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Mp3: Detect offset headers, reject invalid data.

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ID3 handling not really tested.  Left some error codes disabled in case
people are happily playing some custom BGM that the PSP didn't support.
This commit is contained in:
Unknown W. Brackets 2019-04-24 09:16:21 -07:00
parent e4d2712897
commit 5f82258fa1
1 changed files with 50 additions and 11 deletions
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61
Core/HLE/sceMp3.cpp
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@ -32,6 +32,7 @@ static const u32 ERROR_MP3_UNRESERVED_HANDLE = 0x80671102;
static const u32 ERROR_MP3_NO_RESOURCE_AVAIL = 0x80671201;
static const u32 ERROR_MP3_BAD_ADDR = 0x80671002;
static const u32 ERROR_MP3_BAD_SIZE = 0x80671003;
static const u32 ERROR_AVCODEC_INVALID_DATA = 0x807f00fd;
static const int AU_BUF_MIN_SIZE = 8192;
static const int PCM_BUF_MIN_SIZE = 9216;
static const size_t MP3_MAX_HANDLES = 2;
@ -344,8 +345,8 @@ static int __CalculateMp3Bitrates(int bitval, int mp3version, int mp3layer) {
}
}
static int __ParseMp3Header(AuCtx *ctx, bool *isID3) {
u32 ptr = ctx->AuBuf + ctx->AuStreamWorkareaSize();
static int ParseMp3Header(AuCtx *ctx, int offset, bool *isID3) {
u32 ptr = ctx->AuBuf + ctx->AuStreamWorkareaSize() + offset;
int header = bswap32(Memory::Read_U32(ptr));
// ID3 tag , can be seen in Hanayaka Nari Wa ga Ichizoku.
static const int ID3 = 0x49443300;
@ -361,17 +362,36 @@ static int __ParseMp3Header(AuCtx *ctx, bool *isID3) {
}
static int sceMp3Init(u32 mp3) {
INFO_LOG(ME, "sceMp3Init(%08x)", mp3);
AuCtx *ctx = getMp3Ctx(mp3);
if (!ctx) {
ERROR_LOG(ME, "%s: bad mp3 handle %08x", __FUNCTION__, mp3);
return -1;
if (mp3 >= MP3_MAX_HANDLES)
return hleLogError(ME, ERROR_MP3_INVALID_HANDLE, "invalid handle");
return hleLogError(ME, ERROR_MP3_UNRESERVED_HANDLE, "unreserved handle");
} else if (ctx->AuBuf == 0) {
return hleLogError(ME, ERROR_MP3_UNRESERVED_HANDLE, "incorrect handle type");
}
// First, let's search for the MP3 header. It can be offset by at most 1439 bytes.
bool hasID3Tag = false;
int header = 0;
for (int offset = 0; offset < 1440; ++offset) {
header = ParseMp3Header(ctx, offset, &hasID3Tag);
// If we hit valid sync bits, then we've found a header.
if (((header >> 21) & 0x0FFE) == 0x0FFE) {
// Ignore the data before that.
ctx->EatSourceBuff(offset);
break;
}
}
static const int PARSE_DELAY_MS = 500;
// Couldn't find a header after all?
if (((header >> 21) & 0x0FFE) != 0x0FFE) {
return hleDelayResult(hleLogWarning(ME, ERROR_AVCODEC_INVALID_DATA, "no header found"), "mp3 init", PARSE_DELAY_MS);
}
// Parse the Mp3 header
bool hasID3Tag = false;
int header = __ParseMp3Header(ctx, &hasID3Tag);
int layer = (header >> 17) & 0x3;
ctx->Version = ((header >> 19) & 0x3);
ctx->SamplingRate = __CalculateMp3SampleRates((header >> 10) & 0x3, ctx->Version);
@ -379,8 +399,6 @@ static int sceMp3Init(u32 mp3) {
ctx->BitRate = __CalculateMp3Bitrates((header >> 12) & 0xF, ctx->Version, layer);
ctx->freq = ctx->SamplingRate;
INFO_LOG(ME, "sceMp3Init(): channels=%i, samplerate=%iHz, bitrate=%ikbps", ctx->Channels, ctx->SamplingRate, ctx->BitRate);
// for mp3, if required freq is 48000, reset resampling Frequency to 48000 seems get better sound quality (e.g. Miku Custom BGM)
if (ctx->freq == 48000) {
ctx->decoder->SetResampleFrequency(ctx->freq);
@ -394,10 +412,31 @@ static int sceMp3Init(u32 mp3) {
ctx->EatSourceBuff(0x400);
} else {
// if no ID3 tag, we will decode from the begining of the file
// TODO: This seems wrong, since it's an init parameter?
ctx->startPos = 0;
}
return 0;
DEBUG_LOG(ME, "sceMp3Init(): channels=%i, samplerate=%iHz, bitrate=%ikbps", ctx->Channels, ctx->SamplingRate, ctx->BitRate);
if (layer != 1) {
// TODO: Should return ERROR_AVCODEC_INVALID_DATA.
WARN_LOG_REPORT(ME, "sceMp3Init: invalid data: not layer 3");
}
if (ctx->Version != 3) {
// TODO: Should return 0x80671301 (unsupported version?)
WARN_LOG_REPORT(ME, "sceMp3Init: invalid data: not MPEG v1");
}
if (ctx->BitRate == 0 || ctx->BitRate == -1) {
return hleDelayResult(hleReportError(ME, ERROR_AVCODEC_INVALID_DATA, "invalid bitrate v%d l%d rate %04x", ctx->Version, layer, (header >> 12) & 0xF), "mp3 init", PARSE_DELAY_MS);
}
if (ctx->SamplingRate == -1) {
return hleDelayResult(hleReportError(ME, ERROR_AVCODEC_INVALID_DATA, "invalid sample rate v%d l%d rate %02x", ctx->Version, layer, (header >> 10) & 0x3), "mp3 init", PARSE_DELAY_MS);
} else if (ctx->SamplingRate != 44100) {
// TODO: Should return 0x80671302 (unsupported sample rate?)
WARN_LOG_REPORT(ME, "sceMp3Init: invalid data: not 44.1kHz");
}
return hleDelayResult(hleLogSuccessI(ME, 0), "mp3 init", PARSE_DELAY_MS);
}
static int sceMp3GetLoopNum(u32 mp3) {