— Update ffmpeg

— Refactor ffmpeg usage to modern APIs
— Update media encoding and decoding

submodules/ffmpeg/Sources/FFMpeg/ffmpeg-7.1/libavcodec/riscv/fmtconvert_init.c

@@ -0,0 +1,44 @@
+/*
+ * Copyright © 2022 Rémi Denis-Courmont.
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavcodec/fmtconvert.h"
+
+void ff_int32_to_float_fmul_scalar_rvv(float *dst, const int32_t *src,
+                                       float mul, int len);
+void ff_int32_to_float_fmul_array8_rvv(FmtConvertContext *c, float *dst,
+                                       const int32_t *src, const float *mul,
+                                       int len);
+
+av_cold void ff_fmt_convert_init_riscv(FmtConvertContext *c)
+{
+#if HAVE_RVV
+    int flags = av_get_cpu_flags();
+
+    if ((flags & AV_CPU_FLAG_RVV_F32) && (flags & AV_CPU_FLAG_RVB)) {
+        c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_rvv;
+        c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_rvv;
+    }
+#endif
+}