-vo gif - by Joey Parrish <joey@yunamusic.com>

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@6054 b3059339-0415-0410-9bf9-f77b7e298cf2

2 files changed, 343 insertions, 0 deletions

diff --git a/libvo/video_out.c b/libvo/video_out.c
index 200f7703e4..f681a43bc9 100644
--- a/libvo/video_out.c
+++ b/libvo/video_out.c
@@ -103,6 +103,9 @@ extern vo_functions_t video_out_dxr3;
 #ifdef HAVE_JPEG
 extern vo_functions_t video_out_jpeg;
 #endif
+#ifdef HAVE_GIF
+extern vo_functions_t video_out_gif89a;
+#endif
 #ifdef HAVE_VESA
 extern vo_functions_t video_out_vesa;
 #endif
@@ -170,6 +173,9 @@ vo_functions_t* video_out_drivers[] =
 #ifdef HAVE_JPEG
 	&video_out_jpeg,
 #endif
+#ifdef HAVE_GIF
+	&video_out_gif89a,
+#endif
         &video_out_null,
 //        &video_out_odivx,
         &video_out_pgm,
diff --git a/libvo/vo_gif89a.c b/libvo/vo_gif89a.c
new file mode 100644
index 0000000000..6ef117fc5c
--- /dev/null
+++ b/libvo/vo_gif89a.c
@@ -0,0 +1,337 @@
+/* 
+ * vo_gif89a.c  Generate gif89a output in file out.gif
+ *
+ * Originally based on vo_png.c
+ *
+ * Stolen (C) 2002 by GifWhore <joey@yunamusic.com>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "config.h"
+#include "video_out.h"
+#include "video_out_internal.h"
+
+#include "../postproc/rgb2rgb.h"
+
+#include <gif_lib.h>
+
+#define GIFWHORE_version 0.90
+
+LIBVO_EXTERN (gif89a)
+
+static vo_info_t vo_info = 
+{
+	"GIF89a (out.gif)",
+	"gif89a",
+	"GifWhore <joey@yunamusic.com>",
+	""
+};
+
+extern int verbose;
+extern int vo_config_count;
+
+static int image_width;
+static int image_height;
+static int image_format;
+static uint8_t *image_data=NULL;
+static unsigned int scale_srcW = 0, scale_srcH = 0;
+
+static int reverse_map = 0;
+static unsigned char framenum = 0;
+static int gif_frameskip;
+static int gif_framedelay;
+static int target_fps = 0;
+
+GifFileType *newgif=NULL;
+
+/*
+ * TODO
+ * OSD!!!
+ */
+
+static uint32_t config
+	(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, 
+		uint32_t fullscreen, char *title, uint32_t format, const vo_tune_info_t *info) {
+    char filename[] = "out.gif";
+    ColorMapObject *Cmap;
+    char LB[] = {
+	'N','E','T','S',
+	'C','A','P','E',
+	'2','.','0' };
+    char LB2[] = { 1, 0x00, 0x00 };
+
+    if (target_fps == 0) target_fps = 5;
+    gif_frameskip = (vo_fps + 0.25) / target_fps;
+    gif_framedelay = 100 / target_fps;
+    
+    if ((width != d_width) || (height != d_height)) {
+	    image_width = (d_width + 7) & ~7;
+	    image_height = d_height;
+	    scale_srcW = width;
+	    scale_srcH = height;
+	    SwScale_Init();
+    } else {
+	    image_width = width;
+	    image_height = height;
+    }
+    image_format = format;
+
+    Cmap = MakeMapObject(256, NULL);
+
+    switch(format) {
+	case IMGFMT_BGR32:
+	case IMGFMT_BGR24:
+	     reverse_map = 1;
+	break;     
+	case IMGFMT_RGB32:
+	case IMGFMT_RGB24:
+	break;     
+	case IMGFMT_IYUV:
+	case IMGFMT_I420:
+	case IMGFMT_YV12:
+	     reverse_map = 1;
+	     yuv2rgb_init(24, MODE_RGB);
+	     image_data = malloc(image_width*image_height*3);
+	break;
+	default:
+	     return 1;     
+    }
+
+    if (vo_config_count > 0)
+        return 0;
+    
+    EGifSetGifVersion("89a");
+    newgif = EGifOpenFileName(filename, 0);
+    if (newgif == NULL)
+    {
+	    fprintf(stderr, "error opening file for output.\n");
+	    return(1);
+    }
+    EGifPutScreenDesc(newgif, image_width, image_height, 256, 0, Cmap);
+    EGifPutExtensionFirst(newgif, 0xFF, 11, LB);
+    EGifPutExtensionLast(newgif, 0, 3, LB2);
+    
+    return 0;
+}
+
+static const vo_info_t* get_info(void)
+{
+    return &vo_info;
+}
+
+static uint32_t draw_frame(uint8_t * src[])
+{
+  uint8_t *use_data;
+  ColorMapObject *Cmap;
+  uint8_t Colors[256 * 3];
+  int z;
+  char CB[] = { (char)(gif_framedelay >> 8), (char)(gif_framedelay & 0xff), 0, 0};
+
+  if ((framenum++ % gif_frameskip)) return(0);
+  
+  if ((image_format == IMGFMT_BGR32) || (image_format == IMGFMT_RGB32))
+  {
+    rgb32to24(src[0], image_data, image_width * image_height * 4);
+    src[0] = image_data;
+  }
+
+  Cmap = MakeMapObject(256, NULL);
+  use_data = (uint8_t *)malloc(image_width * image_height);
+  if (gif_reduce(image_width, image_height, src[0], use_data, Colors)) return(0);
+  
+  if (reverse_map)
+  {
+    for (z = 0; z < 256; z++) {
+      Cmap->Colors[z].Blue = Colors[(z * 3) + 0];
+      Cmap->Colors[z].Green = Colors[(z * 3) + 1];
+      Cmap->Colors[z].Red = Colors[(z * 3) + 2];
+    }
+  }
+  else
+  {
+    for (z = 0; z < 256; z++) {
+      Cmap->Colors[z].Red = Colors[(z * 3) + 0];
+      Cmap->Colors[z].Green = Colors[(z * 3) + 1];
+      Cmap->Colors[z].Blue = Colors[(z * 3) + 2];
+    }
+  }
+  
+  EGifPutExtension(newgif, 0xF9, 0x04, CB);
+  EGifPutImageDesc(newgif, 0, 0, image_width, image_height, 0, Cmap);
+  EGifPutLine(newgif, use_data, image_width * image_height);
+  FreeMapObject(Cmap);
+  free(use_data);
+
+  return (0);
+}
+
+static void draw_osd(void)
+{
+}
+
+static void flip_page (void)
+{
+  uint8_t *use_data;
+  ColorMapObject *Cmap;
+  uint8_t Colors[256 * 3];
+  int z;
+  char CB[] = { (char)(gif_framedelay >> 8), (char)(gif_framedelay & 0xff), 0, 0};
+  
+  if ((image_format == IMGFMT_YV12) || (image_format == IMGFMT_IYUV) || (image_format == IMGFMT_I420)) {
+
+    if ((framenum++ % gif_frameskip)) return;
+
+    Cmap = MakeMapObject(256, NULL);
+    use_data = (uint8_t *)malloc(image_width * image_height);
+    if (gif_reduce(image_width, image_height, image_data, use_data, Colors)) return;
+
+    if (reverse_map)
+    {
+      for (z = 0; z < 256; z++) {
+        Cmap->Colors[z].Blue = Colors[(z * 3) + 0];
+        Cmap->Colors[z].Green = Colors[(z * 3) + 1];
+        Cmap->Colors[z].Red = Colors[(z * 3) + 2];
+      }
+    }
+    else
+    {
+      for (z = 0; z < 256; z++) {
+        Cmap->Colors[z].Red = Colors[(z * 3) + 0];
+        Cmap->Colors[z].Green = Colors[(z * 3) + 1];
+        Cmap->Colors[z].Blue = Colors[(z * 3) + 2];
+      }
+    }
+  
+    EGifPutExtension(newgif, 0xF9, 0x04, CB);
+    EGifPutImageDesc(newgif, 0, 0, image_width, image_height, 0, Cmap);
+    EGifPutLine(newgif, use_data, image_width * image_height);
+    FreeMapObject(Cmap);
+    free(use_data);
+  }
+}
+
+static uint32_t draw_slice( uint8_t *src[],int stride[],int w,int h,int x,int y )
+{
+  /* hack: swap planes for I420 ;) -- alex */
+  if ((image_format == IMGFMT_IYUV) || (image_format == IMGFMT_I420))
+  {
+    uint8_t *src_i420[3];
+    
+    src_i420[0] = src[0];
+    src_i420[1] = src[2];
+    src_i420[2] = src[1];
+    src = src_i420;
+  }
+
+  if (scale_srcW) {
+    uint8_t *dst[3] = {image_data, NULL, NULL};
+    SwScale_YV12slice(src,stride,y,h,
+		      dst, image_width*3, 24,
+		      scale_srcW, scale_srcH, image_width, image_height);
+  } else {
+    uint8_t *dst = image_data + (image_width * y + x) * 3;
+    yuv2rgb(dst,src[0],src[1],src[2],w,h,image_width*3,stride[0],stride[1]);
+  }
+  return 0;
+}
+
+static uint32_t
+query_format(uint32_t format)
+{
+    switch(format){
+    case IMGFMT_IYUV:
+    case IMGFMT_I420:
+    case IMGFMT_YV12:
+    case IMGFMT_RGB|32:
+    case IMGFMT_BGR|32:
+    case IMGFMT_RGB|24:
+    case IMGFMT_BGR|24:
+        return 1 | VFCAP_SWSCALE | VFCAP_TIMER | VFCAP_ACCEPT_STRIDE;
+    }
+    return 0;
+}
+
+static void
+uninit(void)
+{
+	char temp[256];
+	
+	if (image_data) { free(image_data); image_data=NULL; }
+
+	if (vo_config_count > 0) {
+		sprintf(temp, "gifwhore v%2.2f (c) %s\r\n",
+			GIFWHORE_version, "joey@yunamusic.com");
+		EGifPutComment(newgif, temp);
+		EGifCloseFile(newgif);
+	}
+}
+
+
+static void check_events(void)
+{
+}
+
+int gif_reduce(int width, int height,
+               unsigned char *source,
+               unsigned char *destination,
+               unsigned char *palette)
+{
+	GifColorType cmap[256];
+	unsigned char Ra[width * height];
+	unsigned char Ga[width * height];
+	unsigned char Ba[width * height];
+	unsigned char *R, *G, *B;
+	int Size = 256;
+	int i;
+
+	R = Ra; G = Ga; B = Ba;
+	for (i = 0; i < width * height; i++)
+	{
+		*R++ = *source++;
+		*G++ = *source++;
+		*B++ = *source++;
+	}
+	
+	R = Ra; G = Ga; B = Ba;
+	if (QuantizeBuffer(width, height, &Size,
+			R, G, B,
+			destination, cmap) == GIF_ERROR)
+	{
+		fprintf(stderr, "vo_gif89a: Quantize failed!\n");
+		return(-1);
+	}
+	
+	for (i = 0; i < Size; i++)
+	{
+		*palette++ = cmap[i].Red;
+		*palette++ = cmap[i].Green;
+		*palette++ = cmap[i].Blue;
+	}
+	
+	return(0);
+}
+
+static uint32_t preinit(const char *arg)
+{
+  int i = 0;
+  if (arg) i = atoi(arg);
+  if (i > vo_fps) i = vo_fps;
+  if (i < 1) i = 5;
+  target_fps = i;
+  return 0;
+}
+
+static uint32_t control(uint32_t request, void *data, ...)
+{
+  switch (request) {
+  case VOCTRL_QUERY_FORMAT:
+    return query_format(*((uint32_t*)data));
+  }
+  return VO_NOTIMPL;
+}
+