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swscale/ops_dispatch: add SwsOpBackend.compile_uops()

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This can be used as an alternative to the existing compile() backend, that
takes SwsUOpList instead of SwsOpList.

Down the line, I plan on also moving the uops translation to the dispatch
layer itself, but this requires some further changes which have not yet
been merged, so this commit represents a stopgap solution.

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Niklas Haas <git@haasn.dev>
This commit is contained in:
Niklas Haas
2026-06-12 12:14:25 +02:00
committed by Niklas Haas
parent 17a9a59333
commit 33d183a473
2 changed files with 29 additions and 17 deletions
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6
libswscale/ops_dispatch.h
View File

@@ -25,6 +25,7 @@
#include "libavutil/frame.h"
#include "graph.h"
#include "uops.h"
/**
* Global execution context for all compiled functions.
@@ -141,6 +142,11 @@ typedef struct SwsOpBackend {
*/
int (*compile)(SwsContext *ctx, const SwsOpList *ops, SwsCompiledOp *out);
/**
* Alternative to `compile` that takes a list of micro-ops directly.
*/
int (*compile_uops)(SwsContext *ctx, const SwsUOpList *uops, SwsCompiledOp *out);
/**
* If NONE, backend only supports software frames.
* Otherwise, frame hardware format must match hw_format for the backend

40
libswscale/uops_backend.c
View File

@@ -135,7 +135,7 @@ static void process(const SwsOpExec *exec, const void *priv,
}
}
static int compile(SwsContext *ctx, const SwsOpList *ops, SwsCompiledOp *out)
static int compile_uops_c(SwsContext *ctx, const SwsUOpList *uops, SwsCompiledOp *out)
{
int ret;
@@ -143,16 +143,6 @@ static int compile(SwsContext *ctx, const SwsOpList *ops, SwsCompiledOp *out)
if (!chain)
return AVERROR(ENOMEM);
SwsUOpList *uops = ff_sws_uop_list_alloc();
if (!uops) {
ret = AVERROR(ENOMEM);
goto fail;
}
ret = ff_sws_ops_translate(ctx, ops, 0, uops);
if (ret < 0)
goto fail;
av_assert0(uops->num_ops > 0);
for (int i = 0; i < uops->num_ops; i++) {
const SwsUOpTable *table = &uop_table;
@@ -181,18 +171,34 @@ static int compile(SwsContext *ctx, const SwsOpList *ops, SwsCompiledOp *out)
av_log(ctx, AV_LOG_DEBUG, " %s\n", name);
}
ff_sws_uop_list_free(&uops);
return 0;
fail:
ff_sws_uop_list_free(&uops);
ff_sws_op_chain_free(chain);
return ret;
}
static int compile_c(SwsContext *ctx, const SwsOpList *ops, SwsCompiledOp *out)
{
SwsUOpList *uops = ff_sws_uop_list_alloc();
if (!uops)
return AVERROR(ENOMEM);
int ret = ff_sws_ops_translate(ctx, ops, 0, uops);
if (ret < 0)
goto fail;
ret = compile_uops_c(ctx, uops, out);
fail:
ff_sws_uop_list_free(&uops);
return ret;
}
const SwsOpBackend backend_c = {
.name = "c",
.flags = SWS_BACKEND_C,
.compile = compile,
.hw_format = AV_PIX_FMT_NONE,
.name = "c",
.flags = SWS_BACKEND_C,
.compile = compile_c,
.compile_uops = compile_uops_c,
.hw_format = AV_PIX_FMT_NONE,
};