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decklink: don't limit number of devices to 16
There is no fixed limitation for the number of devices on the decklink API side according to BlackMagic. Many PC motherboards are able support 6 decklink cards each with up to 8 inputs so a limit of 16 might well be too low. https://bugzilla.gnome.org/show_bug.cgi?id=777239
This commit is contained in:
Tim-Philipp Müller
parent
c7e34a0b2f
commit
9bb905620c
1 changed files with 48 additions and 44 deletions
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@ -30,8 +30,6 @@
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#include "gstdecklinkaudiosrc.h"
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#include "gstdecklinkvideosrc.h"
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#define GST_DECKLINK_MAX_DEVICES 16
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GST_DEBUG_CATEGORY_STATIC (gst_decklink_debug);
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#define GST_CAT_DEFAULT gst_decklink_debug
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@ -1119,8 +1117,7 @@ gst_decklink_com_thread (gpointer data)
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#endif /* _MSC_VER */
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static GOnce devices_once = G_ONCE_INIT;
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static int n_devices;
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static Device devices[GST_DECKLINK_MAX_DEVICES];
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static GArray *devices; /* array of Device */
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static gpointer
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init_devices (gpointer data)
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@ -1149,29 +1146,32 @@ init_devices (gpointer data)
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return NULL;
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}
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devices = g_array_new (FALSE, TRUE, sizeof (Device));
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i = 0;
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ret = iterator->Next (&decklink);
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while (ret == S_OK) {
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g_mutex_init (&devices[i].input.lock);
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g_mutex_init (&devices[i].output.lock);
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g_cond_init (&devices[i].output.cond);
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Device dev;
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memset (&dev, 0, sizeof (Device));
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g_mutex_init (&dev.input.lock);
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g_mutex_init (&dev.output.lock);
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g_cond_init (&dev.output.cond);
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ret = decklink->QueryInterface (IID_IDeckLinkInput,
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(void **) &devices[i].input.input);
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(void **) &dev.input.input);
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if (ret != S_OK) {
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GST_WARNING ("selected device does not have input interface: 0x%08lx",
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(unsigned long) ret);
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} else {
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IDeckLinkDisplayModeIterator *mode_iter;
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devices[i].input.device = decklink;
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devices[i].input.
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input->SetCallback (new GStreamerDecklinkInputCallback (&devices[i].
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input));
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dev.input.device = decklink;
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dev.input.
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input->SetCallback (new GStreamerDecklinkInputCallback (&dev.input));
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if ((ret =
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devices[i].input.input->GetDisplayModeIterator (&mode_iter)) ==
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S_OK) {
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if ((ret = dev.input.input->GetDisplayModeIterator (&mode_iter)) == S_OK) {
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IDeckLinkDisplayMode *mode;
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GST_DEBUG ("Input %d supports:", i);
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@ -1194,22 +1194,20 @@ init_devices (gpointer data)
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}
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ret = decklink->QueryInterface (IID_IDeckLinkOutput,
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(void **) &devices[i].output.output);
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(void **) &dev.output.output);
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if (ret != S_OK) {
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GST_WARNING ("selected device does not have output interface: 0x%08lx",
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(unsigned long) ret);
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} else {
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IDeckLinkDisplayModeIterator *mode_iter;
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devices[i].output.device = decklink;
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devices[i].output.clock =
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dev.output.device = decklink;
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dev.output.clock =
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gst_decklink_clock_new ("GstDecklinkOutputClock");
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GST_DECKLINK_CLOCK_CAST (devices[i].output.clock)->output =
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&devices[i].output;
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GST_DECKLINK_CLOCK_CAST (dev.output.clock)->output =
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&dev.output;
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if ((ret =
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devices[i].output.output->GetDisplayModeIterator (&mode_iter)) ==
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S_OK) {
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if ((ret = dev.output.output->GetDisplayModeIterator (&mode_iter)) == S_OK) {
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IDeckLinkDisplayMode *mode;
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GST_DEBUG ("Output %d supports:", i);
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@ -1232,7 +1230,7 @@ init_devices (gpointer data)
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}
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ret = decklink->QueryInterface (IID_IDeckLinkConfiguration,
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(void **) &devices[i].input.config);
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(void **) &dev.input.config);
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if (ret != S_OK) {
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GST_WARNING ("selected device does not have config interface: 0x%08lx",
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(unsigned long) ret);
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@ -1240,28 +1238,30 @@ init_devices (gpointer data)
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char *serial_number;
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ret =
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devices[i].input.
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dev.input.
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config->GetString (bmdDeckLinkConfigDeviceInformationSerialNumber,
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(COMSTR_T *) & serial_number);
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if (ret == S_OK) {
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CONVERT_COM_STRING (serial_number);
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devices[i].output.hw_serial_number = g_strdup (serial_number);
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devices[i].input.hw_serial_number = g_strdup (serial_number);
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dev.output.hw_serial_number = g_strdup (serial_number);
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dev.input.hw_serial_number = g_strdup (serial_number);
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GST_DEBUG ("device %d has serial number %s", i, serial_number);
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FREE_COM_STRING (serial_number);
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}
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}
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ret = decklink->QueryInterface (IID_IDeckLinkAttributes,
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(void **) &devices[i].input.attributes);
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devices[i].output.attributes = devices[i].input.attributes;
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(void **) &dev.input.attributes);
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dev.output.attributes = dev.input.attributes;
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if (ret != S_OK) {
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GST_WARNING ("selected device does not have attributes interface: "
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"0x%08lx", (unsigned long) ret);
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}
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ret = decklink->QueryInterface (IID_IDeckLinkKeyer,
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(void **) &devices[i].output.keyer);
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(void **) &dev.output.keyer);
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g_array_append_val (devices, dev);
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/* We only warn of failure to obtain the keyer interface if the keyer
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* is enabled by keyer_mode
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@ -1269,14 +1269,9 @@ init_devices (gpointer data)
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ret = iterator->Next (&decklink);
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i++;
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if (i == GST_DECKLINK_MAX_DEVICES) {
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GST_WARNING ("this hardware has more then 10 devices");
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break;
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}
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}
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n_devices = i;
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GST_INFO ("Detected %u devices", devices->len);
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iterator->Release ();
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@ -1287,13 +1282,15 @@ GstDecklinkOutput *
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gst_decklink_acquire_nth_output (gint n, GstElement * sink, gboolean is_audio)
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{
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GstDecklinkOutput *output;
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Device *device;
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g_once (&devices_once, init_devices, NULL);
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if (n >= n_devices)
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if (n < 0 || (guint) n >= devices->len)
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return NULL;
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output = &devices[n].output;
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device = &g_array_index (devices, Device, n);
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output = &device->output;
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if (!output->output) {
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GST_ERROR ("Device %d has no output", n);
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return NULL;
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@ -1319,11 +1316,13 @@ void
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gst_decklink_release_nth_output (gint n, GstElement * sink, gboolean is_audio)
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{
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GstDecklinkOutput *output;
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Device *device;
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if (n >= n_devices)
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if (n < 0 || (guint) n >= devices->len)
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return;
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output = &devices[n].output;
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device = &g_array_index (devices, Device, n);
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output = &device->output;
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g_assert (output->output);
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g_mutex_lock (&output->lock);
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@ -1343,13 +1342,15 @@ GstDecklinkInput *
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gst_decklink_acquire_nth_input (gint n, GstElement * src, gboolean is_audio)
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{
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GstDecklinkInput *input;
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Device *device;
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g_once (&devices_once, init_devices, NULL);
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if (n >= n_devices)
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if (n < 0 || (guint) n >= devices->len)
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return NULL;
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input = &devices[n].input;
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device = &g_array_index (devices, Device, n);
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input = &device->input;
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if (!input->input) {
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GST_ERROR ("Device %d has no input", n);
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return NULL;
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@ -1377,11 +1378,14 @@ void
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gst_decklink_release_nth_input (gint n, GstElement * src, gboolean is_audio)
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{
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GstDecklinkInput *input;
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Device *device;
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if (n >= n_devices)
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if (n < 0 || (guint) n >= devices->len)
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return;
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input = &devices[n].input;
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device = &g_array_index (devices, Device, n);
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input = &device->input;
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g_assert (input->input);
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g_mutex_lock (&input->lock);
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