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liballegro: add png, jpeg image and ogg/vorbis audio file addons

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This commit is contained in:
David Kühling
2012-03-31 01:10:26 +02:00
parent 115dfe5f70
commit 088d3e7b1d
4 changed files with 317 additions and 32 deletions
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100
liballegro/patches/070-use-integer-vorbisdec.patch Normal file
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@@ -0,0 +1,100 @@
Index: allegro-4.4.2/cmake/FindVorbis.cmake
===================================================================
--- allegro-4.4.2.orig/cmake/FindVorbis.cmake 2012-03-30 23:59:08.149052027 +0200
+++ allegro-4.4.2/cmake/FindVorbis.cmake 2012-03-31 00:02:35.209665654 +0200
@@ -11,10 +11,10 @@
set(VORBIS_FIND_QUIETLY TRUE)
endif(VORBIS_INCLUDE_DIR)
find_path(OGG_INCLUDE_DIR ogg/ogg.h)
- find_path(VORBIS_INCLUDE_DIR vorbis/vorbisfile.h)
+ find_path(VORBIS_INCLUDE_DIR tremor/ivorbisfile.h)
find_library(OGG_LIBRARY NAMES ogg)
- find_library(VORBIS_LIBRARY NAMES vorbis)
- find_library(VORBISFILE_LIBRARY NAMES vorbisfile)
+ find_library(VORBIS_LIBRARY NAMES vorbisidec)
+ find_library(VORBISFILE_LIBRARY NAMES vorbisidec)
# Handle the QUIETLY and REQUIRED arguments and set VORBIS_FOUND
# to TRUE if all listed variables are TRUE.
include(FindPackageHandleStandardArgs)
Index: allegro-4.4.2/addons/logg/logg.h
===================================================================
--- allegro-4.4.2.orig/addons/logg/logg.h 2012-03-31 00:03:37.965850709 +0200
+++ allegro-4.4.2/addons/logg/logg.h 2012-03-31 00:05:19.486149188 +0200
@@ -6,7 +6,7 @@
#endif
#include <allegro.h>
-#include <vorbis/vorbisfile.h>
+#include <tremor/ivorbisfile.h>
#define OGG_PAGES_TO_BUFFER 2
Index: allegro-4.4.2/addons/logg/logg.c
===================================================================
--- allegro-4.4.2.orig/addons/logg/logg.c 2012-03-30 23:59:16.901078061 +0200
+++ allegro-4.4.2/addons/logg/logg.c 2012-03-31 00:52:21.628986644 +0200
@@ -14,6 +14,20 @@
static int logg_bufsize = 1024*64;
+/* convert samples from signed (tremor) to unsigned (allegro). from and to
+ * are allowed to refer to the same memory. */
+static void logg_from_signed(const char *from, char *to, int nbytes)
+{
+ const unsigned short *src = (const unsigned short*)from;
+ unsigned short *dst = (unsigned short*)to;
+ int i;
+
+ for (i = 0; i < nbytes; i += 2)
+ {
+ *dst++ = *src++ + 0x8000;
+ }
+}
+
SAMPLE* logg_load(const char* filename)
{
OggVorbis_File ovf;
@@ -32,7 +46,7 @@
return 0;
}
- if (ov_open_callbacks(file, &ovf, 0, 0, OV_CALLBACKS_DEFAULT) != 0) {
+ if (ov_open(file, &ovf, 0, 0) != 0) {
strncpy(allegro_error, "ov_open_callbacks failed.", ALLEGRO_ERROR_SIZE);
fclose(file);
free(buf);
@@ -57,9 +71,10 @@
samp->loop_end = samp->len;
samp->data = _al_malloc(sizeof(unsigned short) * samp->len * 2);
+ /* todo: need to convert to unsigned samples */
while ((numRead = ov_read(&ovf, buf, logg_bufsize,
- ENDIANNESS, 2, 0, &bitstream)) != 0) {
- memcpy((unsigned char*)samp->data+offset, buf, numRead);
+ &bitstream)) != 0) {
+ logg_from_signed(buf, (unsigned char*)samp->data+offset, numRead);
offset += numRead;
}
@@ -91,7 +106,7 @@
return 1;
}
- if (ov_open_callbacks(file, &s->ovf, 0, 0, OV_CALLBACKS_DEFAULT) != 0) {
+ if (ov_open(file, &s->ovf, 0, 0) != 0) {
strncpy(allegro_error, "ov_open_callbacks failed.", ALLEGRO_ERROR_SIZE);
fclose(file);
return 1;
@@ -119,9 +134,10 @@
memset(s->buf[page], 0, logg_bufsize);
while (read < logg_bufsize) {
+ /* todo: need to convert to unsigned samples */
int thisRead = ov_read(&s->ovf, s->buf[page]+read,
- logg_bufsize-read,
- ENDIANNESS, 2, 0, &bitstream);
+ logg_bufsize-read, &bitstream);
+ logg_from_signed(s->buf[page]+read,s->buf[page]+read,thisRead);
if (thisRead == 0) {
if (s->loop) {
ov_clear(&s->ovf);