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p3nicillinandClaude Opus 5.5
a08310bdc4
Surround Sound Studio (PPSA99051) opens an Ex port for IEC 61937 bursts when a clip is played. Follow the disassembly and console log in sainsaji/PS5-Audio-Passthrough-Research: ExOpen refuses modes outside mask 0x61F with 0x80260015 and opens an S16 stereo port of 256 frames at 48 kHz or 1024 frames at 192 kHz; ExConfigureOutput refuses a nonzero first argument with 0x80268009 and returns 0 for the documented modes and targets; ExClose returns 0. The host has no HDMI bitstream output, so an Ex port has no device and drops its bursts at its own rate. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
67 lines
2.8 KiB
C++
67 lines
2.8 KiB
C++
#include "prx/libc/include/general/VabiMacros.hpp"
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#include <cstdint>
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#include <cstdio>
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#include <stdexcept>
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#include <vector>
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extern "C" {
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int APS5_VABI sceAudioOutExOpen(int userId, std::uint32_t mode);
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int APS5_VABI sceAudioOutExConfigureOutput(int control, std::uint64_t flags, std::uint32_t mode, std::uint32_t target, std::uint64_t option);
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int APS5_VABI sceAudioOutExClose(int handle);
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int APS5_VABI sceAudioOutOutput(int handle, const void* ptr);
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}
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static constexpr int SYSTEM_USER = 0xFF;
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static constexpr int ERROR_EX_INVALID_MODE = static_cast<int>(0x80260015u);
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static constexpr int ERROR_EX_INVALID_CONTROL = static_cast<int>(0x80268009u);
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static bool failed = false;
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static void Require(bool condition, const char* what) {
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if (!condition) {
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std::fprintf(stderr, "failed: %s\n", what);
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failed = true;
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}
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}
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template <typename Call>
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static bool Throws(Call call) {
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try {
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call();
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} catch (const std::runtime_error&) {
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return true;
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}
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return false;
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}
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int main() {
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Require(sceAudioOutExOpen(SYSTEM_USER, 5) == ERROR_EX_INVALID_MODE, "mode 5 (Linear PCM) is refused");
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Require(sceAudioOutExOpen(SYSTEM_USER, 7) == ERROR_EX_INVALID_MODE, "mode 7 is outside mask 0x61F");
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Require(sceAudioOutExOpen(SYSTEM_USER, 11) == ERROR_EX_INVALID_MODE, "mode 11 is above 10");
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const int ac3 = sceAudioOutExOpen(SYSTEM_USER, 0);
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Require(ac3 > 0, "mode 0 opens a port");
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const std::vector<std::int16_t> burst(256 * 2, 0x1234);
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Require(sceAudioOutOutput(ac3, burst.data()) == 256, "a mode 0 port takes 256 frames");
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Require(sceAudioOutOutput(ac3, nullptr) == 256, "a mode 0 port drains");
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const int eac3 = sceAudioOutExOpen(SYSTEM_USER, 4);
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Require(eac3 > 0 && eac3 != ac3, "mode 4 opens a second port");
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const std::vector<std::int16_t> wide(1024 * 2, 0);
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Require(sceAudioOutOutput(eac3, wide.data()) == 1024, "a mode 4 port takes 1024 frames");
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Require(sceAudioOutExConfigureOutput(1, 0, 0, 1, 0) == ERROR_EX_INVALID_CONTROL, "a nonzero first argument is refused");
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Require(sceAudioOutExConfigureOutput(0, 0, 0, 1, 0) == 0, "mode 0 to HDMI");
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Require(sceAudioOutExConfigureOutput(0, 0, 0, 0xFF, 0) == 0, "mode 0 to the default target");
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Require(sceAudioOutExConfigureOutput(0, 0, 0xFF, 0xFF, 0) == 0, "the reset");
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Require(Throws([] { sceAudioOutExConfigureOutput(0, 0, 11, 1, 0); }), "an unknown mode throws");
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Require(Throws([] { sceAudioOutExConfigureOutput(0, 0, 0, 4, 0); }), "an unknown target throws");
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Require(Throws([] { sceAudioOutExConfigureOutput(0, 1, 0, 1, 0); }), "nonzero flags throw");
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Require(sceAudioOutExClose(ac3) == 0, "close the mode 0 port");
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Require(Throws([ac3] { sceAudioOutExClose(ac3); }), "a closed port throws");
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Require(sceAudioOutExClose(eac3) == 0, "close the mode 4 port");
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return failed ? 1 : 0;
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}
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