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CDImage: Handle cue sheets where pregap is in file

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This commit is contained in:
Connor McLaughlin 2019-11-10 15:01:41 +10:00
parent 68fe492130
commit 2cc5084dd1
2 changed files with 37 additions and 16 deletions
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25
src/common/cd_image.cpp
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@ -95,7 +95,7 @@ bool CDImage::Seek(const Position& pos)
u32 CDImage::Read(ReadMode read_mode, u32 sector_count, void* buffer)
{
char* buffer_ptr = static_cast<char*>(buffer);
u8* buffer_ptr = static_cast<u8*>(buffer);
u32 sectors_read = 0;
for (; sectors_read < sector_count; sectors_read++)
{
@ -105,16 +105,22 @@ u32 CDImage::Read(ReadMode read_mode, u32 sector_count, void* buffer)
break;
}
Assert(m_current_index->file);
// get raw sector
char raw_sector[RAW_SECTOR_SIZE];
u8 raw_sector[RAW_SECTOR_SIZE];
if (m_current_index->file)
{
if (std::fread(raw_sector, RAW_SECTOR_SIZE, 1, m_current_index->file) != 1)
{
Log_ErrorPrintf("Read of LBA %u failed", m_position_on_disc);
Seek(m_position_on_disc);
return false;
}
}
else
{
// This in an implicit pregap. Return silence.
std::fill(raw_sector, raw_sector + RAW_SECTOR_SIZE, u8(0));
}
switch (read_mode)
{
@ -155,15 +161,20 @@ bool CDImage::ReadRawSector(void* buffer)
return false;
}
Assert(m_current_index->file);
// get raw sector
if (m_current_index->file)
{
if (std::fread(buffer, RAW_SECTOR_SIZE, 1, m_current_index->file) != 1)
{
Log_ErrorPrintf("Read of LBA %u failed", m_position_on_disc);
Seek(m_position_on_disc);
return false;
}
}
else
{
// This in an implicit pregap. Return silence.
std::fill(static_cast<u8*>(buffer), static_cast<u8*>(buffer) + RAW_SECTOR_SIZE, u8(0));
}
m_position_on_disc++;
m_position_in_index++;

12
src/common/cd_image_cue.cpp
View file

@ -107,10 +107,12 @@ bool CDImageCueSheet::OpenAndParse(const char* filename)
// two seconds pregap for track 1 is assumed if not specified
long pregap_frames = track_get_zero_pre(track);
bool pregap_in_file = pregap_frames > 0;
if (pregap_frames < 0 && track_num == 1)
pregap_frames = 2 * FRAMES_PER_SECOND;
// create the index for the pregap
u64 file_offset = static_cast<u64>(static_cast<s64>(track_start)) * track_sector_size;
if (pregap_frames > 0)
{
Index pregap_index = {};
@ -120,6 +122,14 @@ bool CDImageCueSheet::OpenAndParse(const char* filename)
pregap_index.track_number = track_num;
pregap_index.index_number = 0;
pregap_index.is_pregap = true;
if (pregap_in_file)
{
pregap_index.file = it->second;
pregap_index.file_offset = file_offset;
pregap_index.file_sector_size = track_sector_size;
file_offset += static_cast<u64>(pregap_index.length) * track_sector_size;
}
m_indices.push_back(pregap_index);
disc_lba += pregap_index.length;
@ -137,7 +147,7 @@ bool CDImageCueSheet::OpenAndParse(const char* filename)
last_index.index_number = 1;
last_index.file = it->second;
last_index.file_sector_size = track_sector_size;
last_index.file_offset = 0;
last_index.file_offset = file_offset;
last_index.is_pregap = false;
long last_index_offset = track_start;