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* modules/access/dshow/*: handle upside down pictures (a bit hacky though).

This commit is contained in:
Gildas Bazin 2003-08-27 07:31:26 +00:00
parent 97f2fb96f1
commit ef700f0757
2 changed files with 100 additions and 12 deletions
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106
modules/access/dshow/dshow.cpp
View File

@ -2,7 +2,7 @@
* dshow.c : DirectShow access module for vlc
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: dshow.cpp,v 1.4 2003/08/26 19:14:09 gbazin Exp $
* $Id: dshow.cpp,v 1.5 2003/08/27 07:31:26 gbazin Exp $
*
* Author: Gildas Bazin <gbazin@netcourrier.com>
*
@ -140,6 +140,7 @@ typedef struct dshow_stream_t
CaptureFilter *p_capture_filter;
AM_MEDIA_TYPE mt;
int i_fourcc;
vlc_bool_t b_invert;
union
{
@ -428,6 +429,7 @@ static int OpenDevice( input_thread_t *p_input, string devicename,
{
/* Success */
dshow_stream_t dshow_stream;
dshow_stream.b_invert = VLC_FALSE;
dshow_stream.mt =
p_capture_filter->CustomGetPin()->CustomGetMediaType();
@ -467,6 +469,19 @@ static int OpenDevice( input_thread_t *p_input, string devicename,
dshow_stream.header.video =
*(VIDEOINFOHEADER *)dshow_stream.mt.pbFormat;
int i_height = dshow_stream.header.video.bmiHeader.biHeight;
/* Check if the image is inverted (bottom to top) */
if( dshow_stream.i_fourcc == VLC_FOURCC( 'R', 'V', '1', '5' ) ||
dshow_stream.i_fourcc == VLC_FOURCC( 'R', 'V', '1', '6' ) ||
dshow_stream.i_fourcc == VLC_FOURCC( 'R', 'V', '2', '4' ) ||
dshow_stream.i_fourcc == VLC_FOURCC( 'R', 'V', '3', '2' ) ||
dshow_stream.i_fourcc == VLC_FOURCC( 'R', 'G', 'B', 'A' ) )
{
if( i_height > 0 ) dshow_stream.b_invert = VLC_TRUE;
else i_height = - i_height;
}
/* Add video stream to header */
p_sys->i_header_size += 20;
p_sys->p_header = (uint8_t *)realloc( p_sys->p_header,
@ -476,8 +491,7 @@ static int OpenDevice( input_thread_t *p_input, string devicename,
&dshow_stream.i_fourcc, 4 );
SetDWBE( &p_sys->p_header[p_sys->i_header_pos + 8],
dshow_stream.header.video.bmiHeader.biWidth );
SetDWBE( &p_sys->p_header[p_sys->i_header_pos + 12],
dshow_stream.header.video.bmiHeader.biHeight );
SetDWBE( &p_sys->p_header[p_sys->i_header_pos + 12], i_height );
SetDWBE( &p_sys->p_header[p_sys->i_header_pos + 16], 0 );
p_sys->i_header_pos = p_sys->i_header_size;
}
@ -683,10 +697,79 @@ static int Read( input_thread_t * p_input, byte_t * p_buffer, size_t i_len )
int i_copy = __MIN( p_stream->i_data_size -
p_stream->i_data_pos, (int)i_len );
memcpy( p_buffer, &p_stream->p_data[p_stream->i_data_pos],
i_copy );
p_stream->i_data_pos += i_copy;
if( !p_stream->b_invert )
{
p_input->p_vlc->pf_memcpy( p_buffer,
&p_stream->p_data[p_stream->i_data_pos], i_copy );
}
else
{
int i_copied;
int i_width = p_stream->header.video.bmiHeader.biWidth;
int i_height = p_stream->header.video.bmiHeader.biHeight;
switch( p_stream->i_fourcc )
{
case VLC_FOURCC( 'R', 'V', '1', '5' ):
case VLC_FOURCC( 'R', 'V', '1', '6' ):
i_width *= 2;
break;
case VLC_FOURCC( 'R', 'V', '2', '4' ):
i_width *= 3;
break;
case VLC_FOURCC( 'R', 'V', '3', '2' ):
case VLC_FOURCC( 'R', 'G', 'B', 'A' ):
i_width *= 4;
break;
}
int i_line_pos = i_height - 1 - p_stream->i_data_pos / i_width;
int i_offset = p_stream->i_data_pos % i_width;
i_copied = __MIN( i_width - i_offset, i_copy );
/* copy already started line if any */
if( i_copied )
{
memcpy( p_buffer,
&p_stream->p_data[i_line_pos * i_width + i_offset],
i_copied );
p_stream->i_data_pos += i_copied;
p_buffer += i_copied;
i_len -= i_copied;
i_data += i_copied;
i_copy -= i_copied;
}
/* The caller got what he wanted */
if( i_len <= 0 ) return i_data;
i_line_pos = i_height - 1 - p_stream->i_data_pos / i_width;
i_copied = i_copy / i_width;
while( i_copied )
{
memcpy( p_buffer, &p_stream->p_data[i_line_pos * i_width],
i_width );
p_stream->i_data_pos += i_width;
p_buffer += i_width;
i_len -= i_width;
i_data += i_width;
i_copy -= i_width;
i_line_pos--;
i_copied--;
}
/* copy left over if any */
if( i_copy )
{
memcpy( p_buffer, &p_stream->p_data[i_line_pos * i_width],
i_copy );
}
}
p_stream->i_data_pos += i_copy;
p_buffer += i_copy;
i_len -= i_copy;
i_data += i_copy;
@ -704,7 +787,11 @@ static int Read( input_thread_t * p_input, byte_t * p_buffer, size_t i_len )
}
/* Get new sample/frame from next stream */
//if( p_stream->sample.p_sample ) p_stream->sample.p_sample->Release();
if( p_stream->sample.p_sample )
{
p_stream->sample.p_sample->Release();
p_stream->sample.p_sample = NULL;
}
p_sys->i_current_stream =
(p_sys->i_current_stream + 1) % p_sys->i_streams;
p_stream = p_sys->pp_streams[p_sys->i_current_stream];
@ -729,7 +816,8 @@ static int Read( input_thread_t * p_input, byte_t * p_buffer, size_t i_len )
}
#if 0
msg_Dbg( p_input, "Read() PTS: "I64Fd, i_pts );
msg_Dbg( p_input, "Read() stream: %i PTS: "I64Fd,
p_sys->i_current_stream, i_pts );
#endif
/* Create pseudo header */
@ -739,7 +827,7 @@ static int Read( input_thread_t * p_input, byte_t * p_buffer, size_t i_len )
SetDWBE( &p_sys->p_header[4], p_stream->i_data_size );
SetQWBE( &p_sys->p_header[8], i_pts * 9 / 1000 );
}
else msleep( 10000 );
else msleep( 1000 );
}
return i_data;

6
modules/access/dshow/filter.cpp
View File

@ -2,7 +2,7 @@
* filter.c : DirectShow access module for vlc
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: filter.cpp,v 1.3 2003/08/26 19:14:10 gbazin Exp $
* $Id: filter.cpp,v 1.4 2003/08/27 07:31:26 gbazin Exp $
*
* Author: Gildas Bazin <gbazin@netcourrier.com>
*
@ -387,7 +387,7 @@ STDMETHODIMP CapturePin::Receive( IMediaSample *pSample )
//msg_Dbg( p_input, "CapturePin::Receive" );
#endif
//pSample->AddRef();
pSample->AddRef();
mtime_t i_timestamp = mdate() * 10;
VLCMediaSample vlc_sample = {pSample, i_timestamp};
samples_queue.push_front( vlc_sample );
@ -398,7 +398,7 @@ STDMETHODIMP CapturePin::Receive( IMediaSample *pSample )
vlc_sample = samples_queue.back();
samples_queue.pop_back();
msg_Dbg( p_input, "CapturePin::Receive trashing late input sample" );
// vlc_sample.p_sample->Release();
vlc_sample.p_sample->Release();
}
return S_OK;