82 flush_packet (gif_dest_ptr dinfo)  in flush_packet()  argument
85   if (dinfo->bytesinpkt > 0) {	/* never write zero-length packet */  in flush_packet()
86     dinfo->packetbuf[0] = (char) dinfo->bytesinpkt++;  in flush_packet()
87     if (JFWRITE(dinfo->pub.output_file, dinfo->packetbuf, dinfo->bytesinpkt)  in flush_packet()
88 	!= (size_t) dinfo->bytesinpkt)  in flush_packet()
89       ERREXIT(dinfo->cinfo, JERR_FILE_WRITE);  in flush_packet()
90     dinfo->bytesinpkt = 0;  in flush_packet()
96 #define CHAR_OUT(dinfo,c)  \  argument
97 	{ (dinfo)->packetbuf[++(dinfo)->bytesinpkt] = (char) (c);  \
98 	    if ((dinfo)->bytesinpkt >= 255)  \
99 	      flush_packet(dinfo);  \
106 output (gif_dest_ptr dinfo, int code)  in output()  argument
110   dinfo->cur_accum |= ((INT32) code) << dinfo->cur_bits;  in output()
111   dinfo->cur_bits += dinfo->n_bits;  in output()
113   while (dinfo->cur_bits >= 8) {  in output()
114     CHAR_OUT(dinfo, dinfo->cur_accum & 0xFF);  in output()
115     dinfo->cur_accum >>= 8;  in output()
116     dinfo->cur_bits -= 8;  in output()
144 compress_init (gif_dest_ptr dinfo, int i_bits)  in compress_init()  argument
148   dinfo->n_bits = i_bits;  in compress_init()
149   dinfo->maxcode = MAXCODE(dinfo->n_bits);  in compress_init()
150   dinfo->ClearCode = (1 << (i_bits - 1));  in compress_init()
151   dinfo->EOFCode = dinfo->ClearCode + 1;  in compress_init()
152   dinfo->code_counter = dinfo->ClearCode + 2;  in compress_init()
154   dinfo->bytesinpkt = 0;  in compress_init()
155   dinfo->cur_accum = 0;  in compress_init()
156   dinfo->cur_bits = 0;  in compress_init()
158   output(dinfo, dinfo->ClearCode);  in compress_init()
163 compress_pixel (gif_dest_ptr dinfo, int c)  in compress_pixel()  argument
169   output(dinfo, c);  in compress_pixel()
173   if (dinfo->code_counter < dinfo->maxcode) {  in compress_pixel()
174     dinfo->code_counter++;  in compress_pixel()
176     output(dinfo, dinfo->ClearCode);  in compress_pixel()
177     dinfo->code_counter = dinfo->ClearCode + 2;	/* reset the counter */  in compress_pixel()
183 compress_term (gif_dest_ptr dinfo)  in compress_term()  argument
187   output(dinfo, dinfo->EOFCode);  in compress_term()
189   if (dinfo->cur_bits > 0) {  in compress_term()
190     CHAR_OUT(dinfo, dinfo->cur_accum & 0xFF);  in compress_term()
193   flush_packet(dinfo);  in compress_term()
201 put_word (gif_dest_ptr dinfo, unsigned int w)  in put_word()  argument
204   putc(w & 0xFF, dinfo->pub.output_file);  in put_word()
205   putc((w >> 8) & 0xFF, dinfo->pub.output_file);  in put_word()
210 put_3bytes (gif_dest_ptr dinfo, int val)  in put_3bytes()  argument
213   putc(val, dinfo->pub.output_file);  in put_3bytes()
214   putc(val, dinfo->pub.output_file);  in put_3bytes()
215   putc(val, dinfo->pub.output_file);  in put_3bytes()
220 emit_header (gif_dest_ptr dinfo, int num_colors, JSAMPARRAY colormap)  in emit_header()  argument
225   int cshift = dinfo->cinfo->data_precision - 8;  in emit_header()
229     ERREXIT1(dinfo->cinfo, JERR_TOO_MANY_COLORS, num_colors);  in emit_header()
243   putc('G', dinfo->pub.output_file);  in emit_header()
244   putc('I', dinfo->pub.output_file);  in emit_header()
245   putc('F', dinfo->pub.output_file);  in emit_header()
246   putc('8', dinfo->pub.output_file);  in emit_header()
247   putc('7', dinfo->pub.output_file);  in emit_header()
248   putc('a', dinfo->pub.output_file);  in emit_header()
250   put_word(dinfo, (unsigned int) dinfo->cinfo->output_width);  in emit_header()
251   put_word(dinfo, (unsigned int) dinfo->cinfo->output_height);  in emit_header()
255   putc(FlagByte, dinfo->pub.output_file);  in emit_header()
256   putc(0, dinfo->pub.output_file); /* Background color index */  in emit_header()
257   putc(0, dinfo->pub.output_file); /* Reserved (aspect ratio in GIF89) */  in emit_header()
264 	if (dinfo->cinfo->out_color_space == JCS_RGB) {  in emit_header()
266 	  putc(GETJSAMPLE(colormap[0][i]) >> cshift, dinfo->pub.output_file);  in emit_header()
267 	  putc(GETJSAMPLE(colormap[1][i]) >> cshift, dinfo->pub.output_file);  in emit_header()
268 	  putc(GETJSAMPLE(colormap[2][i]) >> cshift, dinfo->pub.output_file);  in emit_header()
271 	  put_3bytes(dinfo, GETJSAMPLE(colormap[0][i]) >> cshift);  in emit_header()
275 	put_3bytes(dinfo, (i * 255 + (num_colors-1)/2) / (num_colors-1));  in emit_header()
279       put_3bytes(dinfo, 0);  in emit_header()
283   putc(',', dinfo->pub.output_file); /* separator */  in emit_header()
284   put_word(dinfo, 0);		/* left/top offset */  in emit_header()
285   put_word(dinfo, 0);  in emit_header()
286   put_word(dinfo, (unsigned int) dinfo->cinfo->output_width); /* image size */  in emit_header()
287   put_word(dinfo, (unsigned int) dinfo->cinfo->output_height);  in emit_header()
289   putc(0x00, dinfo->pub.output_file);  in emit_header()
291   putc(InitCodeSize, dinfo->pub.output_file);  in emit_header()
294   compress_init(dinfo, InitCodeSize+1);  in emit_header()
303 start_output_gif (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)  in start_output_gif()  argument
305   gif_dest_ptr dest = (gif_dest_ptr) dinfo;  in start_output_gif()
320 put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,  in put_pixel_rows()  argument
323   gif_dest_ptr dest = (gif_dest_ptr) dinfo;  in put_pixel_rows()
339 finish_output_gif (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)  in finish_output_gif()  argument
341   gif_dest_ptr dest = (gif_dest_ptr) dinfo;  in finish_output_gif()