avdevice/decklink: add support for audio and video input selection

[ffmpeg] / libavdevice / decklink_common.cpp

diff --git a/libavdevice/decklink_common.cpp b/libavdevice/decklink_common.cpp
index 2711fc1138671d6239b5bda6039ff65cd3f4719e..362567341edca24fdcff95d769b80801ed11a235 100644 (file)
--- a/libavdevice/decklink_common.cpp
+++ b/libavdevice/decklink_common.cpp
@@ -98,6 +98,35 @@ HRESULT ff_decklink_get_display_name(IDeckLink *This, const char **displayName)
     return hr;
 }
 
+static int decklink_select_input(AVFormatContext *avctx, BMDDeckLinkConfigurationID cfg_id)
+{
+    struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
+    struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
+    BMDDeckLinkAttributeID attr_id = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? BMDDeckLinkAudioInputConnections : BMDDeckLinkVideoInputConnections;
+    int64_t bmd_input              = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? ctx->audio_input : ctx->video_input;
+    const char *type_name          = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? "audio" : "video";
+    int64_t supported_connections = 0;
+    HRESULT res;
+
+    if (bmd_input) {
+        res = ctx->attr->GetInt(attr_id, &supported_connections);
+        if (res != S_OK) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to query supported %s inputs.\n", type_name);
+            return AVERROR_EXTERNAL;
+        }
+        if ((supported_connections & bmd_input) != bmd_input) {
+            av_log(avctx, AV_LOG_ERROR, "Device does not support selected %s input.\n", type_name);
+            return AVERROR(ENOSYS);
+        }
+        res = ctx->cfg->SetInt(cfg_id, bmd_input);
+        if (res != S_OK) {
+            av_log(avctx, AV_LOG_ERROR, "Failed to select %s input.\n", type_name);
+            return AVERROR_EXTERNAL;
+        }
+    }
+    return 0;
+}
+
 int ff_decklink_set_format(AVFormatContext *avctx,
                                int width, int height,
                                int tb_num, int tb_den,
@@ -111,7 +140,31 @@ int ff_decklink_set_format(AVFormatContext *avctx,
     int i = 1;
     HRESULT res;
 
+    if (ctx->duplex_mode) {
+        bool duplex_supported = false;
+
+        if (ctx->attr->GetFlag(BMDDeckLinkSupportsDuplexModeConfiguration, &duplex_supported) != S_OK)
+            duplex_supported = false;
+
+        if (duplex_supported) {
+            res = ctx->cfg->SetInt(bmdDeckLinkConfigDuplexMode, ctx->duplex_mode == 2 ? bmdDuplexModeFull : bmdDuplexModeHalf);
+            if (res != S_OK)
+                av_log(avctx, AV_LOG_WARNING, "Setting duplex mode failed.\n");
+            else
+                av_log(avctx, AV_LOG_VERBOSE, "Succesfully set duplex mode to %s duplex.\n", ctx->duplex_mode == 2 ? "full" : "half");
+        } else {
+            av_log(avctx, AV_LOG_WARNING, "Unable to set duplex mode, because it is not supported.\n");
+        }
+    }
+
     if (direction == DIRECTION_IN) {
+        int ret;
+        ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
+        if (ret < 0)
+            return ret;
+        ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
+        if (ret < 0)
+            return ret;
         res = ctx->dli->GetDisplayModeIterator (&itermode);
     } else {
         res = ctx->dlo->GetDisplayModeIterator (&itermode);
@@ -207,6 +260,13 @@ int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direct
     HRESULT res;
 
     if (direction == DIRECTION_IN) {
+        int ret;
+        ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
+        if (ret < 0)
+            return ret;
+        ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
+        if (ret < 0)
+            return ret;
         res = ctx->dli->GetDisplayModeIterator (&itermode);
     } else {
         res = ctx->dlo->GetDisplayModeIterator (&itermode);
@@ -249,6 +309,10 @@ void ff_decklink_cleanup(AVFormatContext *avctx)
         ctx->dli->Release();
     if (ctx->dlo)
         ctx->dlo->Release();
+    if (ctx->attr)
+        ctx->attr->Release();
+    if (ctx->cfg)
+        ctx->cfg->Release();
     if (ctx->dl)
         ctx->dl->Release();
 }
@@ -279,5 +343,17 @@ int ff_decklink_init_device(AVFormatContext *avctx, const char* name)
     if (!ctx->dl)
         return AVERROR(ENXIO);
 
+    if (ctx->dl->QueryInterface(IID_IDeckLinkConfiguration, (void **)&ctx->cfg) != S_OK) {
+        av_log(avctx, AV_LOG_ERROR, "Could not get configuration interface for '%s'\n", name);
+        ff_decklink_cleanup(avctx);
+        return AVERROR_EXTERNAL;
+    }
+
+    if (ctx->dl->QueryInterface(IID_IDeckLinkAttributes, (void **)&ctx->attr) != S_OK) {
+        av_log(avctx, AV_LOG_ERROR, "Could not get attributes interface for '%s'\n", name);
+        ff_decklink_cleanup(avctx);
+        return AVERROR_EXTERNAL;
+    }
+
     return 0;
 }