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Reland "Add IvfVideoFrameGenerator"

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This is a reland of 712a26f3842b4eba1f38c3ba7371b1cf771fd232

Original change's description:
> Add IvfVideoFrameGenerator
> 
> Bug: webrtc:10138
> Change-Id: Iea590f334d22fb7d22077c9bdd3b5ba79691df2e
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/160185
> Commit-Queue: Artem Titov <titovartem@webrtc.org>
> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#29902}

Bug: webrtc:10138
Change-Id: If522d079f0a1e30d6f2b330792aa1d1fc043b8b8
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/160418
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29913}
This commit is contained in:
Artem Titov
2019-11-25 23:19:42 +01:00
committed by Commit Bot
parent d5e2f215d6
commit a101a4f186
6 changed files with 472 additions and 0 deletions
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6
modules/video_coding/utility/ivf_file_reader.cc
View File

@ -122,6 +122,8 @@ absl::optional<EncodedImage> IvfFileReader::NextFrame() {
// is missing it means there is a bug in error handling.
RTC_DCHECK(next_frame_header_);
int64_t current_timestamp = next_frame_header_->timestamp;
// The first frame from the file should be marked as Key frame.
bool is_first_frame = num_read_frames_ == 0;
while (next_frame_header_ &&
current_timestamp == next_frame_header_->timestamp) {
// Resize payload to fit next spatial layer.
@ -165,6 +167,10 @@ absl::optional<EncodedImage> IvfFileReader::NextFrame() {
for (size_t i = 0; i < layer_sizes.size(); ++i) {
image.SetSpatialLayerFrameSize(static_cast<int>(i), layer_sizes[i]);
}
if (is_first_frame) {
image._frameType = VideoFrameType::kVideoFrameKey;
}
image._completeFrame = true;
return image;
}

3
modules/video_coding/utility/ivf_file_reader.h
View File

@ -40,6 +40,9 @@ class IvfFileReader {
bool HasMoreFrames() const { return num_read_frames_ < num_frames_; }
bool HasError() const { return has_error_; }
uint16_t GetFrameWidth() const { return width_; }
uint16_t GetFrameHeight() const { return height_; }
bool Close();
private: