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LibVideo/VP9: Return Corrupted error when tile range decoder init fails

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Previously, we were incorrectly wrapping an error from `BooleanDecoder`
initialization in a `DecoderErrorCategory::Memory` error. This caused
an incorrect error message in VideoPlayer. Now it will instead return
`DecoderErrorCategory::Corrupted`.
This commit is contained in:
Zaggy1024 2023-02-14 04:27:48 -06:00 committed by Jelle Raaijmakers
parent b6deb8fd42
commit 8ce4245214
Notes: sideshowbarker 2024-07-17 01:46:00 +09:00 
Author: https://github.com/Zaggy1024
Commit: https://github.com/SerenityOS/serenity/commit/8ce4245214
Pull-request: https://github.com/SerenityOS/serenity/pull/18298
Reviewed-by: https://github.com/caoimhebyrne
Reviewed-by: https://github.com/gmta
2 changed files with 8 additions and 7 deletions
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13
Userland/Libraries/LibVideo/VP9/Context.h
View file

@ -14,6 +14,7 @@
#include <AK/MemoryStream.h>
#include <LibGfx/Size.h>
#include <LibVideo/Color/CodingIndependentCodePoints.h>
#include <LibVideo/DecoderError.h>
#include "BooleanDecoder.h"
#include "ContextStorage.h"
@ -187,14 +188,14 @@ static NonZeroTokensView create_non_zero_tokens_view(NonZeroTokens& non_zero_tok
struct TileContext {
public:
static ErrorOr<TileContext> try_create(FrameContext& frame_context, u32 tile_size, u32 rows_start, u32 rows_end, u32 columns_start, u32 columns_end, PartitionContextView above_partition_context, NonZeroTokensView above_non_zero_tokens, SegmentationPredictionContextView above_segmentation_ids)
static DecoderErrorOr<TileContext> try_create(FrameContext& frame_context, u32 tile_size, u32 rows_start, u32 rows_end, u32 columns_start, u32 columns_end, PartitionContextView above_partition_context, NonZeroTokensView above_non_zero_tokens, SegmentationPredictionContextView above_segmentation_ids)
{
auto width = columns_end - columns_start;
auto height = rows_end - rows_start;
auto context_view = frame_context.m_block_contexts.view(rows_start, columns_start, height, width);
auto bit_stream = TRY(try_make<BigEndianInputBitStream>(TRY(try_make<FixedMemoryStream>(frame_context.stream))));
auto decoder = TRY(BooleanDecoder::initialize(move(bit_stream), tile_size));
auto bit_stream = DECODER_TRY_ALLOC(try_make<BigEndianInputBitStream>(DECODER_TRY_ALLOC(try_make<FixedMemoryStream>(frame_context.stream))));
auto decoder = DECODER_TRY(DecoderErrorCategory::Corrupted, BooleanDecoder::initialize(move(bit_stream), tile_size));
return TileContext {
frame_context,
@ -207,9 +208,9 @@ public:
above_partition_context,
above_non_zero_tokens,
above_segmentation_ids,
TRY(PartitionContext::create(superblocks_to_blocks(blocks_ceiled_to_superblocks(height)))),
TRY(create_non_zero_tokens(blocks_to_sub_blocks(height), frame_context.color_config.subsampling_y)),
TRY(SegmentationPredictionContext::create(height)),
DECODER_TRY_ALLOC(PartitionContext::create(superblocks_to_blocks(blocks_ceiled_to_superblocks(height)))),
DECODER_TRY_ALLOC(create_non_zero_tokens(blocks_to_sub_blocks(height), frame_context.color_config.subsampling_y)),
DECODER_TRY_ALLOC(SegmentationPredictionContext::create(height)),
};
}

2
Userland/Libraries/LibVideo/VP9/Parser.cpp
View file

@ -888,7 +888,7 @@ DecoderErrorOr<void> Parser::decode_tiles(FrameContext& frame_context)
auto above_non_zero_tokens_view = create_non_zero_tokens_view(above_non_zero_tokens, blocks_to_sub_blocks(columns_start), blocks_to_sub_blocks(columns_end - columns_start), frame_context.color_config.subsampling_x);
auto above_segmentation_ids_for_tile = safe_slice(above_segmentation_ids.span(), columns_start, columns_end - columns_start);
auto tile_context = DECODER_TRY_ALLOC(TileContext::try_create(frame_context, tile_size, rows_start, rows_end, columns_start, columns_end, above_partition_context_for_tile, above_non_zero_tokens_view, above_segmentation_ids_for_tile));
auto tile_context = TRY(TileContext::try_create(frame_context, tile_size, rows_start, rows_end, columns_start, columns_end, above_partition_context_for_tile, above_non_zero_tokens_view, above_segmentation_ids_for_tile));
TRY(decode_tile(tile_context));
TRY_READ(frame_context.bit_stream.discard(tile_size));
}