diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/small_rgba.png | bin | 0 -> 94 bytes | |||
| -rw-r--r-- | examples/wasm-png/.cargo/config.toml | 2 | ||||
| -rw-r--r-- | examples/wasm-png/Cargo.toml | 14 | ||||
| -rw-r--r-- | examples/wasm-png/src/lib.rs | 17 | ||||
| -rw-r--r-- | examples/wasm-tiny-png/.cargo/config.toml | 2 | ||||
| -rw-r--r-- | examples/wasm-tiny-png/Cargo.toml | 14 | ||||
| -rw-r--r-- | examples/wasm-tiny-png/src/lib.rs | 15 |
7 files changed, 64 insertions, 0 deletions
diff --git a/examples/small_rgba.png b/examples/small_rgba.png Binary files differnew file mode 100644 index 0000000..82e7fe9 --- /dev/null +++ b/examples/small_rgba.png diff --git a/examples/wasm-png/.cargo/config.toml b/examples/wasm-png/.cargo/config.toml new file mode 100644 index 0000000..f4e8c00 --- /dev/null +++ b/examples/wasm-png/.cargo/config.toml @@ -0,0 +1,2 @@ +[build] +target = "wasm32-unknown-unknown" diff --git a/examples/wasm-png/Cargo.toml b/examples/wasm-png/Cargo.toml new file mode 100644 index 0000000..edd3a9d --- /dev/null +++ b/examples/wasm-png/Cargo.toml @@ -0,0 +1,14 @@ +[package] +name = "wasm-png" +version = "0.1.0" +edition = "2021" + +[lib] +crate-type = ["cdylib"] + +[dependencies] +png = "0.17.10" + +[profile.release] +opt-level = "z" +lto = true diff --git a/examples/wasm-png/src/lib.rs b/examples/wasm-png/src/lib.rs new file mode 100644 index 0000000..1c3c150 --- /dev/null +++ b/examples/wasm-png/src/lib.rs @@ -0,0 +1,17 @@ +#[no_mangle] +pub unsafe fn decode_png(input: *const u8, input_len: usize, output: *mut u8, output_len: usize) -> usize { + let input = core::slice::from_raw_parts(input, input_len); + let output = core::slice::from_raw_parts_mut(output, output_len); + + let decoder = png::Decoder::new(input); + let Ok(mut reader) = decoder.read_info() else { + return 0; + }; + let required_bytes = reader.output_buffer_size(); + if output_len >= required_bytes { + if reader.next_frame(output).is_err() { + return 0; + } + } + required_bytes +} diff --git a/examples/wasm-tiny-png/.cargo/config.toml b/examples/wasm-tiny-png/.cargo/config.toml new file mode 100644 index 0000000..f4e8c00 --- /dev/null +++ b/examples/wasm-tiny-png/.cargo/config.toml @@ -0,0 +1,2 @@ +[build] +target = "wasm32-unknown-unknown" diff --git a/examples/wasm-tiny-png/Cargo.toml b/examples/wasm-tiny-png/Cargo.toml new file mode 100644 index 0000000..cbbfd03 --- /dev/null +++ b/examples/wasm-tiny-png/Cargo.toml @@ -0,0 +1,14 @@ +[package] +name = "wasm-tiny-png" +version = "0.1.0" +edition = "2021" + +[lib] +crate-type = ["cdylib"] + +[dependencies] +tiny-png = { path = "../..", default-features = false } + +[profile.release] +opt-level = "z" +lto = true diff --git a/examples/wasm-tiny-png/src/lib.rs b/examples/wasm-tiny-png/src/lib.rs new file mode 100644 index 0000000..ff553f1 --- /dev/null +++ b/examples/wasm-tiny-png/src/lib.rs @@ -0,0 +1,15 @@ +#[no_mangle] +pub unsafe fn decode_png(input: *const u8, input_len: usize, output: *mut u8, output_len: usize) -> usize { + let mut input = core::slice::from_raw_parts(input, input_len); + let output = core::slice::from_raw_parts_mut(output, output_len); + let Ok(header) = tiny_png::read_png_header(&mut input) else { + return 0; + }; + let required_bytes = header.required_bytes(); + if output_len >= required_bytes { + if tiny_png::read_png(&mut input, Some(&header), output).is_err() { + return 0; + } + } + required_bytes +} |
