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patterns/mp4: Add childbox support for STBL boxes (#192)

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* find childboxes in stbl

* add implementation for SampleDescriptionBox
This commit is contained in:
klirktag
2023-11-14 00:06:50 +01:00
committed by GitHub
parent d7b0819ff0
commit 99df77baf2
1 changed files with 27 additions and 5 deletions
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32
patterns/mp4.hexpat
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@@ -157,6 +157,32 @@ struct VideoMediaHeaderBox : FullBox {
u16 opcolor[3];
};
struct SubSampleDescriptionBox {
u32 type = std::mem::read_unsigned($ + 4, 4, std::mem::Endian::Big);
match (str(type)) {
(_): UnknownBox box [[inline]];
}
} [[name(std::format("SubSampleDescriptionBox({})", box.type))]];
struct SampleDescriptionBox : FullBox {
u32 entry_count;
SubSampleDescriptionBox box[while($ < endOffset)] [[inline]];
};
struct SubSampleBoxTable {
u32 type = std::mem::read_unsigned($ + 4, 4, std::mem::Endian::Big);
match (str(type)) {
("stsd"): SampleDescriptionBox box [[inline]];
(_): UnknownBox box [[inline]];
}
} [[name(std::format("SubSampleBoxTable({})", box.type))]];
struct SampleBoxTable : BaseBox {
SubSampleBoxTable box[while($ < endOffset)] [[inline]];
};
struct SubMediaInformationBox {
u32 type = std::mem::read_unsigned($ + 4, 4, std::mem::Endian::Big);
@@ -164,6 +190,7 @@ struct SubMediaInformationBox {
("vmhd"): VideoMediaHeaderBox box [[inline]];
("hdlr"): HandlerBox box [[inline]];
("dinf"): DataInformationBox box [[inline]];
("stbl"): SampleBoxTable box [[inline]];
(_): UnknownBox box [[inline]];
}
} [[name(std::format("MediaInformationBox({})", box.type))]];
@@ -172,10 +199,6 @@ struct MediaInformationBox : BaseBox {
SubMediaInformationBox box[while($ < endOffset)] [[inline]];
};
struct SampleBoxTable : FullBox {
SubMediaInformationBox box[while($ < endOffset)] [[inline]];
};
struct MediaHeaderBox : FullBox {
if (this.version == 1) {
u64 creation_time;
@@ -199,7 +222,6 @@ struct SubMediaBox {
("mdhd"): MediaHeaderBox box [[inline]];
("hdlr"): HandlerBox box [[inline]];
("minf"): MediaInformationBox box [[inline]];
("sbtl"): SampleBoxTable box [[inline]];
(_): UnknownBox box [[inline]];
}
} [[name(std::format("MediaBox({})", box.type))]];