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vulkan_decode: align images to the subsampling

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Normally, the Vulkan drivers handle this. But Vulkan decided "nah".

This requires API users to crop out odd-numbered images with subsampling.
This commit is contained in:
Lynne
2025-10-16 03:11:32 +02:00
parent 964e9cc63b
commit 3cd678506c
1 changed files with 5 additions and 4 deletions
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9
libavcodec/vulkan_decode.c
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@@ -1140,8 +1140,9 @@ int ff_vk_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
}
}
frames_ctx->width = avctx->coded_width;
frames_ctx->height = avctx->coded_height;
const AVPixFmtDescriptor *pdesc = av_pix_fmt_desc_get(frames_ctx->sw_format);
frames_ctx->width = FFALIGN(avctx->coded_width, 1 << pdesc->log2_chroma_w);
frames_ctx->height = FFALIGN(avctx->coded_height, 1 << pdesc->log2_chroma_h);
frames_ctx->format = AV_PIX_FMT_VULKAN;
hwfc->format[0] = vkfmt;
@@ -1348,8 +1349,8 @@ int ff_vk_decode_init(AVCodecContext *avctx)
dpb_frames = (AVHWFramesContext *)ctx->common.dpb_hwfc_ref->data;
dpb_frames->format = s->frames->format;
dpb_frames->sw_format = s->frames->sw_format;
dpb_frames->width = avctx->coded_width;
dpb_frames->height = avctx->coded_height;
dpb_frames->width = s->frames->width;
dpb_frames->height = s->frames->height;
dpb_hwfc = dpb_frames->hwctx;
dpb_hwfc->create_pnext = (void *)ff_vk_find_struct(ctx->s.hwfc->create_pnext,