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mfplat/sample: Refactor sample_CopyToBuffer().

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This commit is contained in:
Paul Gofman 2023-05-09 11:14:32 -06:00 committed by Alexandre Julliard
parent b7fe6359c8
commit ac4a2c4c75
1 changed files with 33 additions and 27 deletions
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60
dlls/mfplat/sample.c
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@ -810,36 +810,42 @@ static HRESULT WINAPI sample_CopyToBuffer(IMFSample *iface, IMFMediaBuffer *buff
dst_ptr = NULL;
dst_length = current_length = 0;
locked = SUCCEEDED(hr = IMFMediaBuffer_Lock(buffer, &dst_ptr, &dst_length, &current_length));
if (locked)
if (!locked)
goto done;
if (dst_length < total_length)
{
if (dst_length < total_length)
hr = MF_E_BUFFERTOOSMALL;
else if (dst_ptr)
{
for (i = 0; i < sample->buffer_count && SUCCEEDED(hr); ++i)
{
src_ptr = NULL;
src_max_length = current_length = 0;
if (SUCCEEDED(hr = IMFMediaBuffer_Lock(sample->buffers[i], &src_ptr, &src_max_length, &current_length)))
{
if (src_ptr)
{
if (current_length > dst_length)
hr = MF_E_BUFFERTOOSMALL;
else if (current_length)
{
memcpy(dst_ptr, src_ptr, current_length);
dst_length -= current_length;
dst_current_length += current_length;
dst_ptr += current_length;
}
}
IMFMediaBuffer_Unlock(sample->buffers[i]);
}
}
}
hr = MF_E_BUFFERTOOSMALL;
goto done;
}
if (!dst_ptr)
goto done;
for (i = 0; i < sample->buffer_count && SUCCEEDED(hr); ++i)
{
src_ptr = NULL;
src_max_length = current_length = 0;
if (FAILED(hr = IMFMediaBuffer_Lock(sample->buffers[i], &src_ptr, &src_max_length, &current_length)))
continue;
if (src_ptr)
{
if (current_length > dst_length)
hr = MF_E_BUFFERTOOSMALL;
else if (current_length)
{
memcpy(dst_ptr, src_ptr, current_length);
dst_length -= current_length;
dst_current_length += current_length;
dst_ptr += current_length;
}
}
IMFMediaBuffer_Unlock(sample->buffers[i]);
}
done:
IMFMediaBuffer_SetCurrentLength(buffer, dst_current_length);
if (locked)