dlls/windowscodecs/unix_iface.c

   1 /*
   2  * unix_iface.c - This is the Win32 side of the Unix interface.
   3  *
   4  * Copyright 2020 Esme Povirk
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #define NONAMELESSUNION
  24 #define COBJMACROS
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "objbase.h"
  29 #include "winternl.h"
  30
  31 #include "wincodecs_private.h"
  32
  33 #include "wine/debug.h"
  34
  35 static INIT_ONCE init_once = INIT_ONCE_STATIC_INIT;
  36
  37 static const struct unix_funcs *unix_funcs;
  38
  39 static const struct win32_funcs win32_funcs = {
  40     stream_getsize,
  41     stream_read,
  42     stream_seek,
  43     stream_write
  44 };
  45
  46 static BOOL WINAPI load_unixlib( INIT_ONCE *once, void *param, void **context )
  47 {
  48     __wine_init_unix_lib( windowscodecs_module, DLL_PROCESS_ATTACH, &win32_funcs, &unix_funcs );
  49     return TRUE;
  50 }
  51
  52 static void init_unixlib(void)
  53 {
  54     InitOnceExecuteOnce( &init_once, load_unixlib, NULL, NULL );
  55 }
  56
  57 struct decoder_wrapper
  58 {
  59     struct decoder win32_decoder;
  60     struct decoder *unix_decoder;
  61 };
  62
  63 static inline struct decoder_wrapper *impl_from_decoder(struct decoder* iface)
  64 {
  65     return CONTAINING_RECORD(iface, struct decoder_wrapper, win32_decoder);
  66 }
  67
  68 HRESULT CDECL decoder_wrapper_initialize(struct decoder* iface, IStream* stream, struct decoder_stat *st)
  69 {
  70     struct decoder_wrapper* This = impl_from_decoder(iface);
  71     return unix_funcs->decoder_initialize(This->unix_decoder, stream, st);
  72 }
  73
  74 HRESULT CDECL decoder_wrapper_get_frame_info(struct decoder* iface, UINT frame, struct decoder_frame *info)
  75 {
  76     struct decoder_wrapper* This = impl_from_decoder(iface);
  77     return unix_funcs->decoder_get_frame_info(This->unix_decoder, frame, info);
  78 }
  79
  80 HRESULT CDECL decoder_wrapper_copy_pixels(struct decoder* iface, UINT frame,
  81     const WICRect *prc, UINT stride, UINT buffersize, BYTE *buffer)
  82 {
  83     struct decoder_wrapper* This = impl_from_decoder(iface);
  84     return unix_funcs->decoder_copy_pixels(This->unix_decoder, frame, prc, stride, buffersize, buffer);
  85 }
  86
  87 HRESULT CDECL decoder_wrapper_get_metadata_blocks(struct decoder* iface,
  88     UINT frame, UINT *count, struct decoder_block **blocks)
  89 {
  90     struct decoder_wrapper* This = impl_from_decoder(iface);
  91     return unix_funcs->decoder_get_metadata_blocks(This->unix_decoder, frame, count, blocks);
  92 }
  93
  94 HRESULT CDECL decoder_wrapper_get_color_context(struct decoder* iface,
  95     UINT frame, UINT num, BYTE **data, DWORD *datasize)
  96 {
  97     struct decoder_wrapper* This = impl_from_decoder(iface);
  98     return unix_funcs->decoder_get_color_context(This->unix_decoder, frame, num, data, datasize);
  99 }
 100
 101 void CDECL decoder_wrapper_destroy(struct decoder* iface)
 102 {
 103     struct decoder_wrapper* This = impl_from_decoder(iface);
 104     unix_funcs->decoder_destroy(This->unix_decoder);
 105     HeapFree(GetProcessHeap(), 0, This);
 106 }
 107
 108 static const struct decoder_funcs decoder_wrapper_vtable = {
 109     decoder_wrapper_initialize,
 110     decoder_wrapper_get_frame_info,
 111     decoder_wrapper_copy_pixels,
 112     decoder_wrapper_get_metadata_blocks,
 113     decoder_wrapper_get_color_context,
 114     decoder_wrapper_destroy
 115 };
 116
 117 HRESULT get_unix_decoder(const CLSID *decoder_clsid, struct decoder_info *info, struct decoder **result)
 118 {
 119     HRESULT hr;
 120     struct decoder_wrapper *wrapper;
 121     struct decoder *unix_decoder;
 122
 123     init_unixlib();
 124
 125     hr = unix_funcs->decoder_create(decoder_clsid, info, &unix_decoder);
 126
 127     if (SUCCEEDED(hr))
 128     {
 129         wrapper = HeapAlloc(GetProcessHeap(), 0, sizeof(*wrapper));
 130
 131         if (!wrapper)
 132         {
 133             unix_funcs->decoder_destroy(unix_decoder);
 134             return E_OUTOFMEMORY;
 135         }
 136
 137         wrapper->win32_decoder.vtable = &decoder_wrapper_vtable;
 138         wrapper->unix_decoder = unix_decoder;
 139         *result = &wrapper->win32_decoder;
 140     }
 141
 142     return hr;
 143 }
 144
 145 struct encoder_wrapper
 146 {
 147     struct encoder win32_encoder;
 148     struct encoder *unix_encoder;
 149 };
 150
 151 static inline struct encoder_wrapper *impl_from_encoder(struct encoder* iface)
 152 {
 153     return CONTAINING_RECORD(iface, struct encoder_wrapper, win32_encoder);
 154 }
 155
 156 HRESULT CDECL encoder_wrapper_initialize(struct encoder* iface, IStream* stream)
 157 {
 158     struct encoder_wrapper* This = impl_from_encoder(iface);
 159     return unix_funcs->encoder_initialize(This->unix_encoder, stream);
 160 }
 161
 162 HRESULT CDECL encoder_wrapper_get_supported_format(struct encoder* iface, GUID *pixel_format, DWORD *bpp, BOOL *indexed)
 163 {
 164     struct encoder_wrapper* This = impl_from_encoder(iface);
 165     return unix_funcs->encoder_get_supported_format(This->unix_encoder, pixel_format, bpp, indexed);
 166 }
 167
 168 HRESULT CDECL encoder_wrapper_create_frame(struct encoder* iface, const struct encoder_frame *frame)
 169 {
 170     struct encoder_wrapper* This = impl_from_encoder(iface);
 171     return unix_funcs->encoder_create_frame(This->unix_encoder, frame);
 172 }
 173
 174 HRESULT CDECL encoder_wrapper_write_lines(struct encoder* iface, BYTE *data, DWORD line_count, DWORD stride)
 175 {
 176     struct encoder_wrapper* This = impl_from_encoder(iface);
 177     return unix_funcs->encoder_write_lines(This->unix_encoder, data, line_count, stride);
 178 }
 179
 180 HRESULT CDECL encoder_wrapper_commit_frame(struct encoder* iface)
 181 {
 182     struct encoder_wrapper* This = impl_from_encoder(iface);
 183     return unix_funcs->encoder_commit_frame(This->unix_encoder);
 184 }
 185
 186 HRESULT CDECL encoder_wrapper_commit_file(struct encoder* iface)
 187 {
 188     struct encoder_wrapper* This = impl_from_encoder(iface);
 189     return unix_funcs->encoder_commit_file(This->unix_encoder);
 190 }
 191
 192 void CDECL encoder_wrapper_destroy(struct encoder* iface)
 193 {
 194     struct encoder_wrapper* This = impl_from_encoder(iface);
 195     unix_funcs->encoder_destroy(This->unix_encoder);
 196     HeapFree(GetProcessHeap(), 0, This);
 197 }
 198
 199 static const struct encoder_funcs encoder_wrapper_vtable = {
 200     encoder_wrapper_initialize,
 201     encoder_wrapper_get_supported_format,
 202     encoder_wrapper_create_frame,
 203     encoder_wrapper_write_lines,
 204     encoder_wrapper_commit_frame,
 205     encoder_wrapper_commit_file,
 206     encoder_wrapper_destroy
 207 };
 208
 209 HRESULT get_unix_encoder(const CLSID *encoder_clsid, struct encoder_info *info, struct encoder **result)
 210 {
 211     HRESULT hr;
 212     struct encoder_wrapper *wrapper;
 213     struct encoder *unix_encoder;
 214
 215     init_unixlib();
 216
 217     hr = unix_funcs->encoder_create(encoder_clsid, info, &unix_encoder);
 218
 219     if (SUCCEEDED(hr))
 220     {
 221         wrapper = HeapAlloc(GetProcessHeap(), 0, sizeof(*wrapper));
 222
 223         if (!wrapper)
 224         {
 225             unix_funcs->encoder_destroy(unix_encoder);
 226             return E_OUTOFMEMORY;
 227         }
 228
 229         wrapper->win32_encoder.vtable = &encoder_wrapper_vtable;
 230         wrapper->unix_encoder = unix_encoder;
 231         *result = &wrapper->win32_encoder;
 232     }
 233
 234     return hr;
 235 }