— Update ffmpeg

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

submodules/ffmpeg/Sources/FFMpeg/ffmpeg-7.1/libavutil/riscv/intmath.h

@@ -0,0 +1,266 @@
+/*
+ * Copyright © 2022-2024 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
+ */
+
+#ifndef AVUTIL_RISCV_INTMATH_H
+#define AVUTIL_RISCV_INTMATH_H
+
+#include <stdint.h>
+#include <math.h>
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/riscv/cpu.h"
+
+/*
+ * The compiler is forced to sign-extend the result anyhow, so it is faster to
+ * compute it explicitly and use it.
+ */
+#define av_clip_int8 av_clip_int8_rvi
+static av_always_inline av_const int8_t av_clip_int8_rvi(int a)
+{
+    union { uint8_t u; int8_t s; } u = { .u = a };
+
+    if (a != u.s)
+        a = ((a >> 31) ^ 0x7F);
+    return a;
+}
+
+#define av_clip_int16 av_clip_int16_rvi
+static av_always_inline av_const int16_t av_clip_int16_rvi(int a)
+{
+    union { uint16_t u; int16_t s; } u = { .u = a };
+
+    if (a != u.s)
+        a = ((a >> 31) ^ 0x7FFF);
+    return a;
+}
+
+#define av_clipl_int32 av_clipl_int32_rvi
+static av_always_inline av_const int32_t av_clipl_int32_rvi(int64_t a)
+{
+    union { uint32_t u; int32_t s; } u = { .u = a };
+
+    if (a != u.s)
+        a = ((a >> 63) ^ 0x7FFFFFFF);
+    return a;
+}
+
+#define av_clip_intp2 av_clip_intp2_rvi
+static av_always_inline av_const int av_clip_intp2_rvi(int a, int p)
+{
+    const int shift = 31 - p;
+    int b = ((int)(((unsigned)a) << shift)) >> shift;
+
+    if (a != b)
+        b = (a >> 31) ^ ((1 << p) - 1);
+    return b;
+}
+
+#if defined (__riscv_f) || defined (__riscv_zfinx)
+#define av_clipf av_clipf_rvf
+static av_always_inline av_const float av_clipf_rvf(float a, float min,
+                                                    float max)
+{
+    return fminf(fmaxf(a, min), max);
+}
+#endif
+
+#if defined (__riscv_d) || defined (__riscv_zdinx)
+#define av_clipd av_clipd_rvd
+static av_always_inline av_const double av_clipd_rvd(double a, double min,
+                                                     double max)
+{
+    return fmin(fmax(a, min), max);
+}
+#endif
+
+#if defined (__GNUC__) || defined (__clang__)
+static inline av_const int ff_ctz_rv(int x)
+{
+#if HAVE_RV && !defined(__riscv_zbb)
+    if (!__builtin_constant_p(x) &&
+        __builtin_expect(ff_rv_zbb_support(), true)) {
+        int y;
+
+        __asm__ (
+            ".option push\n"
+            ".option arch, +zbb\n"
+#if __riscv_xlen >= 64
+            "ctzw    %0, %1\n"
+#else
+            "ctz     %0, %1\n"
+#endif
+            ".option pop" : "=r" (y) : "r" (x));
+        if (y > 32)
+            __builtin_unreachable();
+        return y;
+    }
+#endif
+    return __builtin_ctz(x);
+}
+#define ff_ctz ff_ctz_rv
+
+static inline av_const int ff_ctzll_rv(long long x)
+{
+#if HAVE_RV && !defined(__riscv_zbb) && __riscv_xlen == 64
+    if (!__builtin_constant_p(x) &&
+        __builtin_expect(ff_rv_zbb_support(), true)) {
+        int y;
+
+        __asm__ (
+            ".option push\n"
+            ".option arch, +zbb\n"
+            "ctz     %0, %1\n"
+            ".option pop" : "=r" (y) : "r" (x));
+        if (y > 64)
+            __builtin_unreachable();
+        return y;
+    }
+#endif
+    return __builtin_ctzll(x);
+}
+#define ff_ctzll ff_ctzll_rv
+
+static inline av_const int ff_clz_rv(int x)
+{
+#if HAVE_RV && !defined(__riscv_zbb)
+    if (!__builtin_constant_p(x) &&
+        __builtin_expect(ff_rv_zbb_support(), true)) {
+        int y;
+
+        __asm__ (
+            ".option push\n"
+            ".option arch, +zbb\n"
+#if __riscv_xlen >= 64
+            "clzw    %0, %1\n"
+#else
+            "clz     %0, %1\n"
+#endif
+            ".option pop" : "=r" (y) : "r" (x));
+        if (y > 32)
+            __builtin_unreachable();
+        return y;
+    }
+#endif
+    return __builtin_clz(x);
+}
+#define ff_clz ff_clz_rv
+
+#if __riscv_xlen == 64
+static inline av_const int ff_clzll_rv(long long x)
+{
+#if HAVE_RV && !defined(__riscv_zbb)
+    if (!__builtin_constant_p(x) &&
+        __builtin_expect(ff_rv_zbb_support(), true)) {
+        int y;
+
+        __asm__ (
+            ".option push\n"
+            ".option arch, +zbb\n"
+            "clz     %0, %1\n"
+            ".option pop" : "=r" (y) : "r" (x));
+        if (y > 64)
+            __builtin_unreachable();
+        return y;
+    }
+#endif
+    return __builtin_clzll(x);
+}
+#define ff_clz ff_clz_rv
+#endif
+
+static inline av_const int ff_log2_rv(unsigned int x)
+{
+    return 31 - ff_clz_rv(x | 1);
+}
+#define ff_log2 ff_log2_rv
+#define ff_log2_16bit ff_log2_rv
+
+static inline av_const int av_popcount_rv(unsigned int x)
+{
+#if HAVE_RV && !defined(__riscv_zbb)
+    if (!__builtin_constant_p(x) &&
+        __builtin_expect(ff_rv_zbb_support(), true)) {
+        int y;
+
+        __asm__ (
+            ".option push\n"
+            ".option arch, +zbb\n"
+#if __riscv_xlen >= 64
+            "cpopw   %0, %1\n"
+#else
+            "cpop    %0, %1\n"
+#endif
+            ".option pop" : "=r" (y) : "r" (x));
+        if (y > 32)
+            __builtin_unreachable();
+        return y;
+    }
+#endif
+    return __builtin_popcount(x);
+}
+#define av_popcount av_popcount_rv
+
+static inline av_const int av_popcount64_rv(uint64_t x)
+{
+#if HAVE_RV && !defined(__riscv_zbb) && __riscv_xlen >= 64
+    if (!__builtin_constant_p(x) &&
+        __builtin_expect(ff_rv_zbb_support(), true)) {
+        int y;
+
+        __asm__ (
+            ".option push\n"
+            ".option arch, +zbb\n"
+            "cpop    %0, %1\n"
+            ".option pop" : "=r" (y) : "r" (x));
+        if (y > 64)
+            __builtin_unreachable();
+        return y;
+    }
+#endif
+    return __builtin_popcountl(x);
+}
+#define av_popcount64 av_popcount64_rv
+
+static inline av_const int av_parity_rv(unsigned int x)
+{
+#if HAVE_RV && !defined(__riscv_zbb)
+    if (!__builtin_constant_p(x) &&
+        __builtin_expect(ff_rv_zbb_support(), true)) {
+        int y;
+
+        __asm__ (
+            ".option push\n"
+            ".option arch, +zbb\n"
+#if __riscv_xlen >= 64
+            "cpopw   %0, %1\n"
+#else
+            "cpop    %0, %1\n"
+#endif
+            ".option pop" : "=r" (y) : "r" (x));
+        return y & 1;
+    }
+#endif
+    return __builtin_parity(x);
+}
+#define av_parity av_parity_rv
+#endif
+
+#endif /* AVUTIL_RISCV_INTMATH_H */