forked from len0rd/rockbox
05099149f1
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16981 a1c6a512-1295-4272-9138-f99709370657
521 lines
12 KiB
C
521 lines
12 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* mpegplayer video output routines
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "mpeg2dec_config.h"
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#include "plugin.h"
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#include "mpegplayer.h"
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#define VO_NON_NULL_RECT 0x1
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#define VO_VISIBLE 0x2
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struct vo_data
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{
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int image_width;
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int image_height;
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int image_chroma_x;
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int image_chroma_y;
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int display_width;
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int display_height;
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int output_x;
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int output_y;
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int output_width;
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int output_height;
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unsigned flags;
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struct vo_rect rc_vid;
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struct vo_rect rc_clip;
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};
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#ifdef PROC_NEEDS_CACHEALIGN
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/* Cache aligned and padded to avoid clobbering other processors' cacheable
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* data */
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static uint8_t __vo_data[CACHEALIGN_UP(sizeof(struct vo_data))]
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CACHEALIGN_ATTR;
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#define vo (*((struct vo_data *)__vo_data))
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#else
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static struct vo_data vo;
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#endif
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#if NUM_CORES > 1
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static struct mutex vo_mtx SHAREDBSS_ATTR;
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#endif
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static inline void video_lock_init(void)
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{
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#if NUM_CORES > 1
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rb->mutex_init(&vo_mtx);
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#endif
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}
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static inline void video_lock(void)
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{
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#if NUM_CORES > 1
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rb->mutex_lock(&vo_mtx);
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#endif
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}
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static inline void video_unlock(void)
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{
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#if NUM_CORES > 1
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rb->mutex_unlock(&vo_mtx);
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#endif
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}
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/* Draw a black rectangle if no video frame is available */
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static void vo_draw_black(void)
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{
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int foreground;
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video_lock();
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foreground = lcd_(get_foreground)();
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lcd_(set_foreground)(DRAW_BLACK);
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lcd_(fillrect)(vo.output_x, vo.output_y, vo.output_width,
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vo.output_height);
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lcd_(update_rect)(vo.output_x, vo.output_y, vo.output_width,
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vo.output_height);
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lcd_(set_foreground)(foreground);
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video_unlock();
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}
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static inline void yuv_blit(uint8_t * const * buf, int src_x, int src_y,
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int stride, int x, int y, int width, int height)
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{
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video_lock();
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#ifdef HAVE_LCD_COLOR
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rb->lcd_blit_yuv(buf, src_x, src_y, stride, x, y , width, height);
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#else
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grey_ub_gray_bitmap_part(buf[0], src_x, src_y, stride, x, y, width, height);
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#endif
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video_unlock();
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}
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void vo_draw_frame(uint8_t * const * buf)
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{
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if (vo.flags == 0)
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{
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/* Frame is hidden - copout */
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DEBUGF("vo hidden\n");
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return;
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}
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else if (buf == NULL)
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{
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/* No frame exists - draw black */
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vo_draw_black();
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DEBUGF("vo no frame\n");
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return;
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}
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yuv_blit(buf, 0, 0, vo.image_width,
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vo.output_x, vo.output_y, vo.output_width,
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vo.output_height);
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}
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static inline void vo_rect_clear_inl(struct vo_rect *rc)
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{
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rc->l = rc->t = rc->r = rc->b = 0;
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}
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static inline bool vo_rect_empty_inl(const struct vo_rect *rc)
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{
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return rc == NULL || rc->l >= rc->r || rc->t >= rc->b;
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}
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static inline bool vo_rects_intersect_inl(const struct vo_rect *rc1,
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const struct vo_rect *rc2)
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{
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return !vo_rect_empty_inl(rc1) &&
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!vo_rect_empty_inl(rc2) &&
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rc1->l < rc2->r && rc1->r > rc2->l &&
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rc1->t < rc2->b && rc1->b > rc2->t;
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}
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/* Sets all coordinates of a vo_rect to 0 */
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void vo_rect_clear(struct vo_rect *rc)
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{
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vo_rect_clear_inl(rc);
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}
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/* Returns true if left >= right or top >= bottom */
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bool vo_rect_empty(const struct vo_rect *rc)
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{
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return vo_rect_empty_inl(rc);
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}
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/* Initializes a vo_rect using upper-left corner and extents */
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void vo_rect_set_ext(struct vo_rect *rc, int x, int y,
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int width, int height)
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{
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rc->l = x;
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rc->t = y;
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rc->r = x + width;
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rc->b = y + height;
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}
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/* Query if two rectangles intersect */
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bool vo_rects_intersect(const struct vo_rect *rc1,
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const struct vo_rect *rc2)
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{
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return vo_rects_intersect_inl(rc1, rc2);
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}
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/* Intersect two rectangles, placing the result in rc_dst */
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bool vo_rect_intersect(struct vo_rect *rc_dst,
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const struct vo_rect *rc1,
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const struct vo_rect *rc2)
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{
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if (rc_dst != NULL)
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{
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if (vo_rects_intersect_inl(rc1, rc2))
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{
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rc_dst->l = MAX(rc1->l, rc2->l);
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rc_dst->r = MIN(rc1->r, rc2->r);
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rc_dst->t = MAX(rc1->t, rc2->t);
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rc_dst->b = MIN(rc1->b, rc2->b);
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return true;
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}
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vo_rect_clear_inl(rc_dst);
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}
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return false;
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}
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bool vo_rect_union(struct vo_rect *rc_dst,
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const struct vo_rect *rc1,
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const struct vo_rect *rc2)
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{
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if (rc_dst != NULL)
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{
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if (!vo_rect_empty_inl(rc1))
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{
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if (!vo_rect_empty_inl(rc2))
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{
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rc_dst->l = MIN(rc1->l, rc2->l);
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rc_dst->t = MIN(rc1->t, rc2->t);
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rc_dst->r = MAX(rc1->r, rc2->r);
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rc_dst->b = MAX(rc1->b, rc2->b);
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}
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else
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{
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*rc_dst = *rc1;
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}
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return true;
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}
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else if (!vo_rect_empty_inl(rc2))
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{
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*rc_dst = *rc2;
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return true;
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}
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vo_rect_clear_inl(rc_dst);
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}
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return false;
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}
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void vo_rect_offset(struct vo_rect *rc, int dx, int dy)
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{
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rc->l += dx;
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rc->t += dy;
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rc->r += dx;
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rc->b += dy;
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}
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/* Shink or stretch each axis - rotate counter-clockwise to retain upright
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* orientation on rotated displays (they rotate clockwise) */
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void stretch_image_plane(const uint8_t * src, uint8_t *dst, int stride,
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int src_w, int src_h, int dst_w, int dst_h)
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{
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uint8_t *dst_end = dst + dst_w*dst_h;
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#if LCD_WIDTH >= LCD_HEIGHT
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int src_w2 = src_w*2; /* 2x dimensions (for rounding before division) */
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int dst_w2 = dst_w*2;
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int src_h2 = src_h*2;
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int dst_h2 = dst_h*2;
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int qw = src_w2 / dst_w2; /* src-dst width ratio quotient */
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int rw = src_w2 - qw*dst_w2; /* src-dst width ratio remainder */
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int qh = src_h2 / dst_h2; /* src-dst height ratio quotient */
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int rh = src_h2 - qh*dst_h2; /* src-dst height ratio remainder */
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int dw = dst_w; /* Width error accumulator */
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int dh = dst_h; /* Height error accumulator */
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#else
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int src_w2 = src_w*2;
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int dst_w2 = dst_h*2;
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int src_h2 = src_h*2;
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int dst_h2 = dst_w*2;
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int qw = src_h2 / dst_w2;
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int rw = src_h2 - qw*dst_w2;
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int qh = src_w2 / dst_h2;
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int rh = src_w2 - qh*dst_h2;
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int dw = dst_h;
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int dh = dst_w;
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src += src_w - 1;
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#endif
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while (1)
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{
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const uint8_t *s = src;
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#if LCD_WIDTH >= LCD_HEIGHT
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uint8_t * const dst_line_end = dst + dst_w;
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#else
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uint8_t * const dst_line_end = dst + dst_h;
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#endif
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while (1)
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{
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*dst++ = *s;
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if (dst >= dst_line_end)
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{
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dw = dst_w;
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break;
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}
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#if LCD_WIDTH >= LCD_HEIGHT
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s += qw;
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#else
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s += qw*stride;
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#endif
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dw += rw;
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if (dw >= dst_w2)
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{
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dw -= dst_w2;
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#if LCD_WIDTH >= LCD_HEIGHT
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s++;
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#else
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s += stride;
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#endif
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}
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}
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if (dst >= dst_end)
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break;
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#if LCD_WIDTH >= LCD_HEIGHT
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src += qh*stride;
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#else
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src -= qh;
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#endif
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dh += rh;
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if (dh >= dst_h2)
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{
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dh -= dst_h2;
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#if LCD_WIDTH >= LCD_HEIGHT
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src += stride;
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#else
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src--;
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#endif
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}
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}
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}
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bool vo_draw_frame_thumb(uint8_t * const * buf, const struct vo_rect *rc)
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{
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void *mem;
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size_t bufsize;
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uint8_t *yuv[3];
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struct vo_rect thumb_rc;
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int thumb_width, thumb_height;
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int thumb_uv_width, thumb_uv_height;
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if (buf == NULL)
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return false;
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/* Obtain rectangle as clipped to the screen */
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vo_rect_set_ext(&thumb_rc, 0, 0, LCD_WIDTH, LCD_HEIGHT);
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if (!vo_rect_intersect(&thumb_rc, rc, &thumb_rc))
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return true;
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DEBUGF("thumb_rc: %d, %d, %d, %d\n", thumb_rc.l, thumb_rc.t,
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thumb_rc.r, thumb_rc.b);
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thumb_width = rc->r - rc->l;
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thumb_height = rc->b - rc->t;
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thumb_uv_width = thumb_width / 2;
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thumb_uv_height = thumb_height / 2;
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DEBUGF("thumb: w: %d h: %d uvw: %d uvh: %d\n", thumb_width,
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thumb_height, thumb_uv_width, thumb_uv_height);
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/* Use remaining mpeg2 buffer as temp space */
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mem = mpeg2_get_buf(&bufsize);
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if (bufsize < (size_t)(thumb_width*thumb_height)
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#ifdef HAVE_LCD_COLOR
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+ 2u*(thumb_uv_width * thumb_uv_height)
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#endif
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)
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{
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DEBUGF("thumb: insufficient buffer\n");
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return false;
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}
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yuv[0] = mem;
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stretch_image_plane(buf[0], yuv[0], vo.image_width,
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vo.display_width, vo.display_height,
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thumb_width, thumb_height);
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#ifdef HAVE_LCD_COLOR
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yuv[1] = yuv[0] + thumb_width*thumb_height;
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yuv[2] = yuv[1] + thumb_uv_width*thumb_uv_height;
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stretch_image_plane(buf[1], yuv[1], vo.image_width / 2,
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vo.display_width / 2, vo.display_height / 2,
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thumb_uv_width, thumb_uv_height);
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stretch_image_plane(buf[2], yuv[2], vo.image_width / 2,
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vo.display_width / 2, vo.display_height / 2,
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thumb_uv_width, thumb_uv_height);
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#endif
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#if LCD_WIDTH >= LCD_HEIGHT
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yuv_blit(yuv, 0, 0, thumb_width,
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thumb_rc.l, thumb_rc.t,
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thumb_rc.r - thumb_rc.l,
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thumb_rc.b - thumb_rc.t);
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#else
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yuv_blit(yuv, 0, 0, thumb_height,
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thumb_rc.t, thumb_rc.l,
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thumb_rc.b - thumb_rc.t,
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thumb_rc.r - thumb_rc.l);
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#endif /* LCD_WIDTH >= LCD_HEIGHT */
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return true;
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}
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void vo_setup(const mpeg2_sequence_t * sequence)
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{
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vo.image_width = sequence->width;
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vo.image_height = sequence->height;
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vo.display_width = sequence->display_width;
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vo.display_height = sequence->display_height;
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DEBUGF("vo_setup - w:%d h:%d\n", vo.display_width, vo.display_height);
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vo.image_chroma_x = vo.image_width / sequence->chroma_width;
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vo.image_chroma_y = vo.image_height / sequence->chroma_height;
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if (sequence->display_width >= SCREEN_WIDTH)
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{
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vo.rc_vid.l = 0;
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vo.rc_vid.r = SCREEN_WIDTH;
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}
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else
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{
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vo.rc_vid.l = (SCREEN_WIDTH - sequence->display_width) / 2;
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#ifdef HAVE_LCD_COLOR
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vo.rc_vid.l &= ~1;
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#endif
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vo.rc_vid.r = vo.rc_vid.l + sequence->display_width;
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}
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if (sequence->display_height >= SCREEN_HEIGHT)
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{
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vo.rc_vid.t = 0;
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vo.rc_vid.b = SCREEN_HEIGHT;
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}
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else
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{
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vo.rc_vid.t = (SCREEN_HEIGHT - sequence->display_height) / 2;
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#ifdef HAVE_LCD_COLOR
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vo.rc_vid.t &= ~1;
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#endif
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vo.rc_vid.b = vo.rc_vid.t + sequence->display_height;
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}
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vo_set_clip_rect(&vo.rc_clip);
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}
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void vo_dimensions(struct vo_ext *sz)
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{
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sz->w = vo.display_width;
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sz->h = vo.display_height;
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}
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bool vo_init(void)
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{
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vo.flags = 0;
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vo_rect_set_ext(&vo.rc_clip, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
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video_lock_init();
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return true;
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}
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bool vo_show(bool show)
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{
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bool vis = vo.flags & VO_VISIBLE;
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if (show)
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vo.flags |= VO_VISIBLE;
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else
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vo.flags &= ~VO_VISIBLE;
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return vis;
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}
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bool vo_is_visible(void)
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{
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return vo.flags & VO_VISIBLE;
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}
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void vo_cleanup(void)
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{
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vo.flags = 0;
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}
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void vo_set_clip_rect(const struct vo_rect *rc)
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{
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struct vo_rect rc_out;
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if (rc == NULL)
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vo_rect_set_ext(&vo.rc_clip, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
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else
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vo.rc_clip = *rc;
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if (!vo_rect_intersect(&rc_out, &vo.rc_vid, &vo.rc_clip))
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vo.flags &= ~VO_NON_NULL_RECT;
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else
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vo.flags |= VO_NON_NULL_RECT;
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vo.output_x = rc_out.l;
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vo.output_y = rc_out.t;
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vo.output_width = rc_out.r - rc_out.l;
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vo.output_height = rc_out.b - rc_out.t;
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}
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#if NUM_CORES > 1
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void vo_lock(void)
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{
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video_lock();
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}
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void vo_unlock(void)
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{
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video_unlock();
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}
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#endif
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