Qt4 - Remove the enqueue button and regroup it under the play button, since it is...
[vlc.git] / modules / video_chroma / i420_rgb.h
1 /*****************************************************************************
2  * i420_rgb.h : YUV to bitmap RGB conversion module for vlc
3  *****************************************************************************
4  * Copyright (C) 2000, 2004 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Samuel Hocevar <sam@zoy.org>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  * 
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22  *****************************************************************************/
23
24 /** Number of entries in RGB palette/colormap */
25 #define CMAP_RGB2_SIZE 256
26
27 /**
28  * chroma_sys_t: chroma method descriptor
29
30  * This structure is part of the chroma transformation descriptor, it
31  * describes the yuv2rgb specific properties.
32  */
33 struct chroma_sys_t
34 {
35     uint8_t  *p_buffer;
36     int *p_offset;
37
38 #ifdef MODULE_NAME_IS_i420_rgb
39     /**< Pre-calculated conversion tables */
40     void *p_base;                      /**< base for all conversion tables */
41     uint8_t   *p_rgb8;                 /**< RGB 8 bits table */
42     uint16_t  *p_rgb16;                /**< RGB 16 bits table */
43     uint32_t  *p_rgb32;                /**< RGB 32 bits table */
44
45     /**< To get RGB value for palette entry i, use (p_rgb_r[i], p_rgb_g[i],
46        p_rgb_b[i]). Note these are 16 bits per pixel. For 8bpp entries,
47        shift right 8 bits.
48     */
49     uint16_t  p_rgb_r[CMAP_RGB2_SIZE];  /**< Red values of palette */
50     uint16_t  p_rgb_g[CMAP_RGB2_SIZE];  /**< Green values of palette */
51     uint16_t  p_rgb_b[CMAP_RGB2_SIZE];  /**< Blue values of palette */
52 #endif
53 };
54
55 /*****************************************************************************
56  * Prototypes
57  *****************************************************************************/
58 #ifdef MODULE_NAME_IS_i420_rgb
59 void E_(I420_RGB8)         ( vout_thread_t *, picture_t *, picture_t * );
60 void E_(I420_RGB16_dither) ( vout_thread_t *, picture_t *, picture_t * );
61 #endif
62 void E_(I420_RGB16)        ( vout_thread_t *, picture_t *, picture_t * );
63 void E_(I420_RGB32)        ( vout_thread_t *, picture_t *, picture_t * );
64
65 /*****************************************************************************
66  * CONVERT_*_PIXEL: pixel conversion macros
67  *****************************************************************************
68  * These conversion routines are used by YUV conversion functions.
69  * conversion are made from p_y, p_u, p_v, which are modified, to p_buffer,
70  * which is also modified. CONVERT_4YUV_PIXEL is used for 8bpp dithering,
71  * CONVERT_4YUV_PIXEL_SCALE does the same but also scales the output.
72  *****************************************************************************/
73 #define CONVERT_Y_PIXEL( BPP )                                                \
74     /* Only Y sample is present */                                            \
75     p_ybase = p_yuv + *p_y++;                                                 \
76     *p_buffer++ = p_ybase[RED_OFFSET-((V_RED_COEF*128)>>SHIFT) + i_red] |     \
77         p_ybase[GREEN_OFFSET-(((U_GREEN_COEF+V_GREEN_COEF)*128)>>SHIFT)       \
78         + i_green ] | p_ybase[BLUE_OFFSET-((U_BLUE_COEF*128)>>SHIFT) + i_blue];
79
80 #define CONVERT_YUV_PIXEL( BPP )                                              \
81     /* Y, U and V samples are present */                                      \
82     i_uval =    *p_u++;                                                       \
83     i_vval =    *p_v++;                                                       \
84     i_red =     (V_RED_COEF * i_vval) >> SHIFT;                               \
85     i_green =   (U_GREEN_COEF * i_uval + V_GREEN_COEF * i_vval) >> SHIFT;     \
86     i_blue =    (U_BLUE_COEF * i_uval) >> SHIFT;                              \
87     CONVERT_Y_PIXEL( BPP )                                                    \
88
89 #define CONVERT_Y_PIXEL_DITHER( BPP )                                         \
90     /* Only Y sample is present */                                            \
91     p_ybase = p_yuv + *p_y++;                                                 \
92     *p_buffer++ = p_ybase[RED_OFFSET-((V_RED_COEF*128+p_dither[i_real_y])>>SHIFT) + i_red] |     \
93         p_ybase[GREEN_OFFSET-(((U_GREEN_COEF+V_GREEN_COEF)*128+p_dither[i_real_y])>>SHIFT)       \
94         + i_green ] | p_ybase[BLUE_OFFSET-((U_BLUE_COEF*128+p_dither[i_real_y])>>SHIFT) + i_blue];
95
96 #define CONVERT_YUV_PIXEL_DITHER( BPP )                                       \
97     /* Y, U and V samples are present */                                      \
98     i_uval =    *p_u++;                                                       \
99     i_vval =    *p_v++;                                                       \
100     i_red =     (V_RED_COEF * i_vval) >> SHIFT;                               \
101     i_green =   (U_GREEN_COEF * i_uval + V_GREEN_COEF * i_vval) >> SHIFT;     \
102     i_blue =    (U_BLUE_COEF * i_uval) >> SHIFT;                              \
103     CONVERT_Y_PIXEL_DITHER( BPP )                                             \
104
105 #define CONVERT_4YUV_PIXEL( CHROMA )                                          \
106     *p_pic++ = p_lookup[                                                      \
107         (((*p_y++ + dither10[i_real_y]) >> 4) << 7)                           \
108       + ((*p_u + dither20[i_real_y]) >> 5) * 9                                \
109       + ((*p_v + dither20[i_real_y]) >> 5) ];                                 \
110     *p_pic++ = p_lookup[                                                      \
111         (((*p_y++ + dither11[i_real_y]) >> 4) << 7)                           \
112       + ((*p_u++ + dither21[i_real_y]) >> 5) * 9                              \
113       + ((*p_v++ + dither21[i_real_y]) >> 5) ];                               \
114     *p_pic++ = p_lookup[                                                      \
115         (((*p_y++ + dither12[i_real_y]) >> 4) << 7)                           \
116       + ((*p_u + dither22[i_real_y]) >> 5) * 9                                \
117       + ((*p_v + dither22[i_real_y]) >> 5) ];                                 \
118     *p_pic++ = p_lookup[                                                      \
119         (((*p_y++ + dither13[i_real_y]) >> 4) << 7)                           \
120       + ((*p_u++ + dither23[i_real_y]) >> 5) * 9                              \
121       + ((*p_v++ + dither23[i_real_y]) >> 5) ];                               \
122
123 #define CONVERT_4YUV_PIXEL_SCALE( CHROMA )                                    \
124     *p_pic++ = p_lookup[                                                      \
125         ( ((*p_y + dither10[i_real_y]) >> 4) << 7)                            \
126         + ((*p_u + dither20[i_real_y]) >> 5) * 9                              \
127         + ((*p_v + dither20[i_real_y]) >> 5) ];                               \
128     p_y += *p_offset++;                                                       \
129     p_u += *p_offset;                                                         \
130     p_v += *p_offset++;                                                       \
131     *p_pic++ = p_lookup[                                                      \
132         ( ((*p_y + dither11[i_real_y]) >> 4) << 7)                            \
133         + ((*p_u + dither21[i_real_y]) >> 5) * 9                              \
134         + ((*p_v + dither21[i_real_y]) >> 5) ];                               \
135     p_y += *p_offset++;                                                       \
136     p_u += *p_offset;                                                         \
137     p_v += *p_offset++;                                                       \
138     *p_pic++ = p_lookup[                                                      \
139         ( ((*p_y + dither12[i_real_y]) >> 4) << 7)                            \
140         + ((*p_u + dither22[i_real_y]) >> 5) * 9                              \
141         + ((*p_v + dither22[i_real_y]) >> 5) ];                               \
142     p_y += *p_offset++;                                                       \
143     p_u += *p_offset;                                                         \
144     p_v += *p_offset++;                                                       \
145     *p_pic++ = p_lookup[                                                      \
146         ( ((*p_y + dither13[i_real_y]) >> 4) << 7)                            \
147         + ((*p_u + dither23[i_real_y]) >> 5) * 9                              \
148         + ((*p_v + dither23[i_real_y]) >> 5) ];                               \
149     p_y += *p_offset++;                                                       \
150     p_u += *p_offset;                                                         \
151     p_v += *p_offset++;                                                       \
152
153 /*****************************************************************************
154  * SCALE_WIDTH: scale a line horizontally
155  *****************************************************************************
156  * This macro scales a line using rendering buffer and offset array. It works
157  * for 1, 2 and 4 Bpp.
158  *****************************************************************************/
159 #define SCALE_WIDTH                                                           \
160     if( b_hscale )                                                            \
161     {                                                                         \
162         /* Horizontal scaling, conversion has been done to buffer.            \
163          * Rewind buffer and offset, then copy and scale line */              \
164         p_buffer = p_buffer_start;                                            \
165         p_offset = p_offset_start;                                            \
166         for( i_x = p_vout->output.i_width / 16; i_x--; )                      \
167         {                                                                     \
168             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
169             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
170             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
171             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
172             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
173             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
174             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
175             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
176             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
177             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
178             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
179             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
180             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
181             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
182             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
183             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
184         }                                                                     \
185         for( i_x = p_vout->output.i_width & 15; i_x--; )                      \
186         {                                                                     \
187             *p_pic++ = *p_buffer;   p_buffer += *p_offset++;                  \
188         }                                                                     \
189         p_pic = (void*)((uint8_t*)p_pic + i_right_margin );                   \
190     }                                                                         \
191     else                                                                      \
192     {                                                                         \
193         /* No scaling, conversion has been done directly in picture memory.   \
194          * Increment of picture pointer to end of line is still needed */     \
195         p_pic = (void*)((uint8_t*)p_pic + p_dest->p->i_pitch );               \
196     }                                                                         \
197
198 /*****************************************************************************
199  * SCALE_WIDTH_DITHER: scale a line horizontally for dithered 8 bpp
200  *****************************************************************************
201  * This macro scales a line using an offset array.
202  *****************************************************************************/
203 #define SCALE_WIDTH_DITHER( CHROMA )                                          \
204     if( b_hscale )                                                            \
205     {                                                                         \
206         /* Horizontal scaling - we can't use a buffer due to dithering */     \
207         p_offset = p_offset_start;                                            \
208         for( i_x = p_vout->output.i_width / 16; i_x--; )                      \
209         {                                                                     \
210             CONVERT_4YUV_PIXEL_SCALE( CHROMA )                                \
211             CONVERT_4YUV_PIXEL_SCALE( CHROMA )                                \
212             CONVERT_4YUV_PIXEL_SCALE( CHROMA )                                \
213             CONVERT_4YUV_PIXEL_SCALE( CHROMA )                                \
214         }                                                                     \
215     }                                                                         \
216     else                                                                      \
217     {                                                                         \
218         for( i_x = p_vout->render.i_width / 16; i_x--;  )                     \
219         {                                                                     \
220             CONVERT_4YUV_PIXEL( CHROMA )                                      \
221             CONVERT_4YUV_PIXEL( CHROMA )                                      \
222             CONVERT_4YUV_PIXEL( CHROMA )                                      \
223             CONVERT_4YUV_PIXEL( CHROMA )                                      \
224         }                                                                     \
225     }                                                                         \
226     /* Increment of picture pointer to end of line is still needed */         \
227     p_pic = (void*)((uint8_t*)p_pic + i_right_margin );                       \
228                                                                               \
229     /* Increment the Y coordinate in the matrix, modulo 4 */                  \
230     i_real_y = (i_real_y + 1) & 0x3;                                          \
231
232 /*****************************************************************************
233  * SCALE_HEIGHT: handle vertical scaling
234  *****************************************************************************
235  * This macro handle vertical scaling for a picture. CHROMA may be 420, 422 or
236  * 444 for RGB conversion, or 400 for gray conversion. It works for 1, 2, 3
237  * and 4 Bpp.
238  *****************************************************************************/
239 #define SCALE_HEIGHT( CHROMA, BPP )                                           \
240     /* If line is odd, rewind 4:2:0 U and V samples */                        \
241     if( ((CHROMA == 420) || (CHROMA == 422)) && !(i_y & 0x1) )                \
242     {                                                                         \
243         p_u -= i_chroma_width;                                                \
244         p_v -= i_chroma_width;                                                \
245     }                                                                         \
246                                                                               \
247     /*                                                                        \
248      * Handle vertical scaling. The current line can be copied or next one    \
249      * can be ignored.                                                        \
250      */                                                                       \
251     switch( i_vscale )                                                        \
252     {                                                                         \
253     case -1:                             /* vertical scaling factor is < 1 */ \
254         while( (i_scale_count -= p_vout->output.i_height) > 0 )               \
255         {                                                                     \
256             /* Height reduction: skip next source line */                     \
257             p_y += p_vout->render.i_width;                                    \
258             i_y++;                                                            \
259             if( (CHROMA == 420) || (CHROMA == 422) )                          \
260             {                                                                 \
261                 if( i_y & 0x1 )                                               \
262                 {                                                             \
263                     p_u += i_chroma_width;                                    \
264                     p_v += i_chroma_width;                                    \
265                 }                                                             \
266             }                                                                 \
267             else if( CHROMA == 444 )                                          \
268             {                                                                 \
269                 p_u += p_vout->render.i_width;                                \
270                 p_v += p_vout->render.i_width;                                \
271             }                                                                 \
272         }                                                                     \
273         i_scale_count += p_vout->render.i_height;                             \
274         break;                                                                \
275     case 1:                              /* vertical scaling factor is > 1 */ \
276         while( (i_scale_count -= p_vout->render.i_height) > 0 )               \
277         {                                                                     \
278             /* Height increment: copy previous picture line */                \
279             p_vout->p_libvlc->pf_memcpy( p_pic, p_pic_start,                     \
280                                       p_vout->output.i_width * BPP );         \
281             p_pic = (void*)((uint8_t*)p_pic + p_dest->p->i_pitch );           \
282         }                                                                     \
283         i_scale_count += p_vout->output.i_height;                             \
284         break;                                                                \
285     }                                                                         \
286
287 /*****************************************************************************
288  * SCALE_HEIGHT_DITHER: handle vertical scaling for dithered 8 bpp
289  *****************************************************************************
290  * This macro handles vertical scaling for a picture. CHROMA may be 420,
291  * 422 or 444 for RGB conversion, or 400 for gray conversion.
292  *****************************************************************************/
293 #define SCALE_HEIGHT_DITHER( CHROMA )                                         \
294                                                                               \
295     /* If line is odd, rewind 4:2:0 U and V samples */                        \
296     if( ((CHROMA == 420) || (CHROMA == 422)) && !(i_y & 0x1) )                \
297     {                                                                         \
298         p_u -= i_chroma_width;                                                \
299         p_v -= i_chroma_width;                                                \
300     }                                                                         \
301                                                                               \
302     /*                                                                        \
303      * Handle vertical scaling. The current line can be copied or next one    \
304      * can be ignored.                                                        \
305      */                                                                       \
306                                                                               \
307     switch( i_vscale )                                                        \
308     {                                                                         \
309     case -1:                             /* vertical scaling factor is < 1 */ \
310         while( (i_scale_count -= p_vout->output.i_height) > 0 )               \
311         {                                                                     \
312             /* Height reduction: skip next source line */                     \
313             p_y += p_vout->render.i_width;                                    \
314             i_y++;                                                            \
315             if( (CHROMA == 420) || (CHROMA == 422) )                          \
316             {                                                                 \
317                 if( i_y & 0x1 )                                               \
318                 {                                                             \
319                     p_u += i_chroma_width;                                    \
320                     p_v += i_chroma_width;                                    \
321                 }                                                             \
322             }                                                                 \
323             else if( CHROMA == 444 )                                          \
324             {                                                                 \
325                 p_u += p_vout->render.i_width;                                \
326                 p_v += p_vout->render.i_width;                                \
327             }                                                                 \
328         }                                                                     \
329         i_scale_count += p_vout->render.i_height;                             \
330         break;                                                                \
331     case 1:                              /* vertical scaling factor is > 1 */ \
332         while( (i_scale_count -= p_vout->render.i_height) > 0 )               \
333         {                                                                     \
334             p_y -= p_vout->render.i_width;                                    \
335             p_u -= i_chroma_width;                                            \
336             p_v -= i_chroma_width;                                            \
337             SCALE_WIDTH_DITHER( CHROMA );                                     \
338         }                                                                     \
339         i_scale_count += p_vout->output.i_height;                             \
340         break;                                                                \
341     }                                                                         \
342