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Parameterizes PNG target dimensions

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This commit is contained in:
Frank Leon Rose 2020-01-27 15:09:17 -05:00
commit 575e6b0a42
1 changed files with 10 additions and 9 deletions
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19
app/src/capture.c
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@ -81,22 +81,23 @@ static void notify_complete() {
static bool in_frame_to_png( static bool in_frame_to_png(
AVIOContext *output_context, AVIOContext *output_context,
AVCodecContext *codecCtx, AVFrame *inframe) { AVCodecContext *codecCtx, AVFrame *inframe) {
int targetHeight = codecCtx->height;
int targetWidth = codecCtx->width;
struct SwsContext * swCtx = sws_getContext(codecCtx->width, struct SwsContext * swCtx = sws_getContext(codecCtx->width,
codecCtx->height, codecCtx->height,
codecCtx->pix_fmt, codecCtx->pix_fmt,
codecCtx->width, targetWidth,
codecCtx->height, targetHeight,
AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB24,
SWS_FAST_BILINEAR, 0, 0, 0); SWS_FAST_BILINEAR, 0, 0, 0);
AVFrame * rgbFrame = av_frame_alloc(); AVFrame * rgbFrame = av_frame_alloc();
LOGV("Image frame width: %d height: %d", codecCtx->width, codecCtx->height); LOGV("Image frame width: %d height: %d scaling to %d x %d", codecCtx->width, codecCtx->height, targetWidth, targetHeight);
rgbFrame->width = codecCtx->width; rgbFrame->width = targetWidth;
rgbFrame->height = codecCtx->height; rgbFrame->height = targetHeight;
rgbFrame->format = AV_PIX_FMT_RGB24; rgbFrame->format = AV_PIX_FMT_RGB24;
av_image_alloc( av_image_alloc(
rgbFrame->data, rgbFrame->linesize, codecCtx->width, rgbFrame->data, rgbFrame->linesize, targetWidth, targetHeight, AV_PIX_FMT_RGB24, 1);
codecCtx->height, AV_PIX_FMT_RGB24, 1);
sws_scale( sws_scale(
swCtx, inframe->data, inframe->linesize, 0, swCtx, inframe->data, inframe->linesize, 0,
inframe->height, rgbFrame->data, rgbFrame->linesize); inframe->height, rgbFrame->data, rgbFrame->linesize);
@ -112,8 +113,8 @@ static bool in_frame_to_png(
return false; return false;
} }
outCodecCtx->width = codecCtx->width; outCodecCtx->width = targetWidth;
outCodecCtx->height = codecCtx->height; outCodecCtx->height = targetHeight;
outCodecCtx->pix_fmt = AV_PIX_FMT_RGB24; outCodecCtx->pix_fmt = AV_PIX_FMT_RGB24;
outCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO; outCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
if (codecCtx->time_base.num && codecCtx->time_base.num) { if (codecCtx->time_base.num && codecCtx->time_base.num) {