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winegstreamer: Create a winegstreamer parser object in wm_reader_open_stream(). 

Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura 2021-10-25 18:52:12 -05:00 committed by Alexandre Julliard
parent c76418fbfd
commit 51b6d45503
2 changed files with 115 additions and 1 deletions
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3
dlls/winegstreamer/gst_private.h
View File

@ -125,6 +125,9 @@ struct wm_reader
CRITICAL_SECTION cs;
IStream *source_stream;
HANDLE read_thread;
bool read_thread_shutdown;
struct wg_parser *wg_parser;
const struct wm_reader_ops *ops;
};

113
dlls/winegstreamer/wm_reader.c
View File

@ -20,6 +20,68 @@
WINE_DEFAULT_DEBUG_CHANNEL(wmvcore);
static DWORD CALLBACK read_thread(void *arg)
{
struct wm_reader *reader = arg;
IStream *stream = reader->source_stream;
size_t buffer_size = 4096;
uint64_t file_size;
STATSTG stat;
void *data;
if (!(data = malloc(buffer_size)))
return 0;
IStream_Stat(stream, &stat, STATFLAG_NONAME);
file_size = stat.cbSize.QuadPart;
TRACE("Starting read thread for reader %p.\n", reader);
while (!reader->read_thread_shutdown)
{
LARGE_INTEGER stream_offset;
uint64_t offset;
ULONG ret_size;
uint32_t size;
HRESULT hr;
if (!wg_parser_get_next_read_offset(reader->wg_parser, &offset, &size))
continue;
if (offset >= file_size)
size = 0;
else if (offset + size >= file_size)
size = file_size - offset;
if (!size)
{
wg_parser_push_data(reader->wg_parser, data, 0);
continue;
}
if (!array_reserve(&data, &buffer_size, size, 1))
{
free(data);
return 0;
}
ret_size = 0;
stream_offset.QuadPart = offset;
if (SUCCEEDED(hr = IStream_Seek(stream, stream_offset, STREAM_SEEK_SET, NULL)))
hr = IStream_Read(stream, data, size, &ret_size);
if (FAILED(hr))
ERR("Failed to read %u bytes at offset %I64u, hr %#x.\n", size, offset, hr);
else if (ret_size != size)
ERR("Unexpected short read: requested %u bytes, got %u.\n", size, ret_size);
wg_parser_push_data(reader->wg_parser, SUCCEEDED(hr) ? data : NULL, ret_size);
}
free(data);
TRACE("Reader is shutting down; exiting.\n");
return 0;
}
static struct wm_reader *impl_from_IWMProfile3(IWMProfile3 *iface)
{
return CONTAINING_RECORD(iface, struct wm_reader, IWMProfile3_iface);
@ -761,13 +823,53 @@ static const IWMReaderTimecodeVtbl timecode_vtbl =
HRESULT wm_reader_open_stream(struct wm_reader *reader, IStream *stream)
{
struct wg_parser *wg_parser;
STATSTG stat;
HRESULT hr;
if (FAILED(hr = IStream_Stat(stream, &stat, STATFLAG_NONAME)))
{
ERR("Failed to stat stream, hr %#x.\n", hr);
return hr;
}
if (!(wg_parser = wg_parser_create(WG_PARSER_DECODEBIN, false)))
return E_OUTOFMEMORY;
EnterCriticalSection(&reader->cs);
reader->wg_parser = wg_parser;
IStream_AddRef(reader->source_stream = stream);
reader->read_thread_shutdown = false;
if (!(reader->read_thread = CreateThread(NULL, 0, read_thread, reader, 0, NULL)))
{
hr = E_OUTOFMEMORY;
goto out_destroy_parser;
}
if (FAILED(hr = wg_parser_connect(reader->wg_parser, stat.cbSize.QuadPart)))
{
ERR("Failed to connect parser, hr %#x.\n", hr);
goto out_shutdown_thread;
}
LeaveCriticalSection(&reader->cs);
return S_OK;
out_shutdown_thread:
reader->read_thread_shutdown = true;
WaitForSingleObject(reader->read_thread, INFINITE);
CloseHandle(reader->read_thread);
reader->read_thread = NULL;
out_destroy_parser:
wg_parser_destroy(reader->wg_parser);
reader->wg_parser = NULL;
IStream_Release(reader->source_stream);
reader->source_stream = NULL;
LeaveCriticalSection(&reader->cs);
return hr;
}
HRESULT wm_reader_close(struct wm_reader *reader)
@ -780,6 +882,15 @@ HRESULT wm_reader_close(struct wm_reader *reader)
return NS_E_INVALID_REQUEST;
}
wg_parser_disconnect(reader->wg_parser);
reader->read_thread_shutdown = true;
WaitForSingleObject(reader->read_thread, INFINITE);
CloseHandle(reader->read_thread);
reader->read_thread = NULL;
wg_parser_destroy(reader->wg_parser);
reader->wg_parser = NULL;
IStream_Release(reader->source_stream);
reader->source_stream = NULL;