Enum png::decoder::stream::State

enum State {
    U32 {
        kind: U32ValueKind,
        bytes: [u8; 4],
        accumulated_count: usize,
    },
    ReadChunkData(ChunkType),
    ParseChunkData(ChunkType),
    ImageData(ChunkType),
}

Variants

U32

Fields

kind: U32ValueKind

bytes: [u8; 4]

accumulated_count: usize

In this state we are reading a u32 value from external input. We start with accumulated_count set to 0. After reading or accumulating the required 4 bytes we will call parse_32 which will then move onto the next state.

ReadChunkData(ChunkType)

In this state we are reading chunk data from external input, and appending it to ChunkState::raw_bytes.

ParseChunkData(ChunkType)

In this state we check if all chunk data has been already read into ChunkState::raw_bytes and if so then we parse the chunk. Otherwise, we go back to the ReadChunkData state.

ImageData(ChunkType)

In this state we are reading image data from external input and feeding it directly into StreamingDecoder::inflater.

Implementations

impl State

fn new_u32(kind: U32ValueKind) -> Self

Trait Implementations

impl Debug for State

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.