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Added alpha to all FFmpegReader source images, which is needed by the timeline class. Also, added alpha to the AddColor() method. Now even the background of the timeline can be transparent, along with all layers... even the bottom layer.

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This commit is contained in:
Jonathan Thomas
2012-12-04 02:21:01 -06:00
parent b75d8961b8
commit ad81fed72e
5 changed files with 13 additions and 9 deletions
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8
src/FFmpegReader.cpp
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@@ -32,7 +32,7 @@ void FFmpegReader::InitScalers()
for (int x = 0; x < num_of_rescalers; x++)
{
SwsContext *img_convert_ctx = sws_getContext(info.width, info.height, pCodecCtx->pix_fmt, info.width,
info.height, PIX_FMT_RGB24, SWS_FAST_BILINEAR, NULL, NULL, NULL);
info.height, PIX_FMT_RGBA, SWS_FAST_BILINEAR, NULL, NULL, NULL);
// Add rescaler to vector
image_rescalers.push_back(img_convert_ctx);
@@ -643,13 +643,13 @@ void FFmpegReader::ProcessVideoPacket(int requested_frame)
throw OutOfBoundsFrame("Convert Image Broke!", current_frame, video_length);
// Determine required buffer size and allocate buffer
numBytes = avpicture_get_size(PIX_FMT_RGB24, width, height);
numBytes = avpicture_get_size(PIX_FMT_RGBA, width, height);
buffer = (uint8_t *) av_malloc(numBytes * sizeof(uint8_t));
// Assign appropriate parts of buffer to image planes in pFrameRGB
// Note that pFrameRGB is an AVFrame, but AVFrame is a superset
// of AVPicture
avpicture_fill((AVPicture *) pFrameRGB, buffer, PIX_FMT_RGB24, width, height);
avpicture_fill((AVPicture *) pFrameRGB, buffer, PIX_FMT_RGBA, width, height);
// Resize / Convert to RGB
sws_scale(img_convert_ctx, my_frame->data, my_frame->linesize, 0,
@@ -661,7 +661,7 @@ void FFmpegReader::ProcessVideoPacket(int requested_frame)
f = CreateFrame(current_frame);
// Add Image data to frame
f->AddImage(width, height, "RGB", Magick::CharPixel, buffer);
f->AddImage(width, height, "RGBA", Magick::CharPixel, buffer);
#pragma omp critical (openshot_cache)
// Update working cache