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export media: settings protocol (codec/color/bit-depth/bitrate/range) end to end

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- ExportSettings: container format, video/audio codecs, size/fps/
  bitrate, bit depth (8/10 → U8/U10), SDR 709 + HDR 2020 code points,
  export range
- AppEngine::start_export_with(settings, path); real builds the
  task params via encoding_params_with_settings (codec tables gate
  each container — a non-supporting combo errors, never silently
  defaults; the one menu only offers compatible codecs)
- oak-task EncodingParams: video_bit_rate / audio_bit_rate +
  color_override_enabled + primaries/trc/space (override wins over
  the project's delivery colorspace)
- mock start_export_with (no-op fake progress)

The dialog UI rebuild (fields + container→codec→color enability
linking) follows in the next unit.
This commit is contained in:
Mike-Solar
2026-09-02 09:27:43 +08:00
parent 56af662b83
commit 499246b48e
5 changed files with 232 additions and 14 deletions
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crates/oak-task/src/export.rs
+35 -10
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@@ -105,14 +105,29 @@ pub struct EncodingParams {
/// set, [`ExportTask::export_range`] renders exactly `[in, out)` instead
/// of the whole viewer length.
pub has_custom_range: bool,
/// Custom range in point numerator (seconds rational).
/// Custom range in, rational seconds.
pub custom_range_in_num: i32,
/// Custom range in point denominator.
/// Custom range in denominator.
pub custom_range_in_den: i32,
/// Custom range out point numerator (seconds rational).
/// Custom range out, rational seconds.
pub custom_range_out_num: i32,
/// Custom range out point denominator.
/// Custom range out denominator.
pub custom_range_out_den: i32,
/// Video bit rate (bit/s; 0 = codec default).
pub video_bit_rate: i64,
/// Audio bit rate (bit/s; 0 = codec default).
pub audio_bit_rate: i64,
/// Delivery colorimetry override flags: `0` = use the project's output
/// spec (legacy), `1` = apply the `color_*` code points from the export
/// dialog (SDR 709 / HDR 2020 selection).
pub color_override_enabled: bool,
/// AVColorPrimaries (SDR 709 = 1, HDR BT.2020 = 9).
pub color_primaries: i32,
/// AVColorTransferCharacteristic (SDR 709 = 1, HDR PQ = 16).
pub color_trc: i32,
/// AVColorSpace (SDR 709 = 1, HDR BT.2020 = 9).
pub color_space: i32,
}
impl ExportTask {
@@ -164,15 +179,25 @@ impl ExportTask {
params.subtitles_enabled = self.encoding_params.subtitles_enabled as i32;
params.export_length_num = self.encoding_params.export_length_num;
params.export_length_den = self.encoding_params.export_length_den;
// Delivery colorimetry: tag the output container with the project's
params.video_bit_rate = self.encoding_params.video_bit_rate;
params.audio_bit_rate = self.encoding_params.audio_bit_rate;
// Delivery colorimetry: the EXPORT DIALOG's choice (SDR 709 8-bit /
// HDR 2020 10-bit) wins when enabled; otherwise the project's
// output colorspace (H.273 code points → mov `colr` atom / VUI).
// Limited range is the video-delivery convention; the encoder's
// RGB→YCbCr runs limited.
let (_working, spec) = self.delivery_color();
params.color_primaries = spec.gamut.av_color_primaries();
params.color_trc = spec.transfer.av_color_trc();
params.color_space = spec.gamut.av_color_space();
params.color_range = 1; // AVCOL_RANGE_MPEG (limited)
if self.encoding_params.color_override_enabled {
params.color_primaries = self.encoding_params.color_primaries;
params.color_trc = self.encoding_params.color_trc;
params.color_space = self.encoding_params.color_space;
params.color_range = 1; // AVCOL_RANGE_MPEG (limited)
} else {
let (_working, spec) = self.delivery_color();
params.color_primaries = spec.gamut.av_color_primaries();
params.color_trc = spec.transfer.av_color_trc();
params.color_space = spec.gamut.av_color_space();
params.color_range = 1; // AVCOL_RANGE_MPEG (limited)
}
params
}