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app/retro_frontend: simple sample rate conversion

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Simple conversion using a nearest-sample method on an additional
thread.

The core output buffer occasionally underruns as it lacks
synchronization, but this keeps latency down.

Fix #60
This commit is contained in:
Emery Hemingway
2016-12-18 18:56:49 +01:00
committed by Norman Feske
parent 6b7340ef23
commit b445dba833
7 changed files with 367 additions and 257 deletions
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20
run/driar.run
View File

@@ -15,6 +15,7 @@ set unzip [check_installed unzip]
set build_components {
core init
app/retro_frontend
drivers/audio
drivers/framebuffer
drivers/input
drivers/timer
@@ -29,7 +30,8 @@ proc platform_drv_policy {} {
return {
<policy label_prefix="ps2_drv"> <device name="PS2"/> </policy>
<policy label_prefix="usb_drv"> <pci class="USB"/> </policy>
<policy label_prefix="fb_drv"> <pci class="VGA"/> </policy>}
<policy label_prefix="fb_drv"> <pci class="VGA"/> </policy>
<policy label_prefix="audio_drv"> <pci class="AUDIO"/> <pci class="HDAUDIO"/> </policy>}
}
append_platform_drv_build_components
@@ -95,6 +97,10 @@ append_if [have_spec ps2] config {
<alias name="input_drv" child="ps2_drv"/>}
append config {
<start name="audio_drv">
<resource name="RAM" quantum="8M"/>
<provides><service name="Audio_out"/></provides>
</start>
<start name="timer">
<resource name="RAM" quantum="1M"/>
<provides><service name="Timer"/></provides>
@@ -112,10 +118,13 @@ append config {
<resource name="RAM" quantum="2M"/>
<provides> <service name="Input"/> </provides>
<config>
<map from="KEY_A" to="BTN_A"/>
<map from="KEY_S" to="BTN_B"/>
<map from="KEY_LEFTCTRL" to="BTN_A"/>
<map from="KEY_LEFTALT" to="BTN_B"/>
<!-- Retroarch mappings -->
<map from="KEY_Z" to="BTN_B"/>
<map from="KEY_A" to="BTN_Y"/>
<map from="KEY_X" to="BTN_A"/>
<map from="KEY_S" to="BTN_X"/>
<map from="KEY_Q" to="BTN_TL"/>
<map from="KEY_W" to="BTN_TR"/>
<map from="KEY_ENTER" to="BTN_START"/>
<map from="KEY_RIGHTSHIFT" to="BTN_SELECT"/>
<map from="KEY_LEFT" to="BTN_LEFT"/>
@@ -166,6 +175,7 @@ if {![file exist bin/Driar.nes]} {
# generic modules
set boot_modules {
core init ld.lib.so
audio_drv
fb_upscale
input_remap
libc.lib.so

23
run/superbossgaiden.run
View File

@@ -15,6 +15,7 @@ set unzip [check_installed unzip]
set build_components {
core init
app/retro_frontend
drivers/audio
drivers/framebuffer
drivers/input
drivers/timer
@@ -29,7 +30,9 @@ proc platform_drv_policy {} {
return {
<policy label_prefix="ps2_drv"> <device name="PS2"/> </policy>
<policy label_prefix="usb_drv"> <pci class="USB"/> </policy>
<policy label_prefix="fb_drv"> <pci class="VGA"/> </policy>}
<policy label_prefix="fb_drv"> <pci class="VGA"/> </policy>
<policy label_prefix="audio_drv"> <pci class="AUDIO"/> <pci class="HDAUDIO"/> </policy>}
}
append_platform_drv_build_components
@@ -95,6 +98,10 @@ append_if [have_spec ps2] config {
<alias name="input_drv" child="ps2_drv"/>}
append config {
<start name="audio_drv">
<resource name="RAM" quantum="8M"/>
<provides><service name="Audio_out"/></provides>
</start>
<start name="timer">
<resource name="RAM" quantum="1M"/>
<provides><service name="Timer"/></provides>
@@ -112,12 +119,13 @@ append config {
<resource name="RAM" quantum="2M"/>
<provides> <service name="Input"/> </provides>
<config>
<map from="KEY_A" to="BTN_A"/>
<map from="KEY_S" to="BTN_B"/>
<map from="KEY_D" to="BTN_Y"/>
<map from="KEY_LEFTCTRL" to="BTN_A"/>
<map from="KEY_LEFTALT" to="BTN_B"/>
<map from="KEY_LEFTMETA" to="BTN_Y"/>
<!-- Retroarch mappings -->
<map from="KEY_Z" to="BTN_B"/>
<map from="KEY_A" to="BTN_Y"/>
<map from="KEY_X" to="BTN_A"/>
<map from="KEY_S" to="BTN_X"/>
<map from="KEY_Q" to="BTN_TL"/>
<map from="KEY_W" to="BTN_TR"/>
<map from="KEY_ENTER" to="BTN_START"/>
<map from="KEY_RIGHTSHIFT" to="BTN_SELECT"/>
<map from="KEY_LEFT" to="BTN_LEFT"/>
@@ -168,6 +176,7 @@ if {![file exist "bin/superbossgaiden.sfc"]} {
# generic modules
set boot_modules {
core init ld.lib.so
audio_drv
fb_upscale
input_remap
libc.lib.so