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Fix --video-pngs where last frame may not be used

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This commit is contained in:
Stephen Seo 2021-12-06 15:20:06 +09:00
parent db2d75de06
commit 926269198e
1 changed files with 71 additions and 71 deletions
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142
src/video.cc
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@ -487,90 +487,90 @@ std::tuple<bool, std::vector<AVFrame *>> Video::HandleDecodingPacket(
if (!dithered_image->SaveAsPNG(out_name, true)) {
return {false, {}};
}
return {true, {}};
}
// convert grayscale/RGBA to YUV444p
if (sws_enc_context_ != nullptr && color_changed) {
// switched between grayscale/RGBA, context needs to be recreated
sws_freeContext(sws_enc_context_);
sws_enc_context_ = nullptr;
}
if (sws_enc_context_ == nullptr) {
sws_enc_context_ = sws_getContext(
frame->width, frame->height,
grayscale ? AVPixelFormat::AV_PIX_FMT_GRAY8
: AVPixelFormat::AV_PIX_FMT_RGBA,
frame->width, frame->height, AVPixelFormat::AV_PIX_FMT_YUV444P,
SWS_BILINEAR, nullptr, nullptr, nullptr);
if (sws_enc_context_ == nullptr) {
std::cout << "ERROR: Failed to init sws_enc_context_" << std::endl;
return {false, {}};
} else {
// convert grayscale/RGBA to YUV444p
if (sws_enc_context_ != nullptr && color_changed) {
// switched between grayscale/RGBA, context needs to be recreated
sws_freeContext(sws_enc_context_);
sws_enc_context_ = nullptr;
}
if (sws_enc_context_ == nullptr) {
sws_enc_context_ = sws_getContext(
frame->width, frame->height,
grayscale ? AVPixelFormat::AV_PIX_FMT_GRAY8
: AVPixelFormat::AV_PIX_FMT_RGBA,
frame->width, frame->height, AVPixelFormat::AV_PIX_FMT_YUV444P,
SWS_BILINEAR, nullptr, nullptr, nullptr);
if (sws_enc_context_ == nullptr) {
std::cout << "ERROR: Failed to init sws_enc_context_" << std::endl;
return {false, {}};
}
}
}
// rgba data info
if (grayscale) {
av_frame_free(&temp_frame);
temp_frame = av_frame_alloc();
temp_frame->format = AVPixelFormat::AV_PIX_FMT_GRAY8;
temp_frame->width = frame->width;
temp_frame->height = frame->height;
return_value = av_frame_get_buffer(temp_frame, 0);
if (return_value != 0) {
// rgba data info
if (grayscale) {
av_frame_free(&temp_frame);
temp_frame = av_frame_alloc();
temp_frame->format = AVPixelFormat::AV_PIX_FMT_GRAY8;
temp_frame->width = frame->width;
temp_frame->height = frame->height;
return_value = av_frame_get_buffer(temp_frame, 0);
if (return_value != 0) {
std::cout << "ERROR: Failed to init temp_frame for conversion from "
"grayscale"
<< std::endl;
av_frame_free(&temp_frame);
return {false, {}};
}
std::memcpy(temp_frame->data[0], dithered_image->data_.data(),
frame->width * frame->height);
} else {
temp_frame->format = AVPixelFormat::AV_PIX_FMT_RGBA;
temp_frame->width = frame->width;
temp_frame->height = frame->height;
return_value = av_frame_get_buffer(temp_frame, 0);
if (return_value != 0) {
std::cout
<< "ERROR: Failed to init temp_frame for conversion from RGBA"
<< std::endl;
av_frame_free(&temp_frame);
return {false, {}};
}
std::memcpy(temp_frame->data[0], dithered_image->data_.data(),
4 * frame->width * frame->height);
}
AVFrame *yuv_frame = av_frame_alloc();
if (frame == nullptr) {
std::cout
<< "ERROR: Failed to init temp_frame for conversion from grayscale"
<< "ERROR: Failed to alloc AVFrame for receiving YUV444p from RGBA"
<< std::endl;
av_frame_free(&temp_frame);
return {false, {}};
}
std::memcpy(temp_frame->data[0], dithered_image->data_.data(),
frame->width * frame->height);
} else {
temp_frame->format = AVPixelFormat::AV_PIX_FMT_RGBA;
temp_frame->width = frame->width;
temp_frame->height = frame->height;
return_value = av_frame_get_buffer(temp_frame, 0);
if (return_value != 0) {
std::cout << "ERROR: Failed to init temp_frame for conversion from RGBA"
yuv_frame->format = AVPixelFormat::AV_PIX_FMT_YUV444P;
yuv_frame->width = frame->width;
yuv_frame->height = frame->height;
return_value = av_frame_get_buffer(yuv_frame, 0);
return_value =
sws_scale(sws_enc_context_, temp_frame->data, temp_frame->linesize, 0,
frame->height, yuv_frame->data, yuv_frame->linesize);
if (return_value <= 0) {
std::cout << "ERROR: Failed to convert RGBA to YUV444p with sws_scale"
<< std::endl;
av_frame_free(&yuv_frame);
av_frame_free(&temp_frame);
return {false, {}};
}
std::memcpy(temp_frame->data[0], dithered_image->data_.data(),
4 * frame->width * frame->height);
}
AVFrame *yuv_frame = av_frame_alloc();
if (frame == nullptr) {
std::cout
<< "ERROR: Failed to alloc AVFrame for receiving YUV444p from RGBA"
<< std::endl;
// cleanup
av_frame_free(&temp_frame);
return {false, {}};
}
yuv_frame->format = AVPixelFormat::AV_PIX_FMT_YUV444P;
yuv_frame->width = frame->width;
yuv_frame->height = frame->height;
return_value = av_frame_get_buffer(yuv_frame, 0);
return_value =
sws_scale(sws_enc_context_, temp_frame->data, temp_frame->linesize, 0,
frame->height, yuv_frame->data, yuv_frame->linesize);
if (return_value <= 0) {
std::cout << "ERROR: Failed to convert RGBA to YUV444p with sws_scale"
<< std::endl;
av_frame_free(&yuv_frame);
av_frame_free(&temp_frame);
return {false, {}};
}
// cleanup
av_frame_free(&temp_frame);
yuv_frame->pts = frame_count_ - 1;
yuv_frame->pkt_duration = 1;
return_frames.push_back(yuv_frame);
}
yuv_frame->pts = frame_count_ - 1;
yuv_frame->pkt_duration = 1;
return_frames.push_back(yuv_frame);
} // else (!output_as_pngs)
} // while (return_value >= 0)
return {true, return_frames};
}