fw_builder/bootsplash/mng.c

/*
 *	fbmngplay - fb console MNG player.
 *	(c) 2001-2002 by Stefan Reinauer, <stepan@suse.de>
 *
 *	This program is based on mngplay, part of libmng, written and (C) by
 *	Ralph Giles <giles@ashlu.bc.ca>
 *
 *	This program my be redistributed under the terms of the
 *	GNU General Public Licence, version 2, or at your preference,
 *	any later version.
 */

#include <unistd.h>
#include <sys/time.h>

#include "fbmngplay.h"
#include "console.h"
#include "mng.h"

mngstuff *mng;
unsigned char *bufferstream;
unsigned long bufferpos = 0, buffersize = 0;

/* 
 * callbacks for the mng decoder 
 */

/* memory allocation; data must be zeroed */
mng_ptr mngalloc(mng_uint32 size)
{
	return (mng_ptr) calloc(1, size);
}

/* memory deallocation */
void mngfree(mng_ptr p, mng_uint32 size)
{
	free(p);
	return;
}

mng_bool mngopenstream(mng_handle mng)
{
	mngstuff *mymng;

	/* look up our stream struct */
	mymng = (mngstuff *) mng_get_userdata(mng);

	/* open the file */
	mymng->file = fopen(mymng->filename, "rb");
	if (mymng->file == NULL) {
		fprintf(stderr, "unable to open '%s'\n", mymng->filename);
		run = 0;
		return MNG_FALSE;
	}

	if (buffered) {
		unsigned long len;
		fseek(mymng->file, 0, SEEK_END);
		len = ftell(mymng->file);
		rewind(mymng->file);
		bufferstream = malloc(len);
		if (!bufferstream) {
			/* Not enough memory for buffers 
			 * -> we go back to unbuffered mode
			 */
			printf("Reverted to non buffered mode.\n");
			buffered = 0;
			return MNG_TRUE;
		}
		buffersize = len;
		fread(bufferstream, 1, len, mymng->file);
		bufferpos = 0;
		fclose(mymng->file);
		mymng->file = NULL;
	}

	return MNG_TRUE;
}

mng_bool mngclosestream(mng_handle mng)
{
	mngstuff *mymng;

	/* look up our stream struct */
	mymng = (mngstuff *) mng_get_userdata(mng);

	/* close the file */
	if (mymng->file)
		fclose(mymng->file);
	mymng->file = NULL;	/* for safety */

	if (bufferstream) {
		free(bufferstream);
		bufferstream = 0;
		buffersize = 0;
		bufferpos = 0;
	}
	return MNG_TRUE;
}

/* feed data to the decoder */
mng_bool mngreadstream(mng_handle mng, mng_ptr buffer,
		       mng_uint32 size, mng_uint32 * bytesread)
{
	mngstuff *mymng;

	/* look up our stream struct */
	mymng = (mngstuff *) mng_get_userdata(mng);
	if (!buffered) {
		/* read the requested amount of data from the file */
		*bytesread = fread(buffer, 1, size, mymng->file);
	} else {
		*bytesread = (buffersize - bufferpos) <
		    size ? (buffersize - bufferpos) : size;
		memcpy(buffer, bufferstream + bufferpos, *bytesread);
		bufferpos += (*bytesread);
	}
	return MNG_TRUE;
}

mng_bool mnggetbackgroundbuffer(mng_handle mng)
{
	unsigned char *background, *src;
	mngstuff *mymng = mng_get_userdata(mng);
	mng_uint32 width = mymng->width, height = mymng->height;
	int bytes = (mymng->fbbpp >> 3);

	if (mymng->background)
		return MNG_TRUE;

	/* If we're not on the right terminal, don't 
	 * initialize background yet.
	 */
	if (sconly && current_console() != start_console)
		return MNG_FALSE;

	background = (unsigned char *) malloc(width * height * bytes);
	if (background == NULL) {
		fprintf(stderr, "could not allocate background buffer.\n");
		exit(0);
	}

	mymng->background = background;
	src =
	    mymng->display + (mymng->fbwidth * mymng->fby +
			      mymng->fbx) * bytes;

	while (height--) {
		memcpy(background, src, width * bytes);
		background += width * bytes;
		src += mymng->fbrow;
	}

	return MNG_TRUE;
}

/* the header's been read. set up the display stuff */
mng_bool mngprocessheader(mng_handle mng,
			  mng_uint32 width, mng_uint32 height)
{
	mngstuff *mymng;
	unsigned char *copybuffer;

	mymng = (mngstuff *) mng_get_userdata(mng);
	mymng->width = width;
	mymng->height = height;

	copybuffer = (unsigned char *) malloc(width * height * 4);
	if (copybuffer == NULL) {
		fprintf(stderr, "could not allocate copy buffer.\n");
		exit(0);
	}
	mymng->copybuffer = copybuffer;

	/* Try to get background buffer */
	mnggetbackgroundbuffer(mng);

	/* tell the mng decoder about our bit-depth choice */
	/* FIXME: this works on intel. is it correct in general? */
	mng_set_canvasstyle(mng, MNG_CANVAS_BGRA8);

	return MNG_TRUE;
}

/* return a row pointer for the decoder to fill */
mng_ptr mnggetcanvasline(mng_handle mng, mng_uint32 line)
{
	mngstuff *mymng;
	mng_ptr row;

	/* dereference our structure */
	mymng = (mngstuff *) mng_get_userdata(mng);

	/* we assume any necessary locking has happened 
	   outside, in the frame level code */
	row = mymng->copybuffer + mymng->width * 4 * line;

	return (row);
}

/* timer */
mng_uint32 mnggetticks(mng_handle mng)
{
	mng_uint32 ticks;
	struct timeval tv;
	struct timezone tz;

	gettimeofday(&tv, &tz);
	ticks = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);

	return (ticks);
}

static inline void copyline(unsigned char *dest, unsigned char *src,
			    unsigned char *background, mngstuff * mymng)
{
	// BGRA8        
	unsigned int i = mymng->width;
	unsigned int fr, fg, fb, br, bg, bb, r, g, b, a;
	unsigned short output, input;

	while (i--) {
		fb = *src++;
		fg = *src++;
		fr = *src++;

		a = *src++;
		a = a * mymng->alpha / 100;
		switch (mymng->fbbpp) {
		case 16:
			input = *((unsigned short *) background)++;

			br = (input >> mng->fbredo) << (8 - mng->fbredl);
			bg = (input >> mng->fbgreeno) << (8 -
							  mng->fbgreenl);
			bb = (input >> mng->fbblueo) << (8 - mng->fbbluel);
			br &= 0xf8;
			bg &= 0xfc;
			bb &= 0xff;
#if 0
			br = (input >> 8) & 0xf8;
			bg = (input >> 3) & 0xfc;
			bb = input << 3 & 0xff;
#endif
			break;
		case 24:
			bb = *background++;
			bg = *background++;
			br = *background++;
			break;
		case 32:
			bb = *background++;
			bg = *background++;
			br = *background++;
			background++;
			break;
		default:
			br = 0;
			bg = 0;
			bb = 0;
			printf("depth not supported.\n");
			run = 0;
			break;
		}

		r = ((fr * a) + (br * (0x100 - a))) >> 8;
		g = ((fg * a) + (bg * (0x100 - a))) >> 8;
		b = ((fb * a) + (bb * (0x100 - a))) >> 8;

		switch (mymng->fbbpp) {
		case 16:
			// dumb 24->16 bit conversion.
			r >>= (8 - mng->fbredl);
			g >>= (8 - mng->fbgreenl);
			b >>= (8 - mng->fbbluel);

			output =
			    (r << mng->fbredo) | (g << mng->
						  fbgreeno) | (b << mng->
							       fbblueo);

			*((unsigned short *) dest)++ = output;
			break;
		case 24:
			*dest++ = b;
			*dest++ = g;
			*dest++ = r;
			break;
		case 32:
			*dest++ = b;
			*dest++ = g;
			*dest++ = r;
			dest++;
			break;
		default:
			break;
		}
	}
}

mng_bool mngrefresh(mng_handle mng, mng_uint32 x, mng_uint32 y,
		    mng_uint32 w, mng_uint32 h)
{
	mngstuff *mymng = mng_get_userdata(mng);
	unsigned char *background;
	unsigned char *dest, *src;
	int bytes = (mymng->fbbpp >> 3);

	if (sconly && current_console() != start_console)
		return MNG_TRUE;

	/* When we read the header, we might still
	 * have been on a different console
	 */

	if (!(mymng->background))
		mnggetbackgroundbuffer(mng);

	background = mymng->background;

	dest =
	    mymng->display + (mymng->fby * mymng->fbwidth +
			      mymng->fbx) * bytes;
	src = mymng->copybuffer;

	/* refresh the screen with the new frame */
	while (h-- > 0) {
		copyline(dest, src, background, mymng);

		dest += mymng->fbrow;
		background += mymng->width * bytes;
		/* 4 bytes per pixel due to RGBA */
		src += 4 * mymng->width;
	}

	/* remove traces in alpha transparent pictures. */
	memset(mymng->copybuffer, 0, 4 * mymng->width * mymng->height);

	return MNG_TRUE;
}

/* interframe delay callback */
mng_bool mngsettimer(mng_handle mng, mng_uint32 msecs)
{
	mngstuff *mymng;

	/* look up our stream struct */
	mymng = (mngstuff *) mng_get_userdata(mng);

	/* set the timer for when the decoder wants to be woken */
	mymng->delay = msecs;

	return MNG_TRUE;
}

mng_bool mngerror(mng_handle mng, mng_int32 code, mng_int8 severity,
		  mng_chunkid chunktype, mng_uint32 chunkseq,
		  mng_int32 extra1, mng_int32 extra2, mng_pchar text)
{
	mngstuff *mymng;
	char chunk[5];

	/* dereference our data so we can get the filename */
	mymng = (mngstuff *) mng_get_userdata(mng);
	/* pull out the chuck type as a string */
	// FIXME: does this assume unsigned char?
	chunk[0] = (char) ((chunktype >> 24) & 0xFF);
	chunk[1] = (char) ((chunktype >> 16) & 0xFF);
	chunk[2] = (char) ((chunktype >> 8) & 0xFF);
	chunk[3] = (char) ((chunktype) & 0xFF);
	chunk[4] = '\0';

	/* output the error */
	fprintf(stderr, "error playing '%s' chunk %s (%d):\n",
		mymng->filename, chunk, chunkseq);
	fprintf(stderr, "%s\n", text);

	return 0;
}

int mngquit(mng_handle mng)
{
	mngstuff *mymng;

	/* dereference our data so we can free it */
	mymng = (mngstuff *) mng_get_userdata(mng);

	/* cleanup. this will call mymngclosestream */
	mng_cleanup(&mng);

	/* free our data */
	free(mymng);

	exit(0);
}

void cleanup(void)
{
	mngquit(mng->mng);
	exit(0);
}

void restore_area(void)
{
	int height, width;
	unsigned char *dest, *background;

	if (sconly && current_console() != start_console)
		return;

	/* when we didn't manage to get a background until 
	 * now, we don't have anything to restore anyways.
	 */

	if (!(mng->background))
		return;

	background = mng->background;
	height = mng->height;
	width = mng->width;
	dest = mng->display + ((mng->fbwidth * mng->fby + mng->fbx) *
			       (mng->fbbpp >> 3));

	while (height--) {
		memcpy(dest, background, width * (mng->fbbpp >> 3));
		background += width * (mng->fbbpp >> 3);
		dest += mng->fbrow;
	}
}
1	/*
2	* fbmngplay - fb console MNG player.
3	* (c) 2001-2002 by Stefan Reinauer, <stepan@suse.de>
4	*
5	* This program is based on mngplay, part of libmng, written and (C) by
6	* Ralph Giles <giles@ashlu.bc.ca>
7	*
8	* This program my be redistributed under the terms of the
9	* GNU General Public Licence, version 2, or at your preference,
10	* any later version.
11	*/
12
13	#include <unistd.h>
14	#include <sys/time.h>
15
16	#include "fbmngplay.h"
17	#include "console.h"
18	#include "mng.h"
19
20	mngstuff *mng;
21	unsigned char *bufferstream;
22	unsigned long bufferpos = 0, buffersize = 0;
23
24	/*
25	* callbacks for the mng decoder
26	*/
27
28	/* memory allocation; data must be zeroed */
29	mng_ptr mngalloc(mng_uint32 size)
30	{
31	return (mng_ptr) calloc(1, size);
32	}
33
34	/* memory deallocation */
35	void mngfree(mng_ptr p, mng_uint32 size)
36	{
37	free(p);
38	return;
39	}
40
41	mng_bool mngopenstream(mng_handle mng)
42	{
43	mngstuff *mymng;
44
45	/* look up our stream struct */
46	mymng = (mngstuff *) mng_get_userdata(mng);
47
48	/* open the file */
49	mymng->file = fopen(mymng->filename, "rb");
50	if (mymng->file == NULL) {
51	fprintf(stderr, "unable to open '%s'\n", mymng->filename);
52	run = 0;
53	return MNG_FALSE;
54	}
55
56	if (buffered) {
57	unsigned long len;
58	fseek(mymng->file, 0, SEEK_END);
59	len = ftell(mymng->file);
60	rewind(mymng->file);
61	bufferstream = malloc(len);
62	if (!bufferstream) {
63	/* Not enough memory for buffers
64	* -> we go back to unbuffered mode
65	*/
66	printf("Reverted to non buffered mode.\n");
67	buffered = 0;
68	return MNG_TRUE;
69	}
70	buffersize = len;
71	fread(bufferstream, 1, len, mymng->file);
72	bufferpos = 0;
73	fclose(mymng->file);
74	mymng->file = NULL;
75	}
76
77	return MNG_TRUE;
78	}
79
80	mng_bool mngclosestream(mng_handle mng)
81	{
82	mngstuff *mymng;
83
84	/* look up our stream struct */
85	mymng = (mngstuff *) mng_get_userdata(mng);
86
87	/* close the file */
88	if (mymng->file)
89	fclose(mymng->file);
90	mymng->file = NULL; /* for safety */
91
92	if (bufferstream) {
93	free(bufferstream);
94	bufferstream = 0;
95	buffersize = 0;
96	bufferpos = 0;
97	}
98	return MNG_TRUE;
99	}
100
101	/* feed data to the decoder */
102	mng_bool mngreadstream(mng_handle mng, mng_ptr buffer,
103	mng_uint32 size, mng_uint32 * bytesread)
104	{
105	mngstuff *mymng;
106
107	/* look up our stream struct */
108	mymng = (mngstuff *) mng_get_userdata(mng);
109	if (!buffered) {
110	/* read the requested amount of data from the file */
111	*bytesread = fread(buffer, 1, size, mymng->file);
112	} else {
113	*bytesread = (buffersize - bufferpos) <
114	size ? (buffersize - bufferpos) : size;
115	memcpy(buffer, bufferstream + bufferpos, *bytesread);
116	bufferpos += (*bytesread);
117	}
118	return MNG_TRUE;
119	}
120
121	mng_bool mnggetbackgroundbuffer(mng_handle mng)
122	{
123	unsigned char background, src;
124	mngstuff *mymng = mng_get_userdata(mng);
125	mng_uint32 width = mymng->width, height = mymng->height;
126	int bytes = (mymng->fbbpp >> 3);
127
128	if (mymng->background)
129	return MNG_TRUE;
130
131	/* If we're not on the right terminal, don't
132	* initialize background yet.
133	*/
134	if (sconly && current_console() != start_console)
135	return MNG_FALSE;
136
137	background = (unsigned char ) malloc(width height * bytes);
138	if (background == NULL) {
139	fprintf(stderr, "could not allocate background buffer.\n");
140	exit(0);
141	}
142
143	mymng->background = background;
144	src =
145	mymng->display + (mymng->fbwidth * mymng->fby +
146	mymng->fbx) * bytes;
147
148	while (height--) {
149	memcpy(background, src, width * bytes);
150	background += width * bytes;
151	src += mymng->fbrow;
152	}
153
154	return MNG_TRUE;
155	}
156
157	/* the header's been read. set up the display stuff */
158	mng_bool mngprocessheader(mng_handle mng,
159	mng_uint32 width, mng_uint32 height)
160	{
161	mngstuff *mymng;
162	unsigned char *copybuffer;
163
164	mymng = (mngstuff *) mng_get_userdata(mng);
165	mymng->width = width;
166	mymng->height = height;
167
168	copybuffer = (unsigned char ) malloc(width height * 4);
169	if (copybuffer == NULL) {
170	fprintf(stderr, "could not allocate copy buffer.\n");
171	exit(0);
172	}
173	mymng->copybuffer = copybuffer;
174
175	/* Try to get background buffer */
176	mnggetbackgroundbuffer(mng);
177
178	/* tell the mng decoder about our bit-depth choice */
179	/* FIXME: this works on intel. is it correct in general? */
180	mng_set_canvasstyle(mng, MNG_CANVAS_BGRA8);
181
182	return MNG_TRUE;
183	}
184
185	/* return a row pointer for the decoder to fill */
186	mng_ptr mnggetcanvasline(mng_handle mng, mng_uint32 line)
187	{
188	mngstuff *mymng;
189	mng_ptr row;
190
191	/* dereference our structure */
192	mymng = (mngstuff *) mng_get_userdata(mng);
193
194	/* we assume any necessary locking has happened
195	outside, in the frame level code */
196	row = mymng->copybuffer + mymng->width * 4 * line;
197
198	return (row);
199	}
200
201	/* timer */
202	mng_uint32 mnggetticks(mng_handle mng)
203	{
204	mng_uint32 ticks;
205	struct timeval tv;
206	struct timezone tz;
207
208	gettimeofday(&tv, &tz);
209	ticks = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
210
211	return (ticks);
212	}
213
214	static inline void copyline(unsigned char dest, unsigned char src,
215	unsigned char background, mngstuff mymng)
216	{
217	// BGRA8
218	unsigned int i = mymng->width;
219	unsigned int fr, fg, fb, br, bg, bb, r, g, b, a;
220	unsigned short output, input;
221
222	while (i--) {
223	fb = *src++;
224	fg = *src++;
225	fr = *src++;
226
227	a = *src++;
228	a = a * mymng->alpha / 100;
229	switch (mymng->fbbpp) {
230	case 16:
231	input = ((unsigned short ) background)++;
232
233	br = (input >> mng->fbredo) << (8 - mng->fbredl);
234	bg = (input >> mng->fbgreeno) << (8 -
235	mng->fbgreenl);
236	bb = (input >> mng->fbblueo) << (8 - mng->fbbluel);
237	br &= 0xf8;
238	bg &= 0xfc;
239	bb &= 0xff;
240	#if 0
241	br = (input >> 8) & 0xf8;
242	bg = (input >> 3) & 0xfc;
243	bb = input << 3 & 0xff;
244	#endif
245	break;
246	case 24:
247	bb = *background++;
248	bg = *background++;
249	br = *background++;
250	break;
251	case 32:
252	bb = *background++;
253	bg = *background++;
254	br = *background++;
255	background++;
256	break;
257	default:
258	br = 0;
259	bg = 0;
260	bb = 0;
261	printf("depth not supported.\n");
262	run = 0;
263	break;
264	}
265
266	r = ((fr * a) + (br * (0x100 - a))) >> 8;
267	g = ((fg * a) + (bg * (0x100 - a))) >> 8;
268	b = ((fb * a) + (bb * (0x100 - a))) >> 8;
269
270	switch (mymng->fbbpp) {
271	case 16:
272	// dumb 24->16 bit conversion.
273	r >>= (8 - mng->fbredl);
274	g >>= (8 - mng->fbgreenl);
275	b >>= (8 - mng->fbbluel);
276
277	output =
278	(r << mng->fbredo) \| (g << mng->
279	fbgreeno) \| (b << mng->
280	fbblueo);
281
282	((unsigned short ) dest)++ = output;
283	break;
284	case 24:
285	*dest++ = b;
286	*dest++ = g;
287	*dest++ = r;
288	break;
289	case 32:
290	*dest++ = b;
291	*dest++ = g;
292	*dest++ = r;
293	dest++;
294	break;
295	default:
296	break;
297	}
298	}
299	}
300
301	mng_bool mngrefresh(mng_handle mng, mng_uint32 x, mng_uint32 y,
302	mng_uint32 w, mng_uint32 h)
303	{
304	mngstuff *mymng = mng_get_userdata(mng);
305	unsigned char *background;
306	unsigned char dest, src;
307	int bytes = (mymng->fbbpp >> 3);
308
309	if (sconly && current_console() != start_console)
310	return MNG_TRUE;
311
312	/* When we read the header, we might still
313	* have been on a different console
314	*/
315
316	if (!(mymng->background))
317	mnggetbackgroundbuffer(mng);
318
319	background = mymng->background;
320
321	dest =
322	mymng->display + (mymng->fby * mymng->fbwidth +
323	mymng->fbx) * bytes;
324	src = mymng->copybuffer;
325
326	/* refresh the screen with the new frame */
327	while (h-- > 0) {
328	copyline(dest, src, background, mymng);
329
330	dest += mymng->fbrow;
331	background += mymng->width * bytes;
332	/* 4 bytes per pixel due to RGBA */
333	src += 4 * mymng->width;
334	}
335
336	/* remove traces in alpha transparent pictures. */
337	memset(mymng->copybuffer, 0, 4 * mymng->width * mymng->height);
338
339	return MNG_TRUE;
340	}
341
342	/* interframe delay callback */
343	mng_bool mngsettimer(mng_handle mng, mng_uint32 msecs)
344	{
345	mngstuff *mymng;
346
347	/* look up our stream struct */
348	mymng = (mngstuff *) mng_get_userdata(mng);
349
350	/* set the timer for when the decoder wants to be woken */
351	mymng->delay = msecs;
352
353	return MNG_TRUE;
354	}
355
356	mng_bool mngerror(mng_handle mng, mng_int32 code, mng_int8 severity,
357	mng_chunkid chunktype, mng_uint32 chunkseq,
358	mng_int32 extra1, mng_int32 extra2, mng_pchar text)
359	{
360	mngstuff *mymng;
361	char chunk[5];
362
363	/* dereference our data so we can get the filename */
364	mymng = (mngstuff *) mng_get_userdata(mng);
365	/* pull out the chuck type as a string */
366	// FIXME: does this assume unsigned char?
367	chunk[0] = (char) ((chunktype >> 24) & 0xFF);
368	chunk[1] = (char) ((chunktype >> 16) & 0xFF);
369	chunk[2] = (char) ((chunktype >> 8) & 0xFF);
370	chunk[3] = (char) ((chunktype) & 0xFF);
371	chunk[4] = '\0';
372
373	/* output the error */
374	fprintf(stderr, "error playing '%s' chunk %s (%d):\n",
375	mymng->filename, chunk, chunkseq);
376	fprintf(stderr, "%s\n", text);
377
378	return 0;
379	}
380
381	int mngquit(mng_handle mng)
382	{
383	mngstuff *mymng;
384
385	/* dereference our data so we can free it */
386	mymng = (mngstuff *) mng_get_userdata(mng);
387
388	/* cleanup. this will call mymngclosestream */
389	mng_cleanup(&mng);
390
391	/* free our data */
392	free(mymng);
393
394	exit(0);
395	}
396
397	void cleanup(void)
398	{
399	mngquit(mng->mng);
400	exit(0);
401	}
402
403	void restore_area(void)
404	{
405	int height, width;
406	unsigned char dest, background;
407
408	if (sconly && current_console() != start_console)
409	return;
410
411	/* when we didn't manage to get a background until
412	* now, we don't have anything to restore anyways.
413	*/
414
415	if (!(mng->background))
416	return;
417
418	background = mng->background;
419	height = mng->height;
420	width = mng->width;
421	dest = mng->display + ((mng->fbwidth * mng->fby + mng->fbx) *
422	(mng->fbbpp >> 3));
423
424	while (height--) {
425	memcpy(dest, background, width * (mng->fbbpp >> 3));
426	background += width * (mng->fbbpp >> 3);
427	dest += mng->fbrow;
428	}
429	}