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gstreamer/gst/quicktime/atoms.c
Mark Nauwelaerts b6945d4afe qtmux: simplify and fix pts_offset storing 
In particular, only write a ctts atom if and only if ever a non-zero offset.
2011-04-12 20:32:20 +01:00

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/* Quicktime muxer plugin for GStreamer
* Copyright (C) 2008-2010 Thiago Santos <thiagoss@embedded.ufcg.edu.br>
* Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
*
* 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 <string.h>
#include <glib.h>
#include <gst/gst.h>
#include <gst/base/gstbytewriter.h>
#include <gst/tag/tag.h>
/**
* 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 guint32
atom_full_get_flags_as_uint (AtomFull * full)
{
return full->flags[0] << 16 | full->flags[1] << 8 | full->flags[2];
}
static void
atom_full_set_flags_as_uint (AtomFull * full, guint32 flags_as_uint)
{
full->flags[2] = flags_as_uint & 0xFF;
full->flags[1] = (flags_as_uint & 0xFF00) >> 8;
full->flags[0] = (flags_as_uint & 0xFF0000) >> 16;
}
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);
ctts->do_pts = FALSE;
}
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_stco, 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);
atom_full_set_flags_as_uint (&tag->data.header, flags_as_uint);
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_mehd_init (AtomMEHD * mehd)
{
guint8 flags[3] = { 0, 0, 0 };
atom_full_init (&mehd->header, FOURCC_mehd, 0, 0, 1, flags);
mehd->fragment_duration = 0;
}
static void
atom_mvex_init (AtomMVEX * mvex)
{
atom_header_set (&mvex->header, FOURCC_mvex, 0, 0);
atom_mehd_init (&mvex->mehd);
mvex->trexs = NULL;
}
static void
atom_moov_init (AtomMOOV * moov, AtomsContext * context)
{
atom_header_set (&(moov->header), FOURCC_moov, 0, 0);
atom_mvhd_init (&(moov->mvhd));
atom_mvex_init (&(moov->mvex));
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;
}
static void
atom_trex_free (AtomTREX * trex)
{
atom_full_clear (&trex->header);
g_free (trex);
}
static void
atom_mvex_clear (AtomMVEX * mvex)
{
GList *walker;
atom_clear (&mvex->header);
walker = mvex->trexs;
while (walker) {
atom_trex_free ((AtomTREX *) walker->data);
walker = g_list_next (walker);
}
g_list_free (mvex->trexs);
mvex->trexs = NULL;
}
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;
}
atom_mvex_clear (&moov->mvex);
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 && stbl->ctts->do_pts) {
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;
}
static guint64
atom_mehd_copy_data (AtomMEHD * mehd, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
guint64 original_offset = *offset;
if (!atom_full_copy_data (&mehd->header, buffer, size, offset)) {
return 0;
}
prop_copy_uint64 (mehd->fragment_duration, buffer, size, offset);
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
static guint64
atom_trex_copy_data (AtomTREX * trex, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
guint64 original_offset = *offset;
if (!atom_full_copy_data (&trex->header, buffer, size, offset)) {
return 0;
}
prop_copy_uint32 (trex->track_ID, buffer, size, offset);
prop_copy_uint32 (trex->default_sample_description_index, buffer, size,
offset);
prop_copy_uint32 (trex->default_sample_duration, buffer, size, offset);
prop_copy_uint32 (trex->default_sample_size, buffer, size, offset);
prop_copy_uint32 (trex->default_sample_flags, buffer, size, offset);
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
static guint64
atom_mvex_copy_data (AtomMVEX * mvex, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
guint64 original_offset = *offset;
GList *walker;
if (!atom_copy_data (&mvex->header, buffer, size, offset)) {
return 0;
}
if (!atom_mehd_copy_data (&mvex->mehd, buffer, size, offset)) {
return 0;
}
walker = g_list_first (mvex->trexs);
while (walker != NULL) {
if (!atom_trex_copy_data ((AtomTREX *) walker->data, buffer, size, offset)) {
return 0;
}
walker = g_list_next (walker);
}
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;
}
}
if (atom->fragmented) {
if (!atom_mvex_copy_data (&atom->mvex, 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);
if (entry > G_MAXUINT32)
stco64->header.header.type = FOURCC_co64;
}
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);
if (offset != 0)
ctts->do_pts = TRUE;
} 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, 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);
/* always store to arrange for consistent content */
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, gint64 pts_offset)
{
AtomSTBL *stbl = &trak->mdia.minf.stbl;
atom_stbl_add_samples (stbl, nsamples, delta, size, chunk_offset, sync,
pts_offset);
}
/* trak and moov molding */
guint32
atom_trak_get_timescale (AtomTRAK * trak)
{
return trak->mdia.mdhd.time_info.timescale;
}
guint32
atom_trak_get_id (AtomTRAK * trak)
{
return trak->tkhd.track_ID;
}
static void
atom_trak_set_id (AtomTRAK * trak, guint32 id)
{
trak->tkhd.track_ID = id;
}
static void
atom_moov_add_trex (AtomMOOV * moov, AtomTREX * trex)
{
moov->mvex.trexs = g_list_append (moov->mvex.trexs, trex);
}
static AtomTREX *
atom_trex_new (AtomTRAK * trak)
{
guint8 flags[3] = { 0, 0, 0 };
AtomTREX *trex = g_new0 (AtomTREX, 1);
atom_full_init (&trex->header, FOURCC_trex, 0, 0, 0, flags);
trex->track_ID = trak->tkhd.track_ID;
trex->default_sample_description_index = 1;
trex->default_sample_duration = 0;
trex->default_sample_size = 0;
trex->default_sample_flags = 0;
return trex;
}
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);
/* additional trak means also new trex */
atom_moov_add_trex (moov, atom_trex_new (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;
moov->mvex.mehd.fragment_duration = duration;
}
void
atom_moov_set_fragmented (AtomMOOV * moov, gboolean fragmented)
{
moov->fragmented = fragmented;
}
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));
}
}
static void
atom_mfhd_init (AtomMFHD * mfhd, guint32 sequence_number)
{
guint8 flags[3] = { 0, 0, 0 };
atom_full_init (&(mfhd->header), FOURCC_mfhd, 0, 0, 0, flags);
mfhd->sequence_number = sequence_number;
}
static void
atom_moof_init (AtomMOOF * moof, AtomsContext * context,
guint32 sequence_number)
{
atom_header_set (&moof->header, FOURCC_moof, 0, 0);
atom_mfhd_init (&moof->mfhd, sequence_number);
moof->trafs = NULL;
}
AtomMOOF *
atom_moof_new (AtomsContext * context, guint32 sequence_number)
{
AtomMOOF *moof = g_new0 (AtomMOOF, 1);
atom_moof_init (moof, context, sequence_number);
return moof;
}
static void
atom_trun_free (AtomTRUN * trun)
{
atom_full_clear (&trun->header);
atom_array_clear (&trun->entries);
g_free (trun);
}
static void
atom_sdtp_free (AtomSDTP * sdtp)
{
atom_full_clear (&sdtp->header);
atom_array_clear (&sdtp->entries);
g_free (sdtp);
}
void
atom_traf_free (AtomTRAF * traf)
{
GList *walker;
walker = traf->truns;
while (walker) {
atom_trun_free ((AtomTRUN *) walker->data);
walker = g_list_next (walker);
}
g_list_free (traf->truns);
traf->truns = NULL;
walker = traf->sdtps;
while (walker) {
atom_sdtp_free ((AtomSDTP *) walker->data);
walker = g_list_next (walker);
}
g_list_free (traf->sdtps);
traf->sdtps = NULL;
g_free (traf);
}
void
atom_moof_free (AtomMOOF * moof)
{
GList *walker;
walker = moof->trafs;
while (walker) {
atom_traf_free ((AtomTRAF *) walker->data);
walker = g_list_next (walker);
}
g_list_free (moof->trafs);
moof->trafs = NULL;
g_free (moof);
}
static guint64
atom_mfhd_copy_data (AtomMFHD * mfhd, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
guint64 original_offset = *offset;
if (!atom_full_copy_data (&mfhd->header, buffer, size, offset)) {
return 0;
}
prop_copy_uint32 (mfhd->sequence_number, buffer, size, offset);
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
static guint64
atom_tfhd_copy_data (AtomTFHD * tfhd, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
guint64 original_offset = *offset;
guint32 flags;
if (!atom_full_copy_data (&tfhd->header, buffer, size, offset)) {
return 0;
}
prop_copy_uint32 (tfhd->track_ID, buffer, size, offset);
flags = atom_full_get_flags_as_uint (&tfhd->header);
if (flags & TF_BASE_DATA_OFFSET)
prop_copy_uint64 (tfhd->base_data_offset, buffer, size, offset);
if (flags & TF_SAMPLE_DESCRIPTION_INDEX)
prop_copy_uint32 (tfhd->sample_description_index, buffer, size, offset);
if (flags & TF_DEFAULT_SAMPLE_DURATION)
prop_copy_uint32 (tfhd->default_sample_duration, buffer, size, offset);
if (flags & TF_DEFAULT_SAMPLE_SIZE)
prop_copy_uint32 (tfhd->default_sample_size, buffer, size, offset);
if (flags & TF_DEFAULT_SAMPLE_FLAGS)
prop_copy_uint32 (tfhd->default_sample_flags, buffer, size, offset);
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
static guint64
atom_trun_copy_data (AtomTRUN * trun, guint8 ** buffer, guint64 * size,
guint64 * offset, guint32 * data_offset)
{
guint64 original_offset = *offset;
guint32 flags, i;
flags = atom_full_get_flags_as_uint (&trun->header);
/* if first trun in moof, forcibly add data_offset and record
* where it must be written later on */
if (data_offset && !*data_offset) {
flags |= TR_DATA_OFFSET;
} else {
flags &= ~TR_DATA_OFFSET;
}
atom_full_set_flags_as_uint (&trun->header, flags);
if (!atom_full_copy_data (&trun->header, buffer, size, offset)) {
return 0;
}
prop_copy_uint32 (trun->sample_count, buffer, size, offset);
if (flags & TR_DATA_OFFSET) {
*data_offset = *offset;
prop_copy_int32 (trun->data_offset, buffer, size, offset);
}
if (flags & TR_FIRST_SAMPLE_FLAGS)
prop_copy_uint32 (trun->first_sample_flags, buffer, size, offset);
for (i = 0; i < atom_array_get_len (&trun->entries); i++) {
TRUNSampleEntry *entry = &atom_array_index (&trun->entries, i);
if (flags & TR_SAMPLE_DURATION)
prop_copy_uint32 (entry->sample_duration, buffer, size, offset);
if (flags & TR_SAMPLE_SIZE)
prop_copy_uint32 (entry->sample_size, buffer, size, offset);
if (flags & TR_SAMPLE_FLAGS)
prop_copy_uint32 (entry->sample_flags, buffer, size, offset);
if (flags & TR_COMPOSITION_TIME_OFFSETS)
prop_copy_uint32 (entry->sample_composition_time_offset,
buffer, size, offset);
}
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
static guint64
atom_sdtp_copy_data (AtomSDTP * sdtp, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
guint64 original_offset = *offset;
if (!atom_full_copy_data (&sdtp->header, buffer, size, offset)) {
return 0;
}
/* all entries at once */
prop_copy_fixed_size_string (&atom_array_index (&sdtp->entries, 0),
atom_array_get_len (&sdtp->entries), buffer, size, offset);
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
static guint64
atom_traf_copy_data (AtomTRAF * traf, guint8 ** buffer, guint64 * size,
guint64 * offset, guint32 * data_offset)
{
guint64 original_offset = *offset;
GList *walker;
if (!atom_copy_data (&traf->header, buffer, size, offset)) {
return 0;
}
if (!atom_tfhd_copy_data (&traf->tfhd, buffer, size, offset)) {
return 0;
}
walker = g_list_first (traf->truns);
while (walker != NULL) {
if (!atom_trun_copy_data ((AtomTRUN *) walker->data, buffer, size, offset,
data_offset)) {
return 0;
}
walker = g_list_next (walker);
}
walker = g_list_first (traf->sdtps);
while (walker != NULL) {
if (!atom_sdtp_copy_data ((AtomSDTP *) walker->data, buffer, size, offset)) {
return 0;
}
walker = g_list_next (walker);
}
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
/* creates moof atom; metadata is written expecting actual buffer data
* is in mdata directly after moof, and is consecutively written per trak */
guint64
atom_moof_copy_data (AtomMOOF * moof, guint8 ** buffer,
guint64 * size, guint64 * offset)
{
guint64 original_offset = *offset;
GList *walker;
guint32 data_offset = 0;
if (!atom_copy_data (&moof->header, buffer, size, offset))
return 0;
if (!atom_mfhd_copy_data (&moof->mfhd, buffer, size, offset))
return 0;
walker = g_list_first (moof->trafs);
while (walker != NULL) {
if (!atom_traf_copy_data ((AtomTRAF *) walker->data, buffer, size, offset,
&data_offset)) {
return 0;
}
walker = g_list_next (walker);
}
atom_write_size (buffer, size, offset, original_offset);
if (*buffer && data_offset) {
/* first trun needs a data-offset relative to moof start
* = moof size + mdat prefix */
GST_WRITE_UINT32_BE (*buffer + data_offset, *offset - original_offset + 8);
}
return *offset - original_offset;
}
static void
atom_tfhd_init (AtomTFHD * tfhd, guint32 track_ID)
{
guint8 flags[3] = { 0, 0, 0 };
atom_full_init (&tfhd->header, FOURCC_tfhd, 0, 0, 0, flags);
tfhd->track_ID = track_ID;
tfhd->base_data_offset = 0;
tfhd->sample_description_index = 1;
tfhd->default_sample_duration = 0;
tfhd->default_sample_size = 0;
tfhd->default_sample_flags = 0;
}
static void
atom_trun_init (AtomTRUN * trun)
{
guint8 flags[3] = { 0, 0, 0 };
atom_full_init (&trun->header, FOURCC_trun, 0, 0, 0, flags);
trun->sample_count = 0;
trun->data_offset = 0;
trun->first_sample_flags = 0;
atom_array_init (&trun->entries, 512);
}
static AtomTRUN *
atom_trun_new (void)
{
AtomTRUN *trun = g_new0 (AtomTRUN, 1);
atom_trun_init (trun);
return trun;
}
static void
atom_sdtp_init (AtomSDTP * sdtp)
{
guint8 flags[3] = { 0, 0, 0 };
atom_full_init (&sdtp->header, FOURCC_sdtp, 0, 0, 0, flags);
atom_array_init (&sdtp->entries, 512);
}
static AtomSDTP *
atom_sdtp_new (AtomsContext * context)
{
AtomSDTP *sdtp = g_new0 (AtomSDTP, 1);
atom_sdtp_init (sdtp);
return sdtp;
}
static void
atom_traf_add_sdtp (AtomTRAF * traf, AtomSDTP * sdtp)
{
traf->sdtps = g_list_append (traf->sdtps, sdtp);
}
static void
atom_sdtp_add_samples (AtomSDTP * sdtp, guint8 val)
{
/* it does not make much/any sense according to specs,
* but that's how MS isml samples seem to do it */
atom_array_append (&sdtp->entries, val, 256);
}
static void
atom_trun_add_samples (AtomTRUN * trun, guint32 delta, guint32 size,
guint32 flags, gint64 pts_offset)
{
TRUNSampleEntry nentry;
if (pts_offset != 0)
trun->header.flags[1] |= TR_COMPOSITION_TIME_OFFSETS;
nentry.sample_duration = delta;
nentry.sample_size = size;
nentry.sample_flags = flags;
nentry.sample_composition_time_offset = pts_offset;
atom_array_append (&trun->entries, nentry, 256);
trun->sample_count++;
}
static void
atom_traf_init (AtomTRAF * traf, AtomsContext * context, guint32 track_ID)
{
atom_header_set (&traf->header, FOURCC_traf, 0, 0);
atom_tfhd_init (&traf->tfhd, track_ID);
traf->truns = NULL;
if (context->flavor == ATOMS_TREE_FLAVOR_ISML)
atom_traf_add_sdtp (traf, atom_sdtp_new (context));
}
AtomTRAF *
atom_traf_new (AtomsContext * context, guint32 track_ID)
{
AtomTRAF *traf = g_new0 (AtomTRAF, 1);
atom_traf_init (traf, context, track_ID);
return traf;
}
static void
atom_traf_add_trun (AtomTRAF * traf, AtomTRUN * trun)
{
traf->truns = g_list_append (traf->truns, trun);
}
void
atom_traf_add_samples (AtomTRAF * traf, guint32 delta, guint32 size,
gboolean sync, gint64 pts_offset, gboolean sdtp_sync)
{
AtomTRUN *trun;
guint32 flags;
/* 0x10000 is sample-is-difference-sample flag
* low byte stuff is what ismv uses */
flags = (sync ? 0x0 : 0x10000) | (sdtp_sync ? 0x40 : 0xc0);
if (G_UNLIKELY (!traf->truns)) {
trun = atom_trun_new ();
atom_traf_add_trun (traf, trun);
/* optimistic; indicate all defaults present in tfhd */
traf->tfhd.header.flags[2] = TF_DEFAULT_SAMPLE_DURATION |
TF_DEFAULT_SAMPLE_SIZE | TF_DEFAULT_SAMPLE_FLAGS;
traf->tfhd.default_sample_duration = delta;
traf->tfhd.default_sample_size = size;
traf->tfhd.default_sample_flags = flags;
trun->first_sample_flags = flags;
}
trun = traf->truns->data;
/* check if still matching defaults,
* if not, abandon default and need entry for each sample */
if (traf->tfhd.default_sample_duration != delta) {
traf->tfhd.header.flags[2] &= ~TF_DEFAULT_SAMPLE_DURATION;
trun->header.flags[1] |= (TR_SAMPLE_DURATION >> 8);
}
if (traf->tfhd.default_sample_size != size) {
traf->tfhd.header.flags[2] &= ~TF_DEFAULT_SAMPLE_SIZE;
trun->header.flags[1] |= (TR_SAMPLE_SIZE >> 8);
}
if (traf->tfhd.default_sample_flags != flags) {
if (trun->sample_count == 1) {
/* at least will need first sample flag */
traf->tfhd.default_sample_flags = flags;
trun->header.flags[2] |= TR_FIRST_SAMPLE_FLAGS;
} else {
/* now we need sample flags for each sample */
traf->tfhd.header.flags[2] &= ~TF_DEFAULT_SAMPLE_FLAGS;
trun->header.flags[1] |= (TR_SAMPLE_FLAGS >> 8);
trun->header.flags[2] &= ~TR_FIRST_SAMPLE_FLAGS;
}
}
atom_trun_add_samples (traf->truns->data, delta, size, flags, pts_offset);
if (traf->sdtps)
atom_sdtp_add_samples (traf->sdtps->data, 0x10 | ((flags & 0xff) >> 4));
}
guint32
atom_traf_get_sample_num (AtomTRAF * traf)
{
AtomTRUN *trun;
if (G_UNLIKELY (!traf->truns))
return 0;
trun = traf->truns->data;
return atom_array_get_len (&trun->entries);
}
void
atom_moof_add_traf (AtomMOOF * moof, AtomTRAF * traf)
{
moof->trafs = g_list_append (moof->trafs, traf);
}
static void
atom_tfra_free (AtomTFRA * tfra)
{
atom_full_clear (&tfra->header);
atom_array_clear (&tfra->entries);
g_free (tfra);
}
AtomMFRA *
atom_mfra_new (AtomsContext * context)
{
AtomMFRA *mfra = g_new0 (AtomMFRA, 1);
atom_header_set (&mfra->header, FOURCC_mfra, 0, 0);
return mfra;
}
void
atom_mfra_add_tfra (AtomMFRA * mfra, AtomTFRA * tfra)
{
mfra->tfras = g_list_append (mfra->tfras, tfra);
}
void
atom_mfra_free (AtomMFRA * mfra)
{
GList *walker;
walker = mfra->tfras;
while (walker) {
atom_tfra_free ((AtomTFRA *) walker->data);
walker = g_list_next (walker);
}
g_list_free (mfra->tfras);
mfra->tfras = NULL;
atom_clear (&mfra->header);
g_free (mfra);
}
static void
atom_tfra_init (AtomTFRA * tfra, guint32 track_ID)
{
guint8 flags[3] = { 0, 0, 0 };
atom_full_init (&tfra->header, FOURCC_tfra, 0, 0, 0, flags);
tfra->track_ID = track_ID;
atom_array_init (&tfra->entries, 512);
}
AtomTFRA *
atom_tfra_new (AtomsContext * context, guint32 track_ID)
{
AtomTFRA *tfra = g_new0 (AtomTFRA, 1);
atom_tfra_init (tfra, track_ID);
return tfra;
}
static inline gint
need_bytes (guint32 num)
{
gint n = 0;
while (num >>= 8)
n++;
return n;
}
void
atom_tfra_add_entry (AtomTFRA * tfra, guint64 dts, guint32 sample_num)
{
TFRAEntry entry;
entry.time = dts;
/* fill in later */
entry.moof_offset = 0;
/* always write a single trun in a single traf */
entry.traf_number = 1;
entry.trun_number = 1;
entry.sample_number = sample_num;
/* auto-use 64 bits if needed */
if (dts > G_MAXUINT32)
tfra->header.version = 1;
/* 1 byte will always do for traf and trun number,
* check how much sample_num needs */
tfra->lengths = (tfra->lengths & 0xfc) ||
MAX (tfra->lengths, need_bytes (sample_num));
atom_array_append (&tfra->entries, entry, 256);
}
void
atom_tfra_update_offset (AtomTFRA * tfra, guint64 offset)
{
gint i;
/* auto-use 64 bits if needed */
if (offset > G_MAXUINT32)
tfra->header.version = 1;
for (i = atom_array_get_len (&tfra->entries) - 1; i >= 0; i--) {
TFRAEntry *entry = &atom_array_index (&tfra->entries, i);
if (entry->moof_offset)
break;
entry->moof_offset = offset;
}
}
static guint64
atom_tfra_copy_data (AtomTFRA * tfra, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
guint64 original_offset = *offset;
guint32 i;
TFRAEntry *entry;
guint32 data;
guint bytes;
guint version;
if (!atom_full_copy_data (&tfra->header, buffer, size, offset)) {
return 0;
}
prop_copy_uint32 (tfra->track_ID, buffer, size, offset);
prop_copy_uint32 (tfra->lengths, buffer, size, offset);
prop_copy_uint32 (atom_array_get_len (&tfra->entries), buffer, size, offset);
version = tfra->header.version;
for (i = 0; i < atom_array_get_len (&tfra->entries); ++i) {
entry = &atom_array_index (&tfra->entries, i);
if (version) {
prop_copy_uint64 (entry->time, buffer, size, offset);
prop_copy_uint64 (entry->moof_offset, buffer, size, offset);
} else {
prop_copy_uint32 (entry->time, buffer, size, offset);
prop_copy_uint32 (entry->moof_offset, buffer, size, offset);
}
bytes = (tfra->lengths & (0x3 << 4)) + 1;
data = GUINT32_TO_BE (entry->traf_number);
prop_copy_fixed_size_string (((guint8 *) & data) + 4 - bytes, bytes,
buffer, size, offset);
bytes = (tfra->lengths & (0x3 << 2)) + 1;
data = GUINT32_TO_BE (entry->trun_number);
prop_copy_fixed_size_string (((guint8 *) & data) + 4 - bytes, bytes,
buffer, size, offset);
bytes = (tfra->lengths & (0x3)) + 1;
data = GUINT32_TO_BE (entry->sample_number);
prop_copy_fixed_size_string (((guint8 *) & data) + 4 - bytes, bytes,
buffer, size, offset);
}
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
static guint64
atom_mfro_copy_data (guint32 s, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
guint64 original_offset = *offset;
guint8 flags[3] = { 0, 0, 0 };
AtomFull mfro;
atom_full_init (&mfro, FOURCC_mfro, 0, 0, 0, flags);
if (!atom_full_copy_data (&mfro, buffer, size, offset)) {
return 0;
}
prop_copy_uint32 (s, buffer, size, offset);
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
guint64
atom_mfra_copy_data (AtomMFRA * mfra, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
guint64 original_offset = *offset;
GList *walker;
if (!atom_copy_data (&mfra->header, buffer, size, offset))
return 0;
walker = g_list_first (mfra->tfras);
while (walker != NULL) {
if (!atom_tfra_copy_data ((AtomTFRA *) walker->data, buffer, size, offset)) {
return 0;
}
walker = g_list_next (walker);
}
/* 16 is the size of the mfro atom */
if (!atom_mfro_copy_data (*offset - original_offset + 16, buffer,
size, offset))
return 0;
atom_write_size (buffer, size, offset, original_offset);
return *offset - original_offset;
}
/* 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);
}
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