447 lines
14 KiB
C
447 lines
14 KiB
C
/*
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* DirectShow transform filters
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*
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* Copyright 2022 Anton Baskanov
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "gst_private.h"
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#include "mferror.h"
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WINE_DEFAULT_DEBUG_CHANNEL(quartz);
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WINE_DECLARE_DEBUG_CHANNEL(winediag);
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struct transform
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{
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struct strmbase_filter filter;
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struct strmbase_sink sink;
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struct strmbase_source source;
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struct wg_transform *transform;
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const struct transform_ops *ops;
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};
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struct transform_ops
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{
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HRESULT (*sink_query_accept)(struct transform *filter, const AM_MEDIA_TYPE *mt);
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HRESULT (*source_query_accept)(struct transform *filter, const AM_MEDIA_TYPE *mt);
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HRESULT (*source_get_media_type)(struct transform *filter, unsigned int index, AM_MEDIA_TYPE *mt);
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HRESULT (*source_decide_buffer_size)(struct transform *filter, IMemAllocator *allocator, ALLOCATOR_PROPERTIES *props);
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};
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static inline struct transform *impl_from_strmbase_filter(struct strmbase_filter *iface)
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{
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return CONTAINING_RECORD(iface, struct transform, filter);
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}
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static struct strmbase_pin *transform_get_pin(struct strmbase_filter *iface, unsigned int index)
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{
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struct transform *filter = impl_from_strmbase_filter(iface);
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if (index == 0)
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return &filter->sink.pin;
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if (index == 1)
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return &filter->source.pin;
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return NULL;
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}
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static void transform_destroy(struct strmbase_filter *iface)
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{
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struct transform *filter = impl_from_strmbase_filter(iface);
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strmbase_source_cleanup(&filter->source);
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strmbase_sink_cleanup(&filter->sink);
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strmbase_filter_cleanup(&filter->filter);
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free(filter);
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}
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static HRESULT transform_init_stream(struct strmbase_filter *iface)
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{
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struct transform *filter = impl_from_strmbase_filter(iface);
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struct wg_format input_format, output_format;
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HRESULT hr;
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if (filter->source.pin.peer)
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{
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if (!amt_to_wg_format(&filter->sink.pin.mt, &input_format))
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return E_FAIL;
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if (!amt_to_wg_format(&filter->source.pin.mt, &output_format))
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return E_FAIL;
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filter->transform = wg_transform_create(&input_format, &output_format);
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if (!filter->transform)
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return E_FAIL;
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hr = IMemAllocator_Commit(filter->source.pAllocator);
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if (FAILED(hr))
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ERR("Failed to commit allocator, hr %#lx.\n", hr);
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}
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return S_OK;
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}
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static HRESULT transform_cleanup_stream(struct strmbase_filter *iface)
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{
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struct transform *filter = impl_from_strmbase_filter(iface);
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if (filter->source.pin.peer)
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{
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IMemAllocator_Decommit(filter->source.pAllocator);
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wg_transform_destroy(filter->transform);
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}
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return S_OK;
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}
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static const struct strmbase_filter_ops filter_ops =
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{
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.filter_get_pin = transform_get_pin,
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.filter_destroy = transform_destroy,
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.filter_init_stream = transform_init_stream,
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.filter_cleanup_stream = transform_cleanup_stream,
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};
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static HRESULT transform_sink_query_accept(struct strmbase_pin *pin, const AM_MEDIA_TYPE *mt)
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{
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struct transform *filter = impl_from_strmbase_filter(pin->filter);
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return filter->ops->sink_query_accept(filter, mt);
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}
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static HRESULT transform_sink_query_interface(struct strmbase_pin *pin, REFIID iid, void **out)
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{
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struct transform *filter = impl_from_strmbase_filter(pin->filter);
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if (IsEqualGUID(iid, &IID_IMemInputPin))
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*out = &filter->sink.IMemInputPin_iface;
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else
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return E_NOINTERFACE;
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IUnknown_AddRef((IUnknown *)*out);
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return S_OK;
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}
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static HRESULT WINAPI transform_sink_receive(struct strmbase_sink *pin, IMediaSample *sample)
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{
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struct transform *filter = impl_from_strmbase_filter(pin->pin.filter);
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struct wg_sample input_wg_sample = {0};
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HRESULT hr;
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/* We do not expect pin connection state to change while the filter is
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* running. This guarantee is necessary, since otherwise we would have to
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* take the filter lock, and we can't take the filter lock from a streaming
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* thread. */
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if (!filter->source.pMemInputPin)
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{
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WARN("Source is not connected, returning VFW_E_NOT_CONNECTED.\n");
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return VFW_E_NOT_CONNECTED;
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}
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if (filter->filter.state == State_Stopped)
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return VFW_E_WRONG_STATE;
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if (filter->sink.flushing)
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return S_FALSE;
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input_wg_sample.max_size = IMediaSample_GetSize(sample);
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input_wg_sample.size = IMediaSample_GetActualDataLength(sample);
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hr = IMediaSample_GetPointer(sample, &input_wg_sample.data);
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if (FAILED(hr))
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return hr;
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hr = wg_transform_push_data(filter->transform, &input_wg_sample);
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if (FAILED(hr))
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return hr;
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for (;;)
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{
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struct wg_sample output_wg_sample = {0};
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IMediaSample *output_sample;
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hr = IMemAllocator_GetBuffer(filter->source.pAllocator, &output_sample, NULL, NULL, 0);
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if (FAILED(hr))
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return hr;
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output_wg_sample.max_size = IMediaSample_GetSize(output_sample);
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hr = IMediaSample_GetPointer(output_sample, &output_wg_sample.data);
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if (FAILED(hr))
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{
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IMediaSample_Release(output_sample);
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return hr;
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}
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hr = wg_transform_read_data(filter->transform, &output_wg_sample);
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if (hr == MF_E_TRANSFORM_NEED_MORE_INPUT)
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{
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IMediaSample_Release(output_sample);
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break;
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}
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if (FAILED(hr))
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{
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IMediaSample_Release(output_sample);
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return hr;
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}
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hr = IMediaSample_SetActualDataLength(output_sample, output_wg_sample.size);
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if (FAILED(hr))
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{
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IMediaSample_Release(output_sample);
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return hr;
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}
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hr = IMemInputPin_Receive(filter->source.pMemInputPin, output_sample);
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if (FAILED(hr))
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{
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IMediaSample_Release(output_sample);
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return hr;
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}
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IMediaSample_Release(output_sample);
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}
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return S_OK;
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}
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static const struct strmbase_sink_ops sink_ops =
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{
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.base.pin_query_accept = transform_sink_query_accept,
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.base.pin_query_interface = transform_sink_query_interface,
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.pfnReceive = transform_sink_receive,
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};
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static HRESULT transform_source_query_accept(struct strmbase_pin *pin, const AM_MEDIA_TYPE *mt)
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{
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struct transform *filter = impl_from_strmbase_filter(pin->filter);
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return filter->ops->source_query_accept(filter, mt);
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}
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static HRESULT transform_source_get_media_type(struct strmbase_pin *pin, unsigned int index, AM_MEDIA_TYPE *mt)
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{
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struct transform *filter = impl_from_strmbase_filter(pin->filter);
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return filter->ops->source_get_media_type(filter, index, mt);
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}
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static HRESULT WINAPI transform_source_DecideBufferSize(struct strmbase_source *pin, IMemAllocator *allocator, ALLOCATOR_PROPERTIES *props)
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{
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struct transform *filter = impl_from_strmbase_filter(pin->pin.filter);
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return filter->ops->source_decide_buffer_size(filter, allocator, props);
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}
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static const struct strmbase_source_ops source_ops =
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{
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.base.pin_query_accept = transform_source_query_accept,
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.base.pin_get_media_type = transform_source_get_media_type,
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.pfnAttemptConnection = BaseOutputPinImpl_AttemptConnection,
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.pfnDecideAllocator = BaseOutputPinImpl_DecideAllocator,
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.pfnDecideBufferSize = transform_source_DecideBufferSize,
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};
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static HRESULT transform_create(IUnknown *outer, const CLSID *clsid, const struct transform_ops *ops, struct transform **out)
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{
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struct transform *object;
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object = calloc(1, sizeof(*object));
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if (!object)
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return E_OUTOFMEMORY;
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strmbase_filter_init(&object->filter, outer, clsid, &filter_ops);
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strmbase_sink_init(&object->sink, &object->filter, L"In", &sink_ops, NULL);
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strmbase_source_init(&object->source, &object->filter, L"Out", &source_ops);
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object->ops = ops;
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*out = object;
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return S_OK;
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}
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static HRESULT mpeg_audio_codec_sink_query_accept(struct transform *filter, const AM_MEDIA_TYPE *mt)
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{
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const MPEG1WAVEFORMAT *format;
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if (!IsEqualGUID(&mt->majortype, &MEDIATYPE_Audio))
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return S_FALSE;
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if (!IsEqualGUID(&mt->subtype, &MEDIASUBTYPE_MPEG1Packet)
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&& !IsEqualGUID(&mt->subtype, &MEDIASUBTYPE_MPEG1Payload)
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&& !IsEqualGUID(&mt->subtype, &MEDIASUBTYPE_MPEG1AudioPayload)
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&& !IsEqualGUID(&mt->subtype, &GUID_NULL))
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return S_FALSE;
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if (!IsEqualGUID(&mt->formattype, &FORMAT_WaveFormatEx)
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|| mt->cbFormat < sizeof(MPEG1WAVEFORMAT))
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return S_FALSE;
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format = (const MPEG1WAVEFORMAT *)mt->pbFormat;
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if (format->wfx.wFormatTag != WAVE_FORMAT_MPEG
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|| format->fwHeadLayer == ACM_MPEG_LAYER3)
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return S_FALSE;
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return S_OK;
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}
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static HRESULT mpeg_audio_codec_source_query_accept(struct transform *filter, const AM_MEDIA_TYPE *mt)
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{
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const MPEG1WAVEFORMAT *input_format;
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const WAVEFORMATEX *output_format;
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DWORD expected_avg_bytes_per_sec;
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WORD expected_block_align;
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if (!filter->sink.pin.peer)
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return S_FALSE;
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if (!IsEqualGUID(&mt->majortype, &MEDIATYPE_Audio)
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|| !IsEqualGUID(&mt->subtype, &MEDIASUBTYPE_PCM)
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|| !IsEqualGUID(&mt->formattype, &FORMAT_WaveFormatEx)
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|| mt->cbFormat < sizeof(WAVEFORMATEX))
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return S_FALSE;
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input_format = (const MPEG1WAVEFORMAT *)filter->sink.pin.mt.pbFormat;
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output_format = (const WAVEFORMATEX *)mt->pbFormat;
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if (output_format->wFormatTag != WAVE_FORMAT_PCM
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|| input_format->wfx.nSamplesPerSec != output_format->nSamplesPerSec
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|| input_format->wfx.nChannels != output_format->nChannels
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|| (output_format->wBitsPerSample != 8 && output_format->wBitsPerSample != 16))
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return S_FALSE;
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expected_block_align = output_format->nChannels * output_format->wBitsPerSample / 8;
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expected_avg_bytes_per_sec = expected_block_align * output_format->nSamplesPerSec;
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if (output_format->nBlockAlign != expected_block_align
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|| output_format->nAvgBytesPerSec != expected_avg_bytes_per_sec)
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return S_FALSE;
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return S_OK;
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}
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static HRESULT mpeg_audio_codec_source_get_media_type(struct transform *filter, unsigned int index, AM_MEDIA_TYPE *mt)
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{
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const MPEG1WAVEFORMAT *input_format;
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WAVEFORMATEX *output_format;
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if (!filter->sink.pin.peer)
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return VFW_S_NO_MORE_ITEMS;
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if (index > 1)
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return VFW_S_NO_MORE_ITEMS;
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input_format = (const MPEG1WAVEFORMAT *)filter->sink.pin.mt.pbFormat;
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output_format = CoTaskMemAlloc(sizeof(*output_format));
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if (!output_format)
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return E_OUTOFMEMORY;
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memset(output_format, 0, sizeof(*output_format));
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output_format->wFormatTag = WAVE_FORMAT_PCM;
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output_format->nSamplesPerSec = input_format->wfx.nSamplesPerSec;
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output_format->nChannels = input_format->wfx.nChannels;
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output_format->wBitsPerSample = index ? 8 : 16;
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output_format->nBlockAlign = output_format->nChannels * output_format->wBitsPerSample / 8;
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output_format->nAvgBytesPerSec = output_format->nBlockAlign * output_format->nSamplesPerSec;
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memset(mt, 0, sizeof(*mt));
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mt->majortype = MEDIATYPE_Audio;
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mt->subtype = MEDIASUBTYPE_PCM;
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mt->bFixedSizeSamples = TRUE;
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mt->lSampleSize = output_format->nBlockAlign;
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mt->formattype = FORMAT_WaveFormatEx;
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mt->cbFormat = sizeof(*output_format);
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mt->pbFormat = (BYTE *)output_format;
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return S_OK;
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}
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static HRESULT mpeg_audio_codec_source_decide_buffer_size(struct transform *filter, IMemAllocator *allocator, ALLOCATOR_PROPERTIES *props)
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{
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MPEG1WAVEFORMAT *input_format = (MPEG1WAVEFORMAT *)filter->sink.pin.mt.pbFormat;
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WAVEFORMATEX *output_format = (WAVEFORMATEX *)filter->source.pin.mt.pbFormat;
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LONG frame_samples = (input_format->fwHeadLayer & ACM_MPEG_LAYER2) ? 1152 : 384;
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LONG frame_size = frame_samples * output_format->nBlockAlign;
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ALLOCATOR_PROPERTIES ret_props;
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props->cBuffers = max(props->cBuffers, 8);
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props->cbBuffer = max(props->cbBuffer, frame_size * 4);
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props->cbAlign = max(props->cbAlign, 1);
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return IMemAllocator_SetProperties(allocator, props, &ret_props);
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}
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static const struct transform_ops mpeg_audio_codec_transform_ops =
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{
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mpeg_audio_codec_sink_query_accept,
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mpeg_audio_codec_source_query_accept,
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mpeg_audio_codec_source_get_media_type,
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mpeg_audio_codec_source_decide_buffer_size,
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};
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HRESULT mpeg_audio_codec_create(IUnknown *outer, IUnknown **out)
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{
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static const struct wg_format output_format =
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{
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.major_type = WG_MAJOR_TYPE_AUDIO,
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.u.audio =
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{
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.format = WG_AUDIO_FORMAT_S16LE,
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.channel_mask = 1,
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.channels = 1,
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.rate = 44100,
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},
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};
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static const struct wg_format input_format =
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{
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.major_type = WG_MAJOR_TYPE_MPEG1_AUDIO,
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.u.mpeg1_audio =
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{
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.layer = 2,
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.channels = 1,
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.rate = 44100,
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},
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};
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struct wg_transform *transform;
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struct transform *object;
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HRESULT hr;
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transform = wg_transform_create(&input_format, &output_format);
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if (!transform)
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{
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ERR_(winediag)("GStreamer doesn't support MPEG-1 audio decoding, please install appropriate plugins.\n");
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return E_FAIL;
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}
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wg_transform_destroy(transform);
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hr = transform_create(outer, &CLSID_CMpegAudioCodec, &mpeg_audio_codec_transform_ops, &object);
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if (FAILED(hr))
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return hr;
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wcscpy(object->sink.pin.name, L"XForm In");
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wcscpy(object->source.pin.name, L"XForm Out");
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TRACE("Created MPEG audio decoder %p.\n", object);
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*out = &object->filter.IUnknown_inner;
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return hr;
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}
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