avdevice/decklink: add support for setting duplex mode

This patch also makes BlackMagic drivers v10.6.1 a hard requirement.

Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

5 files changed, 42 insertions, 0 deletions

diff --git a/libavdevice/decklink_common.cpp b/libavdevice/decklink_common.cpp
index 2711fc1138..b6a2c96584 100644
--- a/libavdevice/decklink_common.cpp
+++ b/libavdevice/decklink_common.cpp
@@ -111,6 +111,23 @@ 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) {
         res = ctx->dli->GetDisplayModeIterator (&itermode);
     } else {
@@ -249,6 +266,10 @@ 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 +300,17 @@ 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;
 }
diff --git a/libavdevice/decklink_common.h b/libavdevice/decklink_common.h
index ee39ff234e..201eb15462 100644
--- a/libavdevice/decklink_common.h
+++ b/libavdevice/decklink_common.h
@@ -44,6 +44,8 @@ struct decklink_ctx {
     IDeckLink *dl;
     IDeckLinkOutput *dlo;
     IDeckLinkInput *dli;
+    IDeckLinkConfiguration *cfg;
+    IDeckLinkAttributes *attr;
     decklink_output_callback *output_callback;
     decklink_input_callback *input_callback;
 
@@ -77,6 +79,7 @@ struct decklink_ctx {
     int list_formats;
     int64_t teletext_lines;
     double preroll;
+    int duplex_mode;
 
     int frames_preroll;
     int frames_buffer;
diff --git a/libavdevice/decklink_common_c.h b/libavdevice/decklink_common_c.h
index 2b5d92f250..f24f8f099c 100644
--- a/libavdevice/decklink_common_c.h
+++ b/libavdevice/decklink_common_c.h
@@ -34,6 +34,7 @@ struct decklink_cctx {
     double preroll;
     int v210;
     int audio_channels;
+    int duplex_mode;
 };
 
 #endif /* AVDEVICE_DECKLINK_COMMON_C_H */
diff --git a/libavdevice/decklink_dec.cpp b/libavdevice/decklink_dec.cpp
index 371be20ef9..fc9633f5e9 100644
--- a/libavdevice/decklink_dec.cpp
+++ b/libavdevice/decklink_dec.cpp
@@ -445,6 +445,7 @@ av_cold int ff_decklink_read_header(AVFormatContext *avctx)
     ctx->list_formats = cctx->list_formats;
     ctx->teletext_lines = cctx->teletext_lines;
     ctx->preroll      = cctx->preroll;
+    ctx->duplex_mode  = cctx->duplex_mode;
     cctx->ctx = ctx;
 
 #if !CONFIG_LIBZVBI
diff --git a/libavdevice/decklink_dec_c.c b/libavdevice/decklink_dec_c.c
index 40c21a753b..72baa7d981 100644
--- a/libavdevice/decklink_dec_c.c
+++ b/libavdevice/decklink_dec_c.c
@@ -36,6 +36,10 @@ static const AVOption options[] = {
     { "standard",     NULL,                                           0,  AV_OPT_TYPE_CONST, { .i64 = 0x7fff9fffeLL}, 0, 0,    DEC, "teletext_lines"},
     { "all",          NULL,                                           0,  AV_OPT_TYPE_CONST, { .i64 = 0x7ffffffffLL}, 0, 0,    DEC, "teletext_lines"},
     { "channels",     "number of audio channels", OFFSET(audio_channels), AV_OPT_TYPE_INT , { .i64 = 2   }, 2, 16, DEC },
+    { "duplex_mode",  "duplex mode",              OFFSET(duplex_mode),    AV_OPT_TYPE_INT,   { .i64 = 0}, 0, 2,    DEC, "duplex_mode"},
+    { "unset",         NULL,                                          0,  AV_OPT_TYPE_CONST, { .i64 = 0}, 0, 0,    DEC, "duplex_mode"},
+    { "half",          NULL,                                          0,  AV_OPT_TYPE_CONST, { .i64 = 1}, 0, 0,    DEC, "duplex_mode"},
+    { "full",          NULL,                                          0,  AV_OPT_TYPE_CONST, { .i64 = 2}, 0, 0,    DEC, "duplex_mode"},
     { NULL },
 };