633 lines
14 KiB
C
633 lines
14 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <windows.h>
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#define fst_error(...) fprintf(stderr, __VA_ARGS__)
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#ifdef PLATFORM_WINDOWS
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#include <pthread.h>
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static UINT_PTR idle_timer_id = 0;
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#else /* linux + wine */
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#include <linux/limits.h> // PATH_MAX
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#include <winnt.h>
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#include <wine/exception.h>
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#include <pthread.h>
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static int gui_quit = 0;
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static unsigned int idle_id = 0;
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#endif
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#ifndef COMPILER_MSVC
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extern char * strdup (const char *);
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#endif
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#include <glib.h>
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#include "fst.h"
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struct ERect {
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short top;
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short left;
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short bottom;
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short right;
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};
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static pthread_mutex_t plugin_mutex;
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static VSTState* fst_first = NULL; /**< Head of linked list of all FSTs */
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static int host_initialized = 0;
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static const char magic[] = "FST Plugin State v002";
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static LRESULT WINAPI
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vstedit_wndproc (HWND w, UINT msg, WPARAM wp, LPARAM lp)
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{
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switch (msg) {
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case WM_KEYUP:
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case WM_KEYDOWN:
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break;
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case WM_CLOSE:
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/* we don't care about windows closing ...
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* WM_CLOSE is used for minimizing the window.
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* Our window has no frame so it shouldn't ever
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* get sent - but if it does, we don't want our
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* window to get minimized!
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*/
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return 0;
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break;
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case WM_DESTROY:
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case WM_NCDESTROY:
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/* we don't care about windows being destroyed ... */
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return 0;
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break;
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default:
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break;
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}
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return DefWindowProcA (w, msg, wp, lp );
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}
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static void
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maybe_set_program (VSTState* fst)
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{
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if (fst->want_program != -1) {
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if (fst->vst_version >= 2) {
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fst->plugin->dispatcher (fst->plugin, effBeginSetProgram, 0, 0, NULL, 0);
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}
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fst->plugin->dispatcher (fst->plugin, effSetProgram, 0, fst->want_program, NULL, 0);
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if (fst->vst_version >= 2) {
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fst->plugin->dispatcher (fst->plugin, effEndSetProgram, 0, 0, NULL, 0);
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}
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fst->want_program = -1;
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}
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if (fst->want_chunk == 1) {
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// XXX check
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// 24 == audioMasterGetAutomationState,
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// 48 == audioMasterGetChunkFile
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fst->plugin->dispatcher (fst->plugin, 24 /* effSetChunk */, 1, fst->wanted_chunk_size, fst->wanted_chunk, 0);
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fst->want_chunk = 0;
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}
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}
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static VOID CALLBACK
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idle_hands(
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HWND hwnd, // handle to window for timer messages
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UINT message, // WM_TIMER message
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UINT idTimer, // timer identifier
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DWORD dwTime) // current system time
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{
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VSTState* fst;
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pthread_mutex_lock (&plugin_mutex);
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for (fst = fst_first; fst; fst = fst->next) {
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if (fst->gui_shown) {
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// this seems insane, but some plugins will not draw their meters if you don't
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// call this every time. Example Ambience by Magnus @ Smartelectron:x
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fst->plugin->dispatcher (fst->plugin, effEditIdle, 0, 0, NULL, 0);
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if (fst->wantIdle) {
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fst->wantIdle = fst->plugin->dispatcher (fst->plugin, effIdle, 0, 0, NULL, 0);
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}
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}
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pthread_mutex_lock (&fst->lock);
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#ifndef PLATFORM_WINDOWS /* linux + wine */
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/* Dispatch messages to send keypresses to the plugin */
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int i;
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for (i = 0; i < fst->n_pending_keys; ++i) {
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MSG msg;
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/* I'm not quite sure what is going on here; it seems
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* `special' keys must be delivered with WM_KEYDOWN,
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* but that alphanumerics etc. must use WM_CHAR or
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* they will be ignored. Ours is not to reason why ...
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*/
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if (fst->pending_keys[i].special != 0) {
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msg.message = WM_KEYDOWN;
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msg.wParam = fst->pending_keys[i].special;
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} else {
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msg.message = WM_CHAR;
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msg.wParam = fst->pending_keys[i].character;
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}
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msg.hwnd = GetFocus ();
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msg.lParam = 0;
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DispatchMessageA (&msg);
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}
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fst->n_pending_keys = 0;
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#endif
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/* See comment for maybe_set_program call below */
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maybe_set_program (fst);
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fst->want_program = -1;
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fst->want_chunk = 0;
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/* If we don't have an editor window yet, we still need to
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* set up the program, otherwise when we load a plugin without
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* opening its window it will sound wrong. However, it seems
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* that if you don't also load the program after opening the GUI,
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* the GUI does not reflect the program properly. So we'll not
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* mark that we've done this (ie we won't set want_program to -1)
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* and so it will be done again if and when the GUI arrives.
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*/
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if (fst->program_set_without_editor == 0) {
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maybe_set_program (fst);
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fst->program_set_without_editor = 1;
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}
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pthread_mutex_unlock (&fst->lock);
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}
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pthread_mutex_unlock (&plugin_mutex);
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}
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static void
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fst_idle_timer_add_plugin (VSTState* fst)
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{
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pthread_mutex_lock (&plugin_mutex);
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if (fst_first == NULL) {
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fst_first = fst;
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} else {
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VSTState* p = fst_first;
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while (p->next) {
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p = p->next;
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}
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p->next = fst;
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}
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pthread_mutex_unlock (&plugin_mutex);
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}
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static void
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fst_idle_timer_remove_plugin (VSTState* fst)
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{
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VSTState* p;
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VSTState* prev;
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pthread_mutex_lock (&plugin_mutex);
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for (p = fst_first, prev = NULL; p; prev = p, p = p->next) {
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if (p == fst) {
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if (prev) {
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prev->next = p->next;
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}
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break;
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}
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if (!p->next) {
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break;
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}
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}
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if (fst_first == fst) {
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fst_first = fst_first->next;
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}
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pthread_mutex_unlock (&plugin_mutex);
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}
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static VSTState*
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fst_new (void)
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{
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VSTState* fst = (VSTState*) calloc (1, sizeof (VSTState));
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fst->init();
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#ifdef PLATFORM_WINDOWS
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fst->voffset = 50;
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fst->hoffset = 0;
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#else /* linux + wine */
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fst->voffset = 24;
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fst->hoffset = 6;
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#endif
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return fst;
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}
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static void
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fst_delete (VSTState* fst)
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{
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if (fst) {
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free((void*)fst);
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fst = NULL;
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}
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}
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static VSTHandle*
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fst_handle_new (void)
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{
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VSTHandle* fst = (VSTHandle*) calloc (1, sizeof (VSTHandle));
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return fst;
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}
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#ifndef PLATFORM_WINDOWS /* linux + wine */
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static gboolean
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g_idle_call (gpointer ignored) {
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if (gui_quit) return FALSE;
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MSG msg;
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if (PeekMessageA (&msg, NULL, 0, 0, 1)) {
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TranslateMessage (&msg);
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DispatchMessageA (&msg);
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}
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idle_hands(NULL, 0, 0, 0);
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g_main_context_iteration(NULL, FALSE);
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return gui_quit ? FALSE : TRUE;
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}
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#endif
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int
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fst_init (void* possible_hmodule)
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{
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if (host_initialized) return 0;
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HMODULE hInst;
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if (possible_hmodule) {
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#ifdef PLATFORM_WINDOWS
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fst_error ("Error in fst_init(): (module handle is unnecessary for Win32 build)");
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return -1;
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#else /* linux + wine */
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hInst = (HMODULE) possible_hmodule;
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#endif
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} else if ((hInst = GetModuleHandleA (NULL)) == NULL) {
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fst_error ("can't get module handle");
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return -1;
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}
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if (!hInst) {
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fst_error ("Cannot initialise VST host");
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return -1;
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}
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WNDCLASSEX wclass;
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wclass.cbSize = sizeof(WNDCLASSEX);
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#ifdef PLATFORM_WINDOWS
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wclass.style = (CS_HREDRAW | CS_VREDRAW);
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wclass.hIcon = NULL;
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wclass.hCursor = LoadCursor(0, IDC_ARROW);
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#else /* linux + wine */
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wclass.style = 0;
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wclass.hIcon = LoadIcon(hInst, "FST");
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wclass.hCursor = LoadCursor(0, IDI_APPLICATION);
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#endif
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wclass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
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wclass.lpfnWndProc = vstedit_wndproc;
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wclass.cbClsExtra = 0;
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wclass.cbWndExtra = 0;
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wclass.hInstance = hInst;
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wclass.lpszMenuName = "MENU_FST";
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wclass.lpszClassName = "FST";
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wclass.hIconSm = 0;
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pthread_mutex_init (&plugin_mutex, NULL);
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host_initialized = -1;
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if (!RegisterClassExA(&wclass)){
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fst_error ("Error in fst_init(): (class registration failed");
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return -1;
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}
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return 0;
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}
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void
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fst_start_threading(void)
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{
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#ifndef PLATFORM_WINDOWS /* linux + wine */
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if (idle_id == 0) {
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gui_quit = 0;
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idle_id = g_idle_add (g_idle_call, NULL);
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}
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#endif
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}
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void
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fst_stop_threading(void) {
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#ifndef PLATFORM_WINDOWS /* linux + wine */
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if (idle_id != 0) {
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gui_quit = 1;
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PostQuitMessage (0);
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g_main_context_iteration(NULL, FALSE);
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//g_source_remove(idle_id);
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idle_id = 0;
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}
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#endif
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}
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void
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fst_exit (void)
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{
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if (!host_initialized) return;
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VSTState* fst;
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// If any plugins are still open at this point, close them!
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while ((fst = fst_first))
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fst_close (fst);
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#ifdef PLATFORM_WINDOWS
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if (idle_timer_id != 0) {
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KillTimer(NULL, idle_timer_id);
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}
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#else /* linux + wine */
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if (idle_id) {
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gui_quit = 1;
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PostQuitMessage (0);
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}
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#endif
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host_initialized = FALSE;
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pthread_mutex_destroy (&plugin_mutex);
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}
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int
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fst_run_editor (VSTState* fst, void* window_parent)
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{
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/* For safety, remove any pre-existing editor window */
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fst_destroy_editor (fst);
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if (fst->windows_window == NULL) {
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HMODULE hInst;
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HWND window;
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struct ERect* er = NULL;
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if (!(fst->plugin->flags & effFlagsHasEditor)) {
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fst_error ("Plugin \"%s\" has no editor", fst->handle->name);
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return -1;
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}
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if ((hInst = GetModuleHandleA (NULL)) == NULL) {
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fst_error ("fst_create_editor() can't get module handle");
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return 1;
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}
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if ((window = CreateWindowExA (0, "FST", fst->handle->name,
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window_parent ? WS_CHILD : (WS_OVERLAPPEDWINDOW & ~WS_THICKFRAME & ~WS_MAXIMIZEBOX),
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CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
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(HWND)window_parent, NULL,
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hInst,
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NULL) ) == NULL) {
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fst_error ("fst_create_editor() cannot create editor window");
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return 1;
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}
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if (!SetPropA (window, "fst_ptr", fst)) {
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fst_error ("fst_create_editor() cannot set fst_ptr on window");
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}
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fst->windows_window = window;
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if (window_parent) {
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// This is requiredv for some reason. Note the parent is set above when the window
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// is created. Without this extra call the actual plugin window will draw outside
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// of our plugin window.
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SetParent((HWND)fst->windows_window, (HWND)window_parent);
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fst->xid = 0;
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#ifndef PLATFORM_WINDOWS /* linux + wine */
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} else {
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SetWindowPos (fst->windows_window, 0, 9999, 9999, 2, 2, 0);
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ShowWindow (fst->windows_window, SW_SHOWNA);
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fst->xid = (int) GetPropA (fst->windows_window, "__wine_x11_whole_window");
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#endif
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}
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// This is the suggested order of calls.
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fst->plugin->dispatcher (fst->plugin, effEditGetRect, 0, 0, &er, 0 );
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fst->plugin->dispatcher (fst->plugin, effEditOpen, 0, 0, fst->windows_window, 0 );
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fst->plugin->dispatcher (fst->plugin, effEditGetRect, 0, 0, &er, 0 );
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if (er != NULL) {
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fst->width = er->right - er->left;
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fst->height = er->bottom - er->top;
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}
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fst->been_activated = TRUE;
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}
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if (fst->windows_window) {
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#ifdef PLATFORM_WINDOWS
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if (idle_timer_id == 0) {
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// Init the idle timer if needed, so that the main window calls us.
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idle_timer_id = SetTimer(NULL, idle_timer_id, 50, (TIMERPROC) idle_hands);
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}
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#endif
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fst_idle_timer_add_plugin (fst);
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}
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return fst->windows_window == NULL ? -1 : 0;
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}
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void
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fst_destroy_editor (VSTState* fst)
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{
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if (fst->windows_window) {
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fprintf (stderr, "%s destroying edit window\n", fst->handle->name);
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fst_idle_timer_remove_plugin (fst);
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fst->plugin->dispatcher( fst->plugin, effEditClose, 0, 0, NULL, 0.0 );
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DestroyWindow ((HWND)(fst->windows_window));
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fst->windows_window = NULL;
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}
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fst->been_activated = FALSE;
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}
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void
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fst_move_window_into_view (VSTState* fst)
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{
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if (fst->windows_window) {
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#ifdef PLATFORM_WINDOWS
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SetWindowPos ((HWND)(fst->windows_window), 0, fst->hoffset, fst->voffset, fst->width + fst->hoffset, fst->height + fst->voffset, 0);
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#else /* linux + wine */
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SetWindowPos ((HWND)(fst->windows_window), 0, 0, 0, fst->width + fst->hoffset, fst->height + fst->voffset, 0);
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#endif
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ShowWindow ((HWND)(fst->windows_window), SW_SHOWNA);
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}
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}
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static HMODULE
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fst_load_vst_library(const char * path)
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{
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char legalized_path[PATH_MAX];
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strcpy (legalized_path, g_locale_from_utf8(path, -1, NULL, NULL, NULL));
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return ( LoadLibraryA (legalized_path) );
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}
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VSTHandle *
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fst_load (const char *path)
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{
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VSTHandle* fhandle = NULL;
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if ((strlen(path)) && (NULL != (fhandle = fst_handle_new ())))
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{
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char* period;
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fhandle->path = strdup (path);
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fhandle->name = g_path_get_basename(path);
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if ((period = strrchr (fhandle->name, '.'))) {
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*period = '\0';
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}
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// See if we can load the plugin DLL
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if ((fhandle->dll = (HMODULE)fst_load_vst_library (path)) == NULL) {
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fst_unload (&fhandle);
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return NULL;
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}
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fhandle->main_entry = (main_entry_t) GetProcAddress ((HMODULE)fhandle->dll, "main");
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if (fhandle->main_entry == 0) {
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if ((fhandle->main_entry = (main_entry_t) GetProcAddress ((HMODULE)fhandle->dll, "VSTPluginMain"))) {
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fprintf(stderr, "VST >= 2.4 plugin '%s'\n", path);
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//PBD::warning << path << _(": is a VST >= 2.4 - this plugin may or may not function correctly with this version of Ardour.") << endmsg;
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}
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}
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if (fhandle->main_entry == 0) {
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fst_unload (&fhandle);
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return NULL;
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}
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}
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return fhandle;
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}
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int
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fst_unload (VSTHandle** fhandle)
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{
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if (!(*fhandle)) {
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return -1;
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}
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if ((*fhandle)->plugincnt) {
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return -1;
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}
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if ((*fhandle)->dll) {
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FreeLibrary ((HMODULE)(*fhandle)->dll);
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(*fhandle)->dll = NULL;
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}
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if ((*fhandle)->path) {
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free ((*fhandle)->path);
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(*fhandle)->path = NULL;
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|
}
|
|
|
|
if ((*fhandle)->name) {
|
|
free ((*fhandle)->name);
|
|
(*fhandle)->name = NULL;
|
|
}
|
|
|
|
free (*fhandle);
|
|
*fhandle = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
VSTState*
|
|
fst_instantiate (VSTHandle* fhandle, audioMasterCallback amc, void* userptr)
|
|
{
|
|
VSTState* fst = NULL;
|
|
|
|
if( fhandle == NULL ) {
|
|
fst_error( "fst_instantiate(): (the handle was NULL)\n" );
|
|
return NULL;
|
|
}
|
|
|
|
fst = fst_new ();
|
|
|
|
if ((fst->plugin = fhandle->main_entry (amc)) == NULL) {
|
|
fst_error ("fst_instantiate: %s could not be instantiated\n", fhandle->name);
|
|
free (fst);
|
|
return NULL;
|
|
}
|
|
|
|
fst->handle = fhandle;
|
|
fst->plugin->user = userptr;
|
|
|
|
if (fst->plugin->magic != kEffectMagic) {
|
|
fst_error ("fst_instantiate: %s is not a vst plugin\n", fhandle->name);
|
|
fst_close(fst);
|
|
return NULL;
|
|
}
|
|
|
|
fst->plugin->dispatcher (fst->plugin, effOpen, 0, 0, 0, 0);
|
|
fst->vst_version = fst->plugin->dispatcher (fst->plugin, effGetVstVersion, 0, 0, 0, 0);
|
|
|
|
fst->handle->plugincnt++;
|
|
fst->wantIdle = 0;
|
|
|
|
return fst;
|
|
}
|
|
|
|
void fst_audio_master_idle(void) {
|
|
while(g_main_context_iteration(NULL, FALSE)) ;
|
|
}
|
|
|
|
void
|
|
fst_close (VSTState* fst)
|
|
{
|
|
if (fst != NULL) {
|
|
fst_destroy_editor (fst);
|
|
|
|
if (fst->plugin) {
|
|
fst->plugin->dispatcher (fst->plugin, effMainsChanged, 0, 0, NULL, 0);
|
|
fst->plugin->dispatcher (fst->plugin, effClose, 0, 0, 0, 0);
|
|
fst->plugin = NULL;
|
|
}
|
|
|
|
if (fst->handle) {
|
|
if (fst->handle->plugincnt && --fst->handle->plugincnt == 0) {
|
|
|
|
fst->handle->main_entry = NULL;
|
|
fst_unload (&fst->handle); // XXX
|
|
}
|
|
}
|
|
|
|
/* It might be good for this to be in it's own cleanup function
|
|
since it will free the memory for the fst leaving the caller
|
|
with an invalid pointer. Caller beware */
|
|
fst_delete(fst);
|
|
}
|
|
}
|
|
|
|
#if 0 // ?? who needs this, where?
|
|
float htonf (float v)
|
|
{
|
|
float result;
|
|
char * fin = (char*)&v;
|
|
char * fout = (char*)&result;
|
|
fout[0] = fin[3];
|
|
fout[1] = fin[2];
|
|
fout[2] = fin[1];
|
|
fout[3] = fin[0];
|
|
return result;
|
|
}
|
|
#endif
|