffer_new_and_alloc (size + 4); bdata = GST_BUFFER_DATA (buf); /* full atom: version and flags */ GST_WRITE_UINT32_BE (bdata, 0); memcpy (bdata + 4, data, size); data_atom = atom_data_new_from_gst_buffer (fourcc, buf); gst_buffer_unref (buf); atom_moov_append_tag (moov, build_atom_info_wrapper ((Atom *) data_atom, atom_data_copy_data, atom_data_free)); } guint16 language_code (const char *lang) { g_return_val_if_fail (lang != NULL, 0); g_return_val_if_fail (strlen (lang) == 3, 0); return (((lang[0] - 0x60) & 0x1F) << 10) + (((lang[1] - 0x60) & 0x1F) << 5) + ((lang[2] - 0x60) & 0x1F); } void atom_moov_add_3gp_str_int_tag (AtomMOOV * moov, guint32 fourcc, const gchar * value, gint16 ivalue) { gint len = 0, size = 0; guint8 *data; if (value) { len = strlen (value); size = len + 3; } if (ivalue >= 0) size += 2; data = g_malloc (size + 3); /* language tag and null-terminated UTF-8 string */ if (value) { GST_WRITE_UINT16_BE (data, language_code (GST_QT_MUX_DEFAULT_TAG_LANGUAGE)); /* include 0 terminator */ memcpy (data + 2, value, len + 1); } /* 16-bit unsigned int if standalone, otherwise 8-bit */ if (ivalue >= 0) { if (size == 2) GST_WRITE_UINT16_BE (data + size - 2, ivalue); else { GST_WRITE_UINT8 (data + size - 2, ivalue & 0xFF); size--; } } atom_moov_add_3gp_tag (moov, fourcc, data, size); g_free (data); } void atom_moov_add_3gp_str_tag (AtomMOOV * moov, guint32 fourcc, const gchar * value) { atom_moov_add_3gp_str_int_tag (moov, fourcc, value, -1); } void atom_moov_add_3gp_uint_tag (AtomMOOV * moov, guint32 fourcc, guint16 value) { atom_moov_add_3gp_str_int_tag (moov, fourcc, NULL, value); } void atom_moov_add_xmp_tags (AtomMOOV * moov, const GstTagList * tags) { GstBuffer *xmpbuffer; AtomData *data_atom = NULL; if (moov->context.flavor == ATOMS_TREE_FLAVOR_MOV) { xmpbuffer = gst_tag_list_to_xmp_buffer (tags, TRUE); if (xmpbuffer) { data_atom = atom_data_new_from_gst_buffer (FOURCC_XMP_, xmpbuffer); atom_moov_init_metatags (moov, &moov->context); moov->udta->entries = g_list_append (moov->udta->entries, build_atom_info_wrapper ((Atom *) data_atom, atom_data_copy_data, atom_data_free)); gst_buffer_unref (xmpbuffer); } } else { GST_DEBUG ("Not adding xmp to moov atom, it is only used in 'mov' format"); } } /* * Functions for specifying media types */ static void atom_minf_set_audio (AtomMINF * minf) { atom_minf_clear_handlers (minf); minf->smhd = atom_smhd_new (); } static void atom_minf_set_video (AtomMINF * minf, AtomsContext * context) { atom_minf_clear_handlers (minf); minf->vmhd = atom_vmhd_new (context); } static void atom_hdlr_set_type (AtomHDLR * hdlr, AtomsContext * context, guint32 comp_type, guint32 hdlr_type) { if (context->flavor == ATOMS_TREE_FLAVOR_MOV) { hdlr->component_type = comp_type; } hdlr->handler_type = hdlr_type; } static void atom_hdlr_set_name (AtomHDLR * hdlr, const char *name) { if (hdlr->name) g_free (hdlr->name); hdlr->name = g_strdup (name); } static void atom_mdia_set_hdlr_type_audio (AtomMDIA * mdia, AtomsContext * context) { atom_hdlr_set_type (&mdia->hdlr, context, FOURCC_mhlr, FOURCC_soun); /* Some players (low-end hardware) check for this name, which is what * QuickTime itself sets */ atom_hdlr_set_name (&mdia->hdlr, "SoundHandler"); } static void atom_mdia_set_hdlr_type_video (AtomMDIA * mdia, AtomsContext * context) { atom_hdlr_set_type (&mdia->hdlr, context, FOURCC_mhlr, FOURCC_vide); /* Some players (low-end hardware) check for this name, which is what * QuickTime itself sets */ atom_hdlr_set_name (&mdia->hdlr, "VideoHandler"); } static void atom_mdia_set_audio (AtomMDIA * mdia, AtomsContext * context) { atom_mdia_set_hdlr_type_audio (mdia, context); atom_minf_set_audio (&mdia->minf); } static void atom_mdia_set_video (AtomMDIA * mdia, AtomsContext * context) { atom_mdia_set_hdlr_type_video (mdia, context); atom_minf_set_video (&mdia->minf, context); } static void atom_tkhd_set_audio (AtomTKHD * tkhd) { tkhd->volume = 0x0100; tkhd->width = tkhd->height = 0; } static void atom_tkhd_set_video (AtomTKHD * tkhd, AtomsContext * context, guint32 width, guint32 height) { tkhd->volume = 0; /* qt and ISO base media do not contradict, and examples agree */ tkhd->width = width; tkhd->height = height; } static void atom_edts_add_entry (AtomEDTS * edts, EditListEntry * entry) { edts->elst.entries = g_slist_append (edts->elst.entries, entry); } /* * Adds a new entry to this trak edits list * duration is in the moov's timescale * media_time is the offset in the media time to start from (media's timescale) * rate is a 32 bits fixed-point */ void atom_trak_add_elst_entry (AtomTRAK * trak, guint32 duration, guint32 media_time, guint32 rate) { EditListEntry *entry = g_new (EditListEntry, 1); entry->duration = duration; entry->media_time = media_time; entry->media_rate = rate; if (trak->edts == NULL) { trak->edts = atom_edts_new (); } atom_edts_add_entry (trak->edts, entry); } /* re-negotiation is prevented at top-level, so only 1 entry expected. * Quite some more care here and elsewhere may be needed to * support several entries */ static SampleTableEntryMP4A * atom_trak_add_audio_entry (AtomTRAK * trak, AtomsContext * context, guint32 type) { AtomSTSD *stsd = &trak->mdia.minf.stbl.stsd; SampleTableEntryMP4A *mp4a = sample_entry_mp4a_new (); mp4a->se.header.type = type; mp4a->se.kind = AUDIO; mp4a->compression_id = -1; mp4a->se.data_reference_index = 1; stsd->entries = g_list_prepend (stsd->entries, mp4a); stsd->n_entries++; return mp4a; } static SampleTableEntryMP4V * atom_trak_add_video_entry (AtomTRAK * trak, AtomsContext * context, guint32 type) { SampleTableEntryMP4V *mp4v = sample_entry_mp4v_new (context); AtomSTSD *stsd = &trak->mdia.minf.stbl.stsd; mp4v->se.header.type = type; mp4v->se.kind = VIDEO; mp4v->se.data_reference_index = 1; mp4v->horizontal_resolution = 72 << 16; mp4v->vertical_resolution = 72 << 16; if (context->flavor == ATOMS_TREE_FLAVOR_MOV) { mp4v->spatial_quality = 512; mp4v->temporal_quality = 512; } stsd->entries = g_list_prepend (stsd->entries, mp4v); stsd->n_entries++; return mp4v; } static void atom_trak_set_constant_size_samples (AtomTRAK * trak, guint32 sample_size) { trak->mdia.minf.stbl.stsz.sample_size = sample_size; } static void atom_trak_set_audio (AtomTRAK * trak, AtomsContext * context) { atom_tkhd_set_audio (&trak->tkhd); atom_mdia_set_audio (&trak->mdia, context); } static void atom_trak_set_video (AtomTRAK * trak, AtomsContext * context, guint32 width, guint32 height) { atom_tkhd_set_video (&trak->tkhd, context, width, height); atom_mdia_set_video (&trak->mdia, context); } static void atom_trak_set_audio_commons (AtomTRAK * trak, AtomsContext * context, guint32 rate) { atom_trak_set_audio (trak, context); trak->mdia.mdhd.time_info.timescale = rate; } static void atom_trak_set_video_commons (AtomTRAK * trak, AtomsContext * context, guint32 rate, guint32 width, guint32 height) { atom_trak_set_video (trak, context, width, height); trak->mdia.mdhd.time_info.timescale = rate; trak->tkhd.width = width << 16; trak->tkhd.height = height << 16; } void atom_trak_set_audio_type (AtomTRAK * trak, AtomsContext * context, AudioSampleEntry * entry, guint32 scale, AtomInfo * ext, gint sample_size) { SampleTableEntryMP4A *ste; atom_trak_set_audio_commons (trak, context, scale); atom_stsd_remove_entries (&trak->mdia.minf.stbl.stsd); ste = atom_trak_add_audio_entry (trak, context, entry->fourcc); trak->is_video = FALSE; trak->is_h264 = FALSE; ste->version = entry->version; ste->compression_id = entry->compression_id; ste->sample_size = entry->sample_size; ste->sample_rate = entry->sample_rate << 16; ste->channels = entry->channels; ste->samples_per_packet = entry->samples_per_packet; ste->bytes_per_sample = entry->bytes_per_sample; ste->bytes_per_packet = entry->bytes_per_packet; ste->bytes_per_frame = entry->bytes_per_frame; if (ext) ste->extension_atoms = g_list_prepend (ste->extension_atoms, ext); /* 0 size means variable size */ atom_trak_set_constant_size_samples (trak, sample_size); } static AtomInfo * build_pasp_extension (AtomTRAK * trak, gint par_width, gint par_height) { AtomData *atom_data; GstBuffer *buf; guint8 *data; buf = gst_buffer_new_and_alloc (8); data = GST_BUFFER_DATA (buf); /* ihdr = image header box */ GST_WRITE_UINT32_BE (data, par_width); GST_WRITE_UINT32_BE (data + 4, par_height); atom_data = atom_data_new_from_gst_buffer (FOURCC_pasp, buf); gst_buffer_unref (buf); return build_atom_info_wrapper ((Atom *) atom_data, atom_data_copy_data, atom_data_free); } void atom_trak_set_video_type (AtomTRAK * trak, AtomsContext * context, VisualSampleEntry * entry, guint32 scale, GList * ext_atoms_list) { SampleTableEntryMP4V *ste; gint dwidth, dheight; gint par_n = 0, par_d = 0; if ((entry->par_n != 1 || entry->par_d != 1) && (entry->par_n != entry->par_d)) { par_n = entry->par_n; par_d = entry->par_d; } dwidth = entry->width; dheight = entry->height; /* ISO file spec says track header w/h indicates track's visual presentation * (so this together with pixels w/h implicitly defines PAR) */ if (par_n && (context->flavor != ATOMS_TREE_FLAVOR_MOV)) { if (par_n > par_d) { dwidth = entry->width * par_n / par_d; dheight = entry->height; } else { dwidth = entry->width * par_n / par_d; dheight = entry->height; } } atom_trak_set_video_commons (trak, context, scale, dwidth, dheight); atom_stsd_remove_entries (&trak->mdia.minf.stbl.stsd); ste = atom_trak_add_video_entry (trak, context, entry->fourcc); trak->is_video = TRUE; trak->is_h264 = (entry->fourcc == FOURCC_avc1); ste->version = entry->version; ste->width = entry->width; ste->height = entry->height; ste->depth = entry->depth; ste->color_table_id = entry->color_table_id; ste->frame_count = entry->frame_count; if (ext_atoms_list) ste->extension_atoms = g_list_concat (ste->extension_atoms, ext_atoms_list); /* QT spec has a pasp extension atom in stsd that can hold PAR */ if (par_n && (context->flavor == ATOMS_TREE_FLAVOR_MOV)) { ste->extension_atoms = g_list_append (ste->extension_atoms, build_pasp_extension (trak, par_n, par_d)); } } /* some sample description construction helpers */ AtomInfo * build_esds_extension (AtomTRAK * trak, guint8 object_type, guint8 stream_type, const GstBuffer * codec_data, guint32 avg_bitrate, guint32 max_bitrate) { guint32 track_id; AtomESDS *esds; track_id = trak->tkhd.track_ID; esds = atom_esds_new (); esds->es.id = track_id & 0xFFFF; esds->es.dec_conf_desc.object_type = object_type; esds->es.dec_conf_desc.stream_type = stream_type << 2 | 0x01; if (avg_bitrate > 0) esds->es.dec_conf_desc.avg_bitrate = avg_bitrate; if (max_bitrate > 0) esds->es.dec_conf_desc.max_bitrate = max_bitrate; /* optional DecoderSpecificInfo */ if (codec_data) { DecoderSpecificInfoDescriptor *desc; esds->es.dec_conf_desc.dec_specific_info = desc = desc_dec_specific_info_new (); desc_dec_specific_info_alloc_data (desc, GST_BUFFER_SIZE (codec_data)); memcpy (desc->data, GST_BUFFER_DATA (codec_data), GST_BUFFER_SIZE (codec_data)); } return build_atom_info_wrapper ((Atom *) esds, atom_esds_copy_data, atom_esds_free); } AtomInfo * build_btrt_extension (guint32 buffer_size_db, guint32 avg_bitrate, guint32 max_bitrate) { AtomData *atom_data; GstBuffer *buf; if (buffer_size_db == 0 && avg_bitrate == 0 && max_bitrate == 0) return 0; buf = gst_buffer_new_and_alloc (12); GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf), buffer_size_db); GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + 4, max_bitrate); GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + 8, avg_bitrate); atom_data = atom_data_new_from_gst_buffer (GST_MAKE_FOURCC ('b', 't', 'r', 't'), buf); gst_buffer_unref (buf); return build_atom_info_wrapper ((Atom *) atom_data, atom_data_copy_data, atom_data_free); } static AtomInfo * build_mov_wave_extension (AtomTRAK * trak, guint32 fourcc, AtomInfo * atom1, AtomInfo * atom2, gboolean terminator) { AtomWAVE *wave; AtomFRMA *frma; Atom *ext_atom; /* Build WAVE atom for sample table entry */ wave = atom_wave_new (); /* Prepend Terminator atom to the WAVE list first, so it ends up last */ if (terminator) { ext_atom = (Atom *) atom_data_new (FOURCC_null); wave->extension_atoms = atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) ext_atom, (AtomCopyDataFunc) atom_data_copy_data, (AtomFreeFunc) atom_data_free); } /* Add supplied atoms to WAVE */ if (atom2) wave->extension_atoms = g_list_prepend (wave->extension_atoms, atom2); if (atom1) wave->extension_atoms = g_list_prepend (wave->extension_atoms, atom1); /* Add FRMA to the WAVE */ frma = atom_frma_new (); frma->media_type = fourcc; wave->extension_atoms = atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) frma, (AtomCopyDataFunc) atom_frma_copy_data, (AtomFreeFunc) atom_frma_free); return build_atom_info_wrapper ((Atom *) wave, atom_wave_copy_data, atom_wave_free); } AtomInfo * build_mov_aac_extension (AtomTRAK * trak, const GstBuffer * codec_data, guint32 avg_bitrate, guint32 max_bitrate) { AtomInfo *esds, *mp4a; GstBuffer *buf; /* Add ESDS atom to WAVE */ esds = build_esds_extension (trak, ESDS_OBJECT_TYPE_MPEG4_P3, ESDS_STREAM_TYPE_AUDIO, codec_data, avg_bitrate, max_bitrate); /* Add MP4A atom to the WAVE: * not really in spec, but makes offset based players happy */ buf = gst_buffer_new_and_alloc (4); *((guint32 *) GST_BUFFER_DATA (buf)) = 0; mp4a = build_codec_data_extension (FOURCC_mp4a, buf); gst_buffer_unref (buf); return build_mov_wave_extension (trak, FOURCC_mp4a, mp4a, esds, TRUE); } AtomInfo * build_mov_alac_extension (AtomTRAK * trak, const GstBuffer * codec_data) { AtomInfo *alac; alac = build_codec_data_extension (FOURCC_alac, codec_data); return build_mov_wave_extension (trak, FOURCC_alac, NULL, alac, TRUE); } AtomInfo * build_fiel_extension (gint fields) { AtomData *atom_data; GstBuffer *buf; if (fields == 1) { return NULL; } buf = gst_buffer_new_and_alloc (1); GST_BUFFER_DATA (buf)[0] = (guint8) fields; atom_data = atom_data_new_from_gst_buffer (GST_MAKE_FOURCC ('f', 'i', 'e', 'l'), buf); gst_buffer_unref (buf); return build_atom_info_wrapper ((Atom *) atom_data, atom_data_copy_data, atom_data_free); } AtomInfo * build_jp2x_extension (const GstBuffer * prefix) { AtomData *atom_data; if (!prefix) { return NULL; } atom_data = atom_data_new_from_gst_buffer (GST_MAKE_FOURCC ('j', 'p', '2', 'x'), prefix); return build_atom_info_wrapper ((Atom *) atom_data, atom_data_copy_data, atom_data_free); } AtomInfo * build_jp2h_extension (AtomTRAK * trak, gint width, gint height, guint32 fourcc, gint ncomp, const GValue * cmap_array, const GValue * cdef_array) { AtomData *atom_data; GstBuffer *buf; guint8 cenum; gint i; gint idhr_size = 22; gint colr_size = 15; gint cmap_size = 0, cdef_size = 0; gint cmap_array_size = 0; gint cdef_array_size = 0; GstByteWriter writer; g_return_val_if_fail (cmap_array == NULL || GST_VALUE_HOLDS_ARRAY (cmap_array), NULL); g_return_val_if_fail (cdef_array == NULL || GST_VALUE_HOLDS_ARRAY (cdef_array), NULL); if (fourcc == GST_MAKE_FOURCC ('s', 'R', 'G', 'B')) { cenum = 0x10; if (ncomp == 0) ncomp = 3; } else if (fourcc == GST_MAKE_FOURCC ('G', 'R', 'A', 'Y')) { cenum = 0x11; if (ncomp == 0) ncomp = 1; } else if (fourcc == GST_MAKE_FOURCC ('s', 'Y', 'U', 'V')) { cenum = 0x12; if (ncomp == 0) ncomp = 3; } else return NULL; if (cmap_array) { cmap_array_size = gst_value_array_get_size (cmap_array); cmap_size = 8 + cmap_array_size * 4; } if (cdef_array) { cdef_array_size = gst_value_array_get_size (cdef_array); cdef_size = 8 + 2 + cdef_array_size * 6; } buf = gst_buffer_new_and_alloc (idhr_size + colr_size + cmap_size + cdef_size); gst_byte_writer_init_with_buffer (&writer, buf, FALSE); /* ihdr = image header box */ gst_byte_writer_put_uint32_be (&writer, 22); gst_byte_writer_put_uint32_le (&writer, GST_MAKE_FOURCC ('i', 'h', 'd', 'r')); gst_byte_writer_put_uint32_be (&writer, height); gst_byte_writer_put_uint32_be (&writer, width); gst_byte_writer_put_uint16_be (&writer, ncomp); /* 8 bits per component, unsigned */ gst_byte_writer_put_uint8 (&writer, 0x7); /* compression type; reserved */ gst_byte_writer_put_uint8 (&writer, 0x7); /* colour space (un)known */ gst_byte_writer_put_uint8 (&writer, 0x0); /* intellectual property right (box present) */ gst_byte_writer_put_uint8 (&writer, 0x0); /* colour specification box */ gst_byte_writer_put_uint32_be (&writer, 15); gst_byte_writer_put_uint32_le (&writer, GST_MAKE_FOURCC ('c', 'o', 'l', 'r')); /* specification method: enumerated */ gst_byte_writer_put_uint8 (&writer, 0x1); /* precedence; reserved */ gst_byte_writer_put_uint8 (&writer, 0x0); /* approximation; reserved */ gst_byte_writer_put_uint8 (&writer, 0x0); /* enumerated colourspace */ gst_byte_writer_put_uint32_be (&writer, cenum); if (cmap_array) { gst_byte_writer_put_uint32_be (&writer, cmap_size); gst_byte_writer_put_uint32_le (&writer, GST_MAKE_FOURCC ('c', 'm', 'a', 'p')); for (i = 0; i < cmap_array_size; i++) { const GValue *item; gint value; guint16 cmp; guint8 mtyp; guint8 pcol; item = gst_value_array_get_value (cmap_array, i); value = g_value_get_int (item); /* value is '(mtyp << 24) | (pcol << 16) | cmp' */ cmp = value & 0xFFFF; mtyp = value >> 24; pcol = (value >> 16) & 0xFF; if (mtyp == 1) GST_WARNING ("MTYP of cmap atom signals Pallete Mapping, but we don't " "handle Pallete mapping atoms yet"); gst_byte_writer_put_uint16_be (&writer, cmp); gst_byte_writer_put_uint8 (&writer, mtyp); gst_byte_writer_put_uint8 (&writer, pcol); } } if (cdef_array) { gst_byte_writer_put_uint32_be (&writer, cdef_size); gst_byte_writer_put_uint32_le (&writer, GST_MAKE_FOURCC ('c', 'd', 'e', 'f')); gst_byte_writer_put_uint16_be (&writer, cdef_array_size); for (i = 0; i < cdef_array_size; i++) { const GValue *item; gint value; item = gst_value_array_get_value (cdef_array, i); value = g_value_get_int (item); gst_byte_writer_put_uint16_be (&writer, i); if (value > 0) { gst_byte_writer_put_uint16_be (&writer, 0); gst_byte_writer_put_uint16_be (&writer, value); } else if (value < 0) { gst_byte_writer_put_uint16_be (&writer, -value); gst_byte_writer_put_uint16_be (&writer, 0); /* TODO what here? */ } else { gst_byte_writer_put_uint16_be (&writer, 1); gst_byte_writer_put_uint16_be (&writer, 0); } } } g_assert (gst_byte_writer_get_remaining (&writer) == 0); atom_data = atom_data_new_from_gst_buffer (FOURCC_jp2h, buf); gst_buffer_unref (buf); return build_atom_info_wrapper ((Atom *) atom_data, atom_data_copy_data, atom_data_free); } AtomInfo * build_codec_data_extension (guint32 fourcc, const GstBuffer * codec_data) { AtomData *data; AtomInfo *result = NULL; if (codec_data) { data = atom_data_new_from_gst_buffer (fourcc, codec_data); result = build_atom_info_wrapper ((Atom *) data, atom_data_copy_data, atom_data_free); } return result; } AtomInfo * build_amr_extension (void) { guint8 ext[9]; GstBuffer *buf; AtomInfo *res; buf = gst_buffer_new (); GST_BUFFER_DATA (buf) = ext; GST_BUFFER_SIZE (buf) = sizeof (ext); /* vendor */ GST_WRITE_UINT32_LE (ext, 0); /* decoder version */ GST_WRITE_UINT8 (ext + 4, 0); /* mode set (all modes) */ GST_WRITE_UINT16_BE (ext + 5, 0x81FF); /* mode change period (no restriction) */ GST_WRITE_UINT8 (ext + 7, 0); /* frames per sample */ GST_WRITE_UINT8 (ext + 8, 1); res = build_codec_data_extension (GST_MAKE_FOURCC ('d', 'a', 'm', 'r'), buf); gst_buffer_unref (buf); return res; } AtomInfo * build_h263_extension (void) { guint8 ext[7]; GstBuffer *buf; AtomInfo *res; buf = gst_buffer_new (); GST_BUFFER_DATA (buf) = ext; GST_BUFFER_SIZE (buf) = sizeof (ext); /* vendor */ GST_WRITE_UINT32_LE (ext, 0); /* decoder version */ GST_WRITE_UINT8 (ext + 4, 0); /* level / profile */ /* FIXME ? maybe ? obtain somewhere; baseline for now */ GST_WRITE_UINT8 (ext + 5, 10); GST_WRITE_UINT8 (ext + 6, 0); res = build_codec_data_extension (GST_MAKE_FOURCC ('d', '2', '6', '3'), buf); gst_buffer_unref (buf); return res; } AtomInfo * build_gama_atom (gdouble gamma) { AtomInfo *res; guint32 gamma_fp; GstBuffer *buf; /* convert to uint32 from fixed point */ gamma_fp = (guint32) 65536 *gamma; buf = gst_buffer_new_and_alloc (4); GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf), gamma_fp); res = build_codec_data_extension (FOURCC_gama, buf); gst_buffer_unref (buf); return res; } AtomInfo * build_SMI_atom (const GstBuffer * seqh) { AtomInfo *res; GstBuffer *buf; /* the seqh plus its size and fourcc */ buf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (seqh) + 8); GST_WRITE_UINT32_LE (GST_BUFFER_DATA (buf), FOURCC_SEQH); GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + 4, GST_BUFFER_SIZE (seqh)); memcpy (GST_BUFFER_DATA (buf) + 8, GST_BUFFER_DATA (seqh), GST_BUFFER_SIZE (seqh)); res = build_codec_data_extension (FOURCC_SMI_, buf); gst_buffer_unref (buf); return res; } static AtomInfo * build_ima_adpcm_atom (gint channels, gint rate, gint blocksize) { AtomData *atom_data; GstBuffer *buf; guint8 *data; const gint ima_adpcm_atom_size = 20; guint32 fourcc; gint samplesperblock; gint bytespersec; /* The FOURCC for WAV codecs in QT is 'ms' followed by the 16 bit wave codec identifier. Note that the identifier here is big-endian, but when used within the WAVE header (below), it's little endian. */ fourcc = MS_WAVE_FOURCC (0x11); buf = gst_buffer_new_and_alloc (ima_adpcm_atom_size); data = GST_BUFFER_DATA (buf); /* This atom's content is a WAVE header, including 2 bytes of extra data. Note that all of this is little-endian, unlike most stuff in qt. */ /* 4 bytes header per channel (including 1 sample). Then 2 samples per byte for the rest. Simplifies to this. */ samplesperblock = 2 * blocksize / channels - 7; bytespersec = rate * blocksize / samplesperblock; GST_WRITE_UINT16_LE (data, 0x11); GST_WRITE_UINT16_LE (data + 2, channels); GST_WRITE_UINT32_LE (data + 4, rate); GST_WRITE_UINT32_LE (data + 8, bytespersec); GST_WRITE_UINT16_LE (data + 12, blocksize); GST_WRITE_UINT16_LE (data + 14, 4); GST_WRITE_UINT16_LE (data + 16, 2); /* Two extra bytes */ GST_WRITE_UINT16_LE (data + 18, samplesperblock); atom_data = atom_data_new_from_gst_buffer (fourcc, buf); gst_buffer_unref (buf); return build_atom_info_wrapper ((Atom *) atom_data, atom_data_copy_data, atom_data_free); } AtomInfo * build_ima_adpcm_extension (gint channels, gint rate, gint blocksize) { AtomWAVE *wave; AtomFRMA *frma; Atom *ext_atom; /* Add WAVE atom */ wave = atom_wave_new (); /* Prepend Terminator atom to the WAVE list first, so it ends up last */ ext_atom = (Atom *) atom_data_new (FOURCC_null); wave->extension_atoms = atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) ext_atom, (AtomCopyDataFunc) atom_data_copy_data, (AtomFreeFunc) atom_data_free); /* Add wave ima adpcm atom to WAVE */ wave->extension_atoms = g_list_prepend (wave->extension_atoms, build_ima_adpcm_atom (channels, rate, blocksize)); /* Add FRMA to the WAVE */ frma = atom_frma_new (); frma->media_type = MS_WAVE_FOURCC (0x11); wave->extension_atoms = atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) frma, (AtomCopyDataFunc) atom_frma_copy_data, (AtomFreeFunc) atom_frma_free); return build_atom_info_wrapper ((Atom *) wave, atom_wave_copy_data, atom_wave_free); } AtomInfo * build_uuid_xmp_atom (const GstTagList * taglist) { GstBuffer *xmp_data; AtomUUID *uuid; static guint8 xmp_uuid[] = { 0xBE, 0x7A, 0xCF, 0xCB, 0x97, 0xA9, 0x42, 0xE8, 0x9C, 0x71, 0x99, 0x94, 0x91, 0xE3, 0xAF, 0xAC }; xmp_data = gst_tag_list_to_xmp_buffer (taglist, TRUE); if (xmp_data == NULL) return NULL; uuid = atom_uuid_new (); memcpy (uuid->uuid, xmp_uuid, 16); uuid->data = g_malloc (GST_BUFFER_SIZE (xmp_data)); uuid->datalen = GST_BUFFER_SIZE (xmp_data); memcpy (uuid->data, GST_BUFFER_DATA (xmp_data), GST_BUFFER_SIZE (xmp_data)); gst_buffer_unref (xmp_data); return build_atom_info_wrapper ((Atom *) uuid, atom_uuid_copy_data, atom_uuid_free); }