ffmpeg-sidecar 0.3.3

Wrap a standalone FFmpeg binary in an intuitive Iterator interface.
Documentation 
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use crate::event::AVStream;

/// Map from the pix_fmt identifier string (e.g. `rgb24`) to the number of bits
/// per pixel (e.g. `24`). Returns `None` if the pix_fmt is unsupported/unrecognized.
///
/// Obtained from `ffmpeg -pix-fmts`.
///
/// ## Examples
///
/// ```rust
/// use ffmpeg_sidecar::pix_fmt::get_bits_per_pixel;
/// assert!(get_bits_per_pixel("rgb24") == Some(24));
/// assert!(get_bits_per_pixel("asdf") == None);
/// ```
pub fn get_bits_per_pixel(pix_fmt: &str) -> Option<u32> {
  match pix_fmt {
    "yuv420p" => Some(12),
    "yuyv422" => Some(16),
    "rgb24" => Some(24),
    "bgr24" => Some(24),
    "yuv422p" => Some(16),
    "yuv444p" => Some(24),
    "yuv410p" => Some(9),
    "yuv411p" => Some(12),
    "gray" => Some(8),
    "monow" => Some(1),
    "monob" => Some(1),
    "pal8" => Some(8),
    "yuvj420p" => Some(12),
    "yuvj422p" => Some(16),
    "yuvj444p" => Some(24),
    "uyvy422" => Some(16),
    "uyyvyy411" => Some(12),
    "bgr8" => Some(8),
    "bgr4" => Some(4),
    "rgb8" => Some(8),
    "rgb4" => Some(4),
    "nv12" => Some(12),
    "nv21" => Some(12),
    "argb" => Some(32),
    "rgba" => Some(32),
    "abgr" => Some(32),
    "bgra" => Some(32),
    "gray16be" => Some(16),
    "gray16le" => Some(16),
    "yuv440p" => Some(16),
    "yuvj440p" => Some(16),
    "yuva420p" => Some(20),
    "rgb48be" => Some(48),
    "rgb48le" => Some(48),
    "rgb565be" => Some(16),
    "rgb565le" => Some(16),
    "rgb555be" => Some(15),
    "rgb555le" => Some(15),
    "bgr565be" => Some(16),
    "bgr565le" => Some(16),
    "bgr555be" => Some(15),
    "bgr555le" => Some(15),
    "vaapi" => Some(0),
    "yuv420p16le" => Some(24),
    "yuv420p16be" => Some(24),
    "yuv422p16le" => Some(32),
    "yuv422p16be" => Some(32),
    "yuv444p16le" => Some(48),
    "yuv444p16be" => Some(48),
    "dxva2" => Some(0),
    "rgb444le" => Some(12),
    "rgb444be" => Some(12),
    "bgr444le" => Some(12),
    "bgr444be" => Some(12),
    "ya8" => Some(16),
    "bgr48be" => Some(48),
    "bgr48le" => Some(48),
    "yuv420p9be" => Some(13),
    "yuv420p9le" => Some(13),
    "yuv420p10be" => Some(15),
    "yuv420p10le" => Some(15),
    "yuv422p10be" => Some(20),
    "yuv422p10le" => Some(20),
    "yuv444p9be" => Some(27),
    "yuv444p9le" => Some(27),
    "yuv444p10be" => Some(30),
    "yuv444p10le" => Some(30),
    "yuv422p9be" => Some(18),
    "yuv422p9le" => Some(18),
    "gbrp" => Some(24),
    "gbrp9be" => Some(27),
    "gbrp9le" => Some(27),
    "gbrp10be" => Some(30),
    "gbrp10le" => Some(30),
    "gbrp16be" => Some(48),
    "gbrp16le" => Some(48),
    "yuva422p" => Some(24),
    "yuva444p" => Some(32),
    "yuva420p9be" => Some(22),
    "yuva420p9le" => Some(22),
    "yuva422p9be" => Some(27),
    "yuva422p9le" => Some(27),
    "yuva444p9be" => Some(36),
    "yuva444p9le" => Some(36),
    "yuva420p10be" => Some(25),
    "yuva420p10le" => Some(25),
    "yuva422p10be" => Some(30),
    "yuva422p10le" => Some(30),
    "yuva444p10be" => Some(40),
    "yuva444p10le" => Some(40),
    "yuva420p16be" => Some(40),
    "yuva420p16le" => Some(40),
    "yuva422p16be" => Some(48),
    "yuva422p16le" => Some(48),
    "yuva444p16be" => Some(64),
    "yuva444p16le" => Some(64),
    "vdpau" => Some(0),
    "xyz12le" => Some(36),
    "xyz12be" => Some(36),
    "nv16" => Some(16),
    "nv20le" => Some(20),
    "nv20be" => Some(20),
    "rgba64be" => Some(64),
    "rgba64le" => Some(64),
    "bgra64be" => Some(64),
    "bgra64le" => Some(64),
    "yvyu422" => Some(16),
    "ya16be" => Some(32),
    "ya16le" => Some(32),
    "gbrap" => Some(32),
    "gbrap16be" => Some(64),
    "gbrap16le" => Some(64),
    "qsv" => Some(0),
    "mmal" => Some(0),
    "d3d11va" => Some(0),
    "cuda" => Some(0),
    "0rgb" => Some(24),
    "rgb0" => Some(24),
    "0bgr" => Some(24),
    "bgr0" => Some(24),
    "yuv420p12be" => Some(18),
    "yuv420p12le" => Some(18),
    "yuv420p14be" => Some(21),
    "yuv420p14le" => Some(21),
    "yuv422p12be" => Some(24),
    "yuv422p12le" => Some(24),
    "yuv422p14be" => Some(28),
    "yuv422p14le" => Some(28),
    "yuv444p12be" => Some(36),
    "yuv444p12le" => Some(36),
    "yuv444p14be" => Some(42),
    "yuv444p14le" => Some(42),
    "gbrp12be" => Some(36),
    "gbrp12le" => Some(36),
    "gbrp14be" => Some(42),
    "gbrp14le" => Some(42),
    "yuvj411p" => Some(12),
    "bayer" => Some(3),
    "xvmc" => Some(0),
    "yuv440p10le" => Some(20),
    "yuv440p10be" => Some(20),
    "yuv440p12le" => Some(24),
    "yuv440p12be" => Some(24),
    "ayuv64le" => Some(64),
    "ayuv64be" => Some(64),
    "videotoolbox" => Some(0),
    "p010le" => Some(15),
    "p010be" => Some(15),
    "gbrap12be" => Some(48),
    "gbrap12le" => Some(48),
    "gbrap10be" => Some(40),
    "gbrap10le" => Some(40),
    "mediacodec" => Some(0),
    "gray12be" => Some(12),
    "gray12le" => Some(12),
    "gray10be" => Some(10),
    "gray10le" => Some(10),
    "p016le" => Some(24),
    "p016be" => Some(24),
    "d3d11" => Some(0),
    "gray9be" => Some(9),
    "gray9le" => Some(9),
    "gbrpf32be" => Some(96),
    "gbrpf32le" => Some(96),
    "gbrapf32be" => Some(128),
    "gbrapf32le" => Some(128),
    "drm" => Some(0),
    "opencl" => Some(0),
    "gray14be" => Some(14),
    "gray14le" => Some(14),
    "grayf32be" => Some(32),
    "grayf32le" => Some(32),
    "yuva422p12be" => Some(36),
    "yuva422p12le" => Some(36),
    "yuva444p12be" => Some(48),
    "yuva444p12le" => Some(48),
    "nv24" => Some(24),
    "nv42" => Some(24),
    "vulkan" => Some(0),
    "y210be" => Some(20),
    "y210le" => Some(20),
    "x2rgb10le" => Some(30),
    "x2rgb10be" => Some(30),
    "x2bgr10le" => Some(30),
    "x2bgr10be" => Some(30),
    "p210be" => Some(20),
    "p210le" => Some(20),
    "p410be" => Some(30),
    "p410le" => Some(30),
    "p216be" => Some(32),
    "p216le" => Some(32),
    "p416be" => Some(48),
    "p416le" => Some(48),
    "vuya" => Some(32),
    "rgbaf16be" => Some(64),
    "rgbaf16le" => Some(64),
    "vuyx" => Some(24),
    "p012le" => Some(18),
    "p012be" => Some(18),
    "y212be" => Some(24),
    "y212le" => Some(24),
    "xv30be" => Some(30),
    "xv30le" => Some(30),
    "xv36be" => Some(36),
    "xv36le" => Some(36),
    "rgbf32be" => Some(96),
    "rgbf32le" => Some(96),
    "rgbaf32be" => Some(128),
    "rgbaf32le" => Some(128),
    _ => None,
  }
}

pub fn get_bytes_per_frame(stream: &AVStream) -> Option<u32> {
  let bits_per_pixel = get_bits_per_pixel(&stream.pix_fmt)?;
  // Enforce byte-alignment, since we don't currently have buffer reads in
  // sub-byte increments.
  match bits_per_pixel % 8 {
    0 => Some(stream.width * stream.height * bits_per_pixel / 8),
    _ => None,
  }
}