237 lines
28 KiB
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237 lines
28 KiB
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<div id="projectname">PicoVGA
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 <span id="projectnumber">1.2-cmake</span>
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<div id="projectbrief">VGA/TV display on Raspberry Pico</div>
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<div class="title">vga.h</div> </div>
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<div class="contents">
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<a href="vga_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>  </div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef _VGA_H</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define _VGA_H</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// scanline type</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#define LINE_VSYNC 0 </span><span class="comment">// long vertical sync</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#define LINE_VVSYNC 1 </span><span class="comment">// short vertical + vertical sync</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define LINE_VHSYNC 2 </span><span class="comment">// short vertical + horizontal sync</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#define LINE_HHSYNC 3 </span><span class="comment">// short horizontal + horizontal sync</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#define LINE_HVSYNC 4 </span><span class="comment">// short horizontal + vertical sync</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#define LINE_DARK 5 </span><span class="comment">// dark line</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#define LINE_IMG 6 </span><span class="comment">// progressive image 0, 1, 2,...</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#define LINE_IMGEVEN1 7 </span><span class="comment">// interlaced image even 0, 2, 4,..., 1st subframe</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#define LINE_IMGEVEN2 8 </span><span class="comment">// interlaced image even 0, 2, 4,..., 2nd subframe</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#define LINE_IMGODD1 9 </span><span class="comment">// interlaced image odd 1, 3, 5,..., 1st subframe</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#define LINE_IMGODD2 10 </span><span class="comment">// interlaced image odd 1, 3, 5,..., 2nd subframe</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">extern</span> u8 ScanlineType[MAXLINE];</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> DispDev; <span class="comment">// current display device</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">extern</span> <a class="code" href="structsVmode.html">sVmode</a> CurVmode; <span class="comment">// copy of current videomode table</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">//extern int LayerMode; // current layer mode (LAYERMODE_*)</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">extern</span> <span class="keyword">volatile</span> <span class="keywordtype">int</span> ScanLine; <span class="comment">// current scan line 1...</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">extern</span> <span class="keyword">volatile</span> u32 Frame; <span class="comment">// frame counter</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">extern</span> <span class="keyword">volatile</span> <span class="keywordtype">int</span> BufInx; <span class="comment">// current buffer set (0..1)</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">extern</span> <span class="keyword">volatile</span> Bool VSync; <span class="comment">// current scan line is vsync or dark</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// line buffers</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">extern</span> ALIGNED u8 LineBuf1[DBUF_MAX]; <span class="comment">// scanline 1 image data</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">extern</span> ALIGNED u8 LineBuf2[DBUF_MAX]; <span class="comment">// scanline 2 image data</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> LineBufSize[LAYERS_MAX]; <span class="comment">// size of data buffers</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">extern</span> u32 LineBufHsBp[4]; <span class="comment">// HSYNC ... back porch-1 ... IRQ command ... image command</span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">extern</span> u32 LineBufFp; <span class="comment">// front porch+1</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">extern</span> u32 LineBufDark[2]; <span class="comment">// HSYNC ... dark line</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">extern</span> u32 LineBufSync[10]; <span class="comment">// vertical synchronization</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">// interlaced (5x half scanlines):</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// 2x half synchronization (HSYNC pulse/2 ... line dark/2)</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// 2x vertical synchronization (invert line dark/2 ... invert HSYNC pulse)</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment">// 1x half synchronization (HSYNC pulse/2 ... line dark/2)</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// progressive: 1x scanline with vertical synchronization (invert line dark ... invert HSYNC pulse)</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">extern</span> ALIGNED u8 LineBuf0[BLACK_MAX]; <span class="comment">// line buffer with black color (used to clear rest of scanline)</span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment">// control buffers</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">extern</span> u32 CtrlBuf1[CBUF_MAX]; <span class="comment">// control pairs: u32 count, read address (must be terminated with [0,0])</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">extern</span> u32 CtrlBuf2[CBUF_MAX]; <span class="comment">// control pairs: u32 count, read address (must be terminated with [0,0])</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> CtrlBufSize[LAYERS_MAX]; <span class="comment">// size of control buffers</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  </div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// render font pixel mask</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">extern</span> u32 RenderTextMask[512];</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  </div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment">// fill memory buffer with u32 words</span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment">// buf ... data buffer, must be 32-bit aligned</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// data ... data word to store</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment">// num ... number of 32-bit words (= number of bytes/4)</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// Returns new destination address.</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> u32* MemSet4(u32* buf, u32 data, <span class="keywordtype">int</span> num);</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">// blit scanline using key color</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment">// dst ... destination buffer</span></div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// src ... source buffer</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// w ... width</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// key ... key color</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> <span class="keywordtype">void</span> BlitKey(u8* dst, u8* src, <span class="keywordtype">int</span> w, u8 key);</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  </div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">// render layers with sprites LAYERMODE_SPRITE*</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment">// dbuf ... pointer to data buffer</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// y ... coordinate of scanline</span></div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">// scr ... pointer to layer screen structure sLayer</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> <span class="keywordtype">void</span> RenderSprite(u8* dbuf, <span class="keywordtype">int</span> y, <a class="code" href="structsLayer.html">sLayer</a>* scr);</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">// render layers with fast sprites LAYERMODE_FASTSPRITE*</span></div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment">// cbuf ... pointer to control buffer</span></div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment">// y ... coordinate of scanline</span></div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// scr ... pointer to layer screen structure sLayer</span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// buf ... pointer to destination data buffer with transparent color</span></div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment">// Output new pointer to control buffer.</span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> u32* RenderFastSprite(u32* cbuf, <span class="keywordtype">int</span> y, <a class="code" href="structsLayer.html">sLayer</a>* scr, u8* buf);</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  </div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment">// render layers with transformation matrix LAYERMODE_PERSP*</span></div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// R0 ... dbuf pointer to data buffer</span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// R1 ... y coordinate of scanline (relative in destination image)</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">// R2 ... scr pointer to layer screen structure sLayer</span></div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> <span class="keywordtype">void</span> RenderPersp(u8* dbuf, <span class="keywordtype">int</span> y, <a class="code" href="structsLayer.html">sLayer</a>* scr);</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// render layers double pixel with transformation matrix LAYERMODE_PERSP2*</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment">// R0 ... dbuf pointer to data buffer</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment">// R1 ... y coordinate of scanline (relative in destination image)</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment">// R2 ... scr pointer to layer screen structure sLayer</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> <span class="keywordtype">void</span> RenderPersp2(u8* dbuf, <span class="keywordtype">int</span> y, <a class="code" href="structsLayer.html">sLayer</a>* scr);</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// render scanline</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment">// cbuf ... control buffer</span></div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment">// dbuf ... data buffer (pixel data)</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment">// line ... current line 0..</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment">// pixnum ... total pixels (must be multiple of 4)</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment">// Returns new pointer to control buffer</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> u32* Render(u32* cbuf, u8* dbuf, <span class="keywordtype">int</span> line, <span class="keywordtype">int</span> pixnum);</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  </div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment">// initialize scanline type table</span></div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="keywordtype">void</span> ScanlineTypeInit(<span class="keyword">const</span> <a class="code" href="structsVmode.html">sVmode</a>* v);</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">// print table if scanline types</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keywordtype">void</span> ScanlineTypePrint(<span class="keyword">const</span> u8* scan, <span class="keywordtype">int</span> lines);</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment">// initialize videomode (returns False on bad configuration)</span></div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment">// - All layer modes must use same layer program (LAYERMODE_BASE = overlapped layers are OFF)</span></div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="keywordtype">void</span> VgaInit(<span class="keyword">const</span> <a class="code" href="structsVmode.html">sVmode</a>* vmode); <span class="comment">//, u8 layer1mode=LAYERMODE_BASE, u8 layer2mode=LAYERMODE_BASE, u8 layer3mode=LAYERMODE_BASE);</span></div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  </div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="keywordtype">void</span> <a class="code" href="group__VideoInitGroup.html#ga635c059231b4b8c8bbf4162a9044fcd6">StartVgaCore</a>();</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="keywordtype">void</span> <a class="code" href="group__VideoInitGroup.html#ga0e413f66204b739fdcc8c675b9226d5b">VgaInitReq</a>(<span class="keyword">const</span> <a class="code" href="structsVmode.html">sVmode</a>* vmode);</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  </div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  </div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="keywordtype">void</span> <a class="code" href="group__Core1Group.html#gafe1c81149967385aa5284a90153c98b7">Core1Exec</a>(<span class="keywordtype">void</span> (*fnc)());</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  </div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> Bool <a class="code" href="group__Core1Group.html#ga8304edb5a4c5f234724d4e6deeead917">Core1Busy</a>();</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  </div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="keywordtype">void</span> <a class="code" href="group__Core1Group.html#ga180966e085ce28347b335bde3d3d09ca">Core1Wait</a>();</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  </div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  </div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="keywordtype">void</span> <a class="code" href="vga_8h.html#a906eb503fb409d6c3e9fa4489a8694aa">WaitVSync</a>();</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="preprocessor">#endif </span><span class="comment">// _VGA_H</span></div>
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<div class="ttc" id="agroup__Core1Group_html_ga180966e085ce28347b335bde3d3d09ca"><div class="ttname"><a href="group__Core1Group.html#ga180966e085ce28347b335bde3d3d09ca">Core1Wait</a></div><div class="ttdeci">void Core1Wait()</div><div class="ttdoc">Wait for core 1 finish executing remote function.</div><div class="ttdef"><b>Definition:</b> vga.cpp:1148</div></div>
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<div class="ttc" id="agroup__Core1Group_html_ga8304edb5a4c5f234724d4e6deeead917"><div class="ttname"><a href="group__Core1Group.html#ga8304edb5a4c5f234724d4e6deeead917">Core1Busy</a></div><div class="ttdeci">Bool Core1Busy()</div><div class="ttdoc">Check if core 1 is busy executing remote function.</div><div class="ttdef"><b>Definition:</b> vga.cpp:1141</div></div>
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<div class="ttc" id="agroup__Core1Group_html_gafe1c81149967385aa5284a90153c98b7"><div class="ttname"><a href="group__Core1Group.html#gafe1c81149967385aa5284a90153c98b7">Core1Exec</a></div><div class="ttdeci">void Core1Exec(void(*fnc)())</div><div class="ttdoc">Execute remote function on second core.</div><div class="ttdef"><b>Definition:</b> vga.cpp:1133</div></div>
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<div class="ttc" id="agroup__VideoInitGroup_html_ga0e413f66204b739fdcc8c675b9226d5b"><div class="ttname"><a href="group__VideoInitGroup.html#ga0e413f66204b739fdcc8c675b9226d5b">VgaInitReq</a></div><div class="ttdeci">void VgaInitReq(const sVmode *vmode)</div><div class="ttdoc">Request to initialize VGA videomode.</div><div class="ttdef"><b>Definition:</b> vga.cpp:1124</div></div>
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<div class="ttc" id="agroup__VideoInitGroup_html_ga635c059231b4b8c8bbf4162a9044fcd6"><div class="ttname"><a href="group__VideoInitGroup.html#ga635c059231b4b8c8bbf4162a9044fcd6">StartVgaCore</a></div><div class="ttdeci">void StartVgaCore()</div><div class="ttdoc">Start the VGA processing on core1.</div><div class="ttdef"><b>Definition:</b> vga.cpp:1115</div></div>
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<div class="ttc" id="astructsLayer_html"><div class="ttname"><a href="structsLayer.html">sLayer</a></div><div class="ttdoc">Layer screen descriptor (on change update SLAYER_* in define.h)</div><div class="ttdef"><b>Definition:</b> vga_layer.h:195</div></div>
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<div class="ttc" id="astructsVmode_html"><div class="ttname"><a href="structsVmode.html">sVmode</a></div><div class="ttdoc">Videomode table - used to setup video driver.</div><div class="ttdef"><b>Definition:</b> vga_vmode.h:119</div></div>
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<div class="ttc" id="avga_8h_html_a906eb503fb409d6c3e9fa4489a8694aa"><div class="ttname"><a href="vga_8h.html#a906eb503fb409d6c3e9fa4489a8694aa">WaitVSync</a></div><div class="ttdeci">void WaitVSync()</div><div class="ttdoc">Wait for VSync scanline.</div><div class="ttdef"><b>Definition:</b> vga.cpp:1154</div></div>
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