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upipe_blit: support planar with alpha to semi-planar blit #1099

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Merged
merged 1 commit into from
Sep 5, 2025
+22 −3
Merged

upipe_blit: support planar with alpha to semi-planar blit #1099

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25 changes: 22 additions & 3 deletions lib/upipe-modules/upipe_blit.c
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@
#include "upipe/uref.h"
#include "upipe/ubuf.h"
#include "upipe/uref_pic_flow.h"
#include "upipe/uref_pic_flow_formats.h"
#include "upipe/uref_pic.h"
#include "upipe/ubuf_pic.h"
#include "upipe/uref_flow.h"
Expand Down Expand Up @@ -471,13 +472,31 @@ static int upipe_blit_sub_provide_flow_format(struct upipe *upipe)
UBASE_ALLOC_RETURN(chroma);
}

bool input_yuva = false;
if (alpha)
input_yuva = ubase_check(uref_pic_flow_check_yuva420p(uref)) ||
ubase_check(uref_pic_flow_check_yuva422p(uref)) ||
ubase_check(uref_pic_flow_check_yuva444p(uref));

uref_pic_flow_clear_format(uref);
uref_pic_flow_copy_format(uref, upipe_blit->flow_def);
if (input_yuva &&
ubase_check(uref_pic_flow_check_nv12(upipe_blit->flow_def)))
uref_pic_flow_set_yuva420p(uref);
else if (input_yuva &&
ubase_check(uref_pic_flow_check_nv16(upipe_blit->flow_def)))
uref_pic_flow_set_yuva422p(uref);
else if (input_yuva &&
ubase_check(uref_pic_flow_check_nv24(upipe_blit->flow_def)))
uref_pic_flow_set_yuva444p(uref);
else if (alpha) {
/* If the alpha was found add the alpha back into the flow format. */
uref_pic_flow_copy_format(uref, upipe_blit->flow_def);
uref_pic_flow_add_plane(uref, 1, 1, macropixel_size, chroma);
} else
uref_pic_flow_copy_format(uref, upipe_blit->flow_def);
uref_pic_flow_copy_full_range(uref, upipe_blit->flow_def);

/* If the alpha was found add the alpha back into the flow format. */
if (alpha) {
uref_pic_flow_add_plane(uref, 1, 1, macropixel_size, chroma);
free((void*)chroma);
}

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