Submit initial patch from FS#12176. Adds support for several new game music formats (AY, GBS, HES, KSS, SGC, VGM and VGZ) and replaces the current NSF and NSFE with a new implementation based on a port of the Game Music Emu library 'GME'. This first submit does not cover the full functionality provided by the author's original patch: Coleco-SGV is not supported, some GME-specific m3u-support has been removed and IRAM is not used yet. Further changes are very likely to follow this submit. Thanks to Mauricio Garrido.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30264 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 59 insertions, 0 deletions

diff --git a/apps/codecs/libgme/ay_cpu.c b/apps/codecs/libgme/ay_cpu.c
new file mode 100644
index 0000000..5fbfe7c
--- /dev/null
+++ b/apps/codecs/libgme/ay_cpu.c
@@ -0,0 +1,59 @@
+// Game_Music_Emu 0.6-pre. http://www.slack.net/~ant/
+
+#include "ay_emu.h"
+
+#include "blargg_endian.h"
+//#include "z80_cpu_log.h"
+
+/* Copyright (C) 2006-2008 Shay Green. This module is free software; you
+can redistribute it and/or modify it under the terms of the GNU Lesser
+General Public License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version. This
+module is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+details. You should have received a copy of the GNU Lesser General Public
+License along with this module; if not, write to the Free Software Foundation,
+Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
+
+#include "blargg_source.h"
+
+void cpu_out( struct Ay_Emu* this, cpu_time_t time, addr_t addr, int data )
+{
+	if ( (addr & 0xFF) == 0xFE )
+	{
+		check( !cpc_mode );
+		this->spectrum_mode = !this->cpc_mode;
+		
+		// beeper_mask and last_beeper are 0 if (cpc_mode || !beeper_output)
+		if ( (data &= this->beeper_mask) != this->last_beeper )
+		{
+			this->last_beeper = data;
+			int delta = -this->beeper_delta;
+			this->beeper_delta = delta;
+			struct Blip_Buffer* bb = this->beeper_output;
+			Blip_set_modified( bb );
+			Synth_offset( &this->apu.synth_, time, delta, bb );
+		}
+	}
+	else
+	{
+		cpu_out_( this, time, addr, data );
+	}
+}
+
+#define OUT_PORT( addr, data )  cpu_out( this, TIME(), addr, data )
+#define IN_PORT( addr )  0xFF // cpu in
+#define FLAT_MEM                mem
+
+#define CPU_BEGIN \
+bool run_cpu( struct Ay_Emu* this, cpu_time_t end_time ) \
+{\
+	struct Z80_Cpu* cpu = &this->cpu; \
+	Z80_set_end_time( cpu, end_time ); \
+	byte* const mem = this->mem.ram; // cache
+	
+	#include "z80_cpu_run.h"
+	
+	return warning;
+}