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content/media/encoder/fmp4_muxer/MP4ESDS.cpp@b8a032363ba2 (annotated)

content/media/encoder/fmp4_muxer/MP4ESDS.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 22 Jan 2015 13:21:57 +0100

branch

TOR_BUG_9701

changeset 15

b8a032363ba2

permissions

-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
michael@0	2	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0	4	* You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5
michael@0	6	#include <climits>
michael@0	7	#include "ISOControl.h"
michael@0	8	#include "ISOMediaBoxes.h"
michael@0	9	#include "MP4ESDS.h"
michael@0	10
michael@0	11	namespace mozilla {
michael@0	12
michael@0	13	nsresult
michael@0	14	MP4AudioSampleEntry::Generate(uint32_t* aBoxSize)
michael@0	15	{
michael@0	16	uint32_t box_size;
michael@0	17	nsresult rv = es->Generate(&box_size);
michael@0	18	NS_ENSURE_SUCCESS(rv, rv);
michael@0	19	size += box_size;
michael@0	20
michael@0	21	*aBoxSize = size;
michael@0	22	return NS_OK;
michael@0	23	}
michael@0	24
michael@0	25	nsresult
michael@0	26	MP4AudioSampleEntry::Write()
michael@0	27	{
michael@0	28	BoxSizeChecker checker(mControl, size);
michael@0	29	nsresult rv;
michael@0	30	rv = AudioSampleEntry::Write();
michael@0	31	NS_ENSURE_SUCCESS(rv, rv);
michael@0	32	rv = es->Write();
michael@0	33	NS_ENSURE_SUCCESS(rv, rv);
michael@0	34
michael@0	35	return NS_OK;
michael@0	36	}
michael@0	37
michael@0	38	MP4AudioSampleEntry::MP4AudioSampleEntry(ISOControl* aControl)
michael@0	39	: AudioSampleEntry(NS_LITERAL_CSTRING("mp4a"), aControl)
michael@0	40	{
michael@0	41	es = new ESDBox(aControl);
michael@0	42	MOZ_COUNT_CTOR(MP4AudioSampleEntry);
michael@0	43	}
michael@0	44
michael@0	45	MP4AudioSampleEntry::~MP4AudioSampleEntry()
michael@0	46	{
michael@0	47	MOZ_COUNT_DTOR(MP4AudioSampleEntry);
michael@0	48	}
michael@0	49
michael@0	50	nsresult
michael@0	51	ESDBox::Generate(uint32_t* aBoxSize)
michael@0	52	{
michael@0	53	uint32_t box_size;
michael@0	54	es_descriptor->Generate(&box_size);
michael@0	55	size += box_size;
michael@0	56	*aBoxSize = size;
michael@0	57	return NS_OK;
michael@0	58	}
michael@0	59
michael@0	60	nsresult
michael@0	61	ESDBox::Write()
michael@0	62	{
michael@0	63	WRITE_FULLBOX(mControl, size)
michael@0	64	es_descriptor->Write();
michael@0	65	return NS_OK;
michael@0	66	}
michael@0	67
michael@0	68	ESDBox::ESDBox(ISOControl* aControl)
michael@0	69	: FullBox(NS_LITERAL_CSTRING("esds"), 0, 0, aControl)
michael@0	70	{
michael@0	71	es_descriptor = new ES_Descriptor(aControl);
michael@0	72	MOZ_COUNT_CTOR(ESDBox);
michael@0	73	}
michael@0	74
michael@0	75	ESDBox::~ESDBox()
michael@0	76	{
michael@0	77	MOZ_COUNT_DTOR(ESDBox);
michael@0	78	}
michael@0	79
michael@0	80	nsresult
michael@0	81	ES_Descriptor::Find(const nsACString& aType,
michael@0	82	nsTArray<nsRefPtr<MuxerOperation>>& aOperations)
michael@0	83	{
michael@0	84	// ES_Descriptor is not a real ISOMediaBox, so we return nothing here.
michael@0	85	return NS_OK;
michael@0	86	}
michael@0	87
michael@0	88	nsresult
michael@0	89	ES_Descriptor::Write()
michael@0	90	{
michael@0	91	mControl->Write(tag);
michael@0	92	mControl->Write(length);
michael@0	93	mControl->Write(ES_ID);
michael@0	94	mControl->WriteBits(streamDependenceFlag.to_ulong(), streamDependenceFlag.size());
michael@0	95	mControl->WriteBits(URL_Flag.to_ulong(), URL_Flag.size());
michael@0	96	mControl->WriteBits(reserved.to_ulong(), reserved.size());
michael@0	97	mControl->WriteBits(streamPriority.to_ulong(), streamPriority.size());
michael@0	98	mControl->Write(DecodeSpecificInfo.Elements(), DecodeSpecificInfo.Length());
michael@0	99
michael@0	100	return NS_OK;
michael@0	101	}
michael@0	102
michael@0	103	nsresult
michael@0	104	ES_Descriptor::Generate(uint32_t* aBoxSize)
michael@0	105	{
michael@0	106	nsresult rv;
michael@0	107	// 14496-1 '8.3.4 DecoderConfigDescriptor'
michael@0	108	// 14496-1 '10.2.3 SL Packet Header Configuration'
michael@0	109	FragmentBuffer* frag = mControl->GetFragment(Audio_Track);
michael@0	110	rv = frag->GetCSD(DecodeSpecificInfo);
michael@0	111	NS_ENSURE_SUCCESS(rv, rv);
michael@0	112
michael@0	113	length = sizeof(ES_ID) + 1;
michael@0	114	length += DecodeSpecificInfo.Length();
michael@0	115
michael@0	116	*aBoxSize = sizeof(tag) + sizeof(length) + length;
michael@0	117	return NS_OK;
michael@0	118	}
michael@0	119
michael@0	120	ES_Descriptor::ES_Descriptor(ISOControl* aControl)
michael@0	121	: tag(ESDescrTag)
michael@0	122	, length(0)
michael@0	123	, ES_ID(0)
michael@0	124	, streamDependenceFlag(0)
michael@0	125	, URL_Flag(0)
michael@0	126	, reserved(0)
michael@0	127	, streamPriority(0)
michael@0	128	, mControl(aControl)
michael@0	129	{
michael@0	130	MOZ_COUNT_CTOR(ES_Descriptor);
michael@0	131	}
michael@0	132
michael@0	133	ES_Descriptor::~ES_Descriptor()
michael@0	134	{
michael@0	135	MOZ_COUNT_DTOR(ES_Descriptor);
michael@0	136	}
michael@0	137
michael@0	138	}