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unittester: Implement most of 0x01 "Capture Screen Snapshot"

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The thing that isn't implemented is the actual snapshot capture.
But the dimensions should be correct.
I am feeling a bit iffy about the overscan, though.
This commit is contained in:
GreaseMonkey
2024-01-07 21:26:14 +13:00
parent 59e51939ad
commit d44c439bd8
1 changed files with 126 additions and 3 deletions
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129
src/device/unittester.c
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@@ -27,6 +27,7 @@
#include <86box/io.h>
#include <86box/plat.h>
#include <86box/unittester.h>
#include <86box/video.h>
enum fsm1_value {
UT_FSM1_WAIT_8,
@@ -68,7 +69,7 @@ struct unittester_state {
enum fsm2_value fsm2;
uint16_t fsm2_new_iobase;
/* Runtime state */
/* Command and data handling state */
uint8_t status;
enum unittester_cmd cmd_id;
uint32_t write_offs;
@@ -76,6 +77,19 @@ struct unittester_state {
uint32_t write_len;
uint32_t read_len;
/* Screen snapshot state */
/* Monitor to take snapshot on */
uint8_t snap_monitor;
/* Main image width + height */
uint16_t snap_img_width;
uint16_t snap_img_height;
/* Fully overscanned image width + height */
uint16_t snap_overscan_width;
uint16_t snap_overscan_height;
/* Offset of actual image within overscanned area */
uint16_t snap_img_xoffs;
uint16_t snap_img_yoffs;
/* Command-specific state */
/* 0x04: Exit */
uint8_t exit_code;
@@ -90,6 +104,9 @@ static const struct unittester_state unittester_defaults = {
.cmd_id = UT_CMD_NOOP,
};
/* Kept separate, as we will be reusing this object */
static bitmap_t *unittester_screen_buffer = NULL;
/* FIXME: This needs a config option! --GM */
static bool unittester_exit_enabled = true;
@@ -133,6 +150,13 @@ unittester_write(uint16_t port, uint8_t val, UNUSED(void *priv))
unittester.status = UT_STATUS_IDLE;
break;
/* 0x01: Capture Screen Snapshot */
case UT_CMD_CAPTURE_SCREEN_SNAPSHOT:
unittester.cmd_id = UT_CMD_CAPTURE_SCREEN_SNAPSHOT;
unittester.status = UT_STATUS_AWAITING_WRITE;
unittester.write_len = 1;
break;
/* 0x04: Exit */
case UT_CMD_EXIT:
unittester.cmd_id = UT_CMD_EXIT;
@@ -166,6 +190,16 @@ unittester_write(uint16_t port, uint8_t val, UNUSED(void *priv))
}
break;
case UT_CMD_CAPTURE_SCREEN_SNAPSHOT:
switch(unittester.write_offs) {
case 0:
unittester.snap_monitor = val;
break;
default:
break;
}
break;
/* This should not be reachable, but just in case... */
default:
break;
@@ -194,9 +228,47 @@ unittester_write(uint16_t port, uint8_t val, UNUSED(void *priv))
} else {
/* No - report successful command completion and continue program execution */
unittester_log("[UT] Exit disabled, continuing execution\n");
unittester.cmd_id = UT_CMD_NOOP;
unittester.status = UT_STATUS_IDLE;
}
unittester.cmd_id = UT_CMD_NOOP;
unittester.status = UT_STATUS_IDLE;
break;
case UT_CMD_CAPTURE_SCREEN_SNAPSHOT:
/* Recompute screen */
unittester.snap_img_width = 0;
unittester.snap_img_height = 0;
unittester.snap_img_xoffs = 0;
unittester.snap_img_yoffs = 0;
unittester.snap_overscan_width = 0;
unittester.snap_overscan_height = 0;
if (unittester.snap_monitor < 0x01 || (unittester.snap_monitor - 1) > MONITORS_NUM) {
/* No monitor here - clear snapshot */
unittester.snap_monitor = 0x00;
} else if (video_get_type_monitor(unittester.snap_monitor - 1) == VIDEO_FLAG_TYPE_NONE) {
/* Monitor disabled - clear snapshot */
unittester.snap_monitor = 0x00;
} else {
/* Capture snapshot from monitor */
const monitor_t *m = &monitors[unittester.snap_monitor - 1];
unittester.snap_img_width = m->mon_xsize;
unittester.snap_img_height = m->mon_ysize;
unittester.snap_overscan_width = m->mon_xsize + m->mon_overscan_x;
unittester.snap_overscan_height = m->mon_ysize + m->mon_overscan_y;
unittester.snap_img_xoffs = (m->mon_overscan_x >> 1);
unittester.snap_img_yoffs = (m->mon_overscan_y >> 1);
/* TODO: Actually take snapshot! --GM */
}
/* We have 12 bytes to read. */
unittester_log("[UT] Screen snapshot - image %d x %d @ (%d, %d) in overscan %d x %d\n",
unittester.snap_img_width,
unittester.snap_img_height,
unittester.snap_img_xoffs,
unittester.snap_img_yoffs,
unittester.snap_overscan_width,
unittester.snap_overscan_height);
unittester.status = UT_STATUS_AWAITING_READ;
unittester.read_len = 12;
break;
default:
@@ -230,6 +302,49 @@ unittester_read(uint16_t port, UNUSED(void *priv))
return 0xFF;
switch (unittester.cmd_id) {
case UT_CMD_CAPTURE_SCREEN_SNAPSHOT:
switch(unittester.read_offs) {
case 0:
outval = (uint8_t)(unittester.snap_img_width);
break;
case 1:
outval = (uint8_t)(unittester.snap_img_width>>8);
break;
case 2:
outval = (uint8_t)(unittester.snap_img_height);
break;
case 3:
outval = (uint8_t)(unittester.snap_img_height>>8);
break;
case 4:
outval = (uint8_t)(unittester.snap_overscan_width);
break;
case 5:
outval = (uint8_t)(unittester.snap_overscan_width>>8);
break;
case 6:
outval = (uint8_t)(unittester.snap_overscan_height);
break;
case 7:
outval = (uint8_t)(unittester.snap_overscan_height>>8);
break;
case 8:
outval = (uint8_t)(unittester.snap_img_xoffs);
break;
case 9:
outval = (uint8_t)(unittester.snap_img_xoffs>>8);
break;
case 10:
outval = (uint8_t)(unittester.snap_img_yoffs);
break;
case 11:
outval = (uint8_t)(unittester.snap_img_yoffs>>8);
break;
default:
break;
}
break;
/* This should not be reachable, but just in case... */
default:
break;
@@ -330,6 +445,9 @@ unittester_trigger_write(UNUSED(uint16_t port), uint8_t val, UNUSED(void *priv))
static void *
unittester_init(UNUSED(const device_t *info))
{
if (unittester_screen_buffer == NULL)
unittester_screen_buffer = create_bitmap(2048, 2048);
unittester = (struct unittester_state)unittester_defaults;
io_sethandler(unittester.trigger_port, 1, NULL, NULL, NULL, unittester_trigger_write, NULL, NULL, NULL);
@@ -347,6 +465,11 @@ unittester_close(UNUSED(void *priv))
io_removehandler(unittester.iobase_port, 2, unittester_read, NULL, NULL, unittester_write, NULL, NULL, NULL);
unittester.iobase_port = 0xFFFF;
if (unittester_screen_buffer != NULL) {
destroy_bitmap(unittester_screen_buffer);
unittester_screen_buffer = NULL;
}
unittester_log("[UT] 86Box Unit Tester closed\n");
}