[FFmpeg-devel] [PATCH 1/2] decklink: Move AVPacketQueue into decklink_common

[Devin Heitmueller <devin.heitmueller@ltnglobal.com>]

Move the AVPacketQueue functionality that is currently only used
for the decklink decode module into decklink_common, so it can
be shared by the decklink encoder (i.e. for VANC insertion when
we receive data packets separate from video).

Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
---
 libavdevice/decklink_common.cpp | 115 ++++++++++++++++++++++++++++++++++++++++
 libavdevice/decklink_common.h   |   7 +++
 libavdevice/decklink_dec.cpp    | 114 ---------------------------------------
 3 files changed, 122 insertions(+), 114 deletions(-)

diff --git a/libavdevice/decklink_common.cpp b/libavdevice/decklink_common.cpp
index acd1f77..31ab249 100644
--- a/libavdevice/decklink_common.cpp
+++ b/libavdevice/decklink_common.cpp
@@ -390,6 +390,121 @@ int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t directio
     return ff_decklink_set_format(avctx, 0, 0, 0, 0, AV_FIELD_UNKNOWN, direction);
 }
 
+void avpacket_queue_init(AVFormatContext *avctx, AVPacketQueue *q)
+{
+    struct decklink_cctx *ctx = (struct decklink_cctx *)avctx->priv_data;
+    memset(q, 0, sizeof(AVPacketQueue));
+    pthread_mutex_init(&q->mutex, NULL);
+    pthread_cond_init(&q->cond, NULL);
+    q->avctx = avctx;
+    q->max_q_size = ctx->queue_size;
+}
+
+void avpacket_queue_flush(AVPacketQueue *q)
+{
+    PacketListEntry *pkt, *pkt1;
+
+    pthread_mutex_lock(&q->mutex);
+    for (pkt = q->pkt_list.head; pkt != NULL; pkt = pkt1) {
+        pkt1 = pkt->next;
+        av_packet_unref(&pkt->pkt);
+        av_freep(&pkt);
+    }
+    q->pkt_list.head = NULL;
+    q->pkt_list.tail = NULL;
+    q->nb_packets = 0;
+    q->size       = 0;
+    pthread_mutex_unlock(&q->mutex);
+}
+
+void avpacket_queue_end(AVPacketQueue *q)
+{
+    avpacket_queue_flush(q);
+    pthread_mutex_destroy(&q->mutex);
+    pthread_cond_destroy(&q->cond);
+}
+
+unsigned long long avpacket_queue_size(AVPacketQueue *q)
+{
+    unsigned long long size;
+    pthread_mutex_lock(&q->mutex);
+    size = q->size;
+    pthread_mutex_unlock(&q->mutex);
+    return size;
+}
+
+int avpacket_queue_put(AVPacketQueue *q, AVPacket *pkt)
+{
+    PacketListEntry *pkt1;
+
+    // Drop Packet if queue size is > maximum queue size
+    if (avpacket_queue_size(q) > (uint64_t)q->max_q_size) {
+        av_packet_unref(pkt);
+        av_log(q->avctx, AV_LOG_WARNING,  "Decklink input buffer overrun!\n");
+        return -1;
+    }
+    /* ensure the packet is reference counted */
+    if (av_packet_make_refcounted(pkt) < 0) {
+        av_packet_unref(pkt);
+        return -1;
+    }
+
+    pkt1 = (PacketListEntry *)av_malloc(sizeof(*pkt1));
+    if (!pkt1) {
+        av_packet_unref(pkt);
+        return -1;
+    }
+    av_packet_move_ref(&pkt1->pkt, pkt);
+    pkt1->next = NULL;
+
+    pthread_mutex_lock(&q->mutex);
+
+    if (!q->pkt_list.tail) {
+        q->pkt_list.head = pkt1;
+    } else {
+        q->pkt_list.tail->next = pkt1;
+    }
+
+    q->pkt_list.tail = pkt1;
+    q->nb_packets++;
+    q->size += pkt1->pkt.size + sizeof(*pkt1);
+
+    pthread_cond_signal(&q->cond);
+
+    pthread_mutex_unlock(&q->mutex);
+    return 0;
+}
+
+int avpacket_queue_get(AVPacketQueue *q, AVPacket *pkt, int block)
+{
+    int ret;
+
+    pthread_mutex_lock(&q->mutex);
+
+    for (;; ) {
+        PacketListEntry *pkt1 = q->pkt_list.head;
+        if (pkt1) {
+            q->pkt_list.head = pkt1->next;
+            if (!q->pkt_list.head) {
+                q->pkt_list.tail = NULL;
+            }
+            q->nb_packets--;
+            q->size -= pkt1->pkt.size + sizeof(*pkt1);
+            *pkt     = pkt1->pkt;
+            av_free(pkt1);
+            ret = 1;
+            break;
+        } else if (!block) {
+            ret = 0;
+            break;
+        } else {
+            pthread_cond_wait(&q->cond, &q->mutex);
+        }
+    }
+    pthread_mutex_unlock(&q->mutex);
+    return ret;
+}
+
 int ff_decklink_list_devices(AVFormatContext *avctx,
                              struct AVDeviceInfoList *device_list,
                              int show_inputs, int show_outputs)
diff --git a/libavdevice/decklink_common.h b/libavdevice/decklink_common.h
index 088e165..d4330e5 100644
--- a/libavdevice/decklink_common.h
+++ b/libavdevice/decklink_common.h
@@ -232,4 +232,11 @@ int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direct
 void ff_decklink_cleanup(AVFormatContext *avctx);
 int ff_decklink_init_device(AVFormatContext *avctx, const char* name);
 
+void avpacket_queue_init(AVFormatContext *avctx, AVPacketQueue *q);
+void avpacket_queue_flush(AVPacketQueue *q);
+void avpacket_queue_end(AVPacketQueue *q);
+unsigned long long avpacket_queue_size(AVPacketQueue *q);
+int avpacket_queue_put(AVPacketQueue *q, AVPacket *pkt);
+int avpacket_queue_get(AVPacketQueue *q, AVPacket *pkt, int block);
+
 #endif /* AVDEVICE_DECKLINK_COMMON_H */
diff --git a/libavdevice/decklink_dec.cpp b/libavdevice/decklink_dec.cpp
index 7bf5e37..b3ff2b0 100644
--- a/libavdevice/decklink_dec.cpp
+++ b/libavdevice/decklink_dec.cpp
@@ -471,120 +471,6 @@ skip_packet:
     return tgt;
 }
 
-static void avpacket_queue_init(AVFormatContext *avctx, AVPacketQueue *q)
-{
-    struct decklink_cctx *ctx = (struct decklink_cctx *)avctx->priv_data;
-    memset(q, 0, sizeof(AVPacketQueue));
-    pthread_mutex_init(&q->mutex, NULL);
-    pthread_cond_init(&q->cond, NULL);
-    q->avctx = avctx;
-    q->max_q_size = ctx->queue_size;
-}
-
-static void avpacket_queue_flush(AVPacketQueue *q)
-{
-    PacketListEntry *pkt, *pkt1;
-
-    pthread_mutex_lock(&q->mutex);
-    for (pkt = q->pkt_list.head; pkt != NULL; pkt = pkt1) {
-        pkt1 = pkt->next;
-        av_packet_unref(&pkt->pkt);
-        av_freep(&pkt);
-    }
-    q->pkt_list.head = NULL;
-    q->pkt_list.tail = NULL;
-    q->nb_packets = 0;
-    q->size       = 0;
-    pthread_mutex_unlock(&q->mutex);
-}
-
-static void avpacket_queue_end(AVPacketQueue *q)
-{
-    avpacket_queue_flush(q);
-    pthread_mutex_destroy(&q->mutex);
-    pthread_cond_destroy(&q->cond);
-}
-
-static unsigned long long avpacket_queue_size(AVPacketQueue *q)
-{
-    unsigned long long size;
-    pthread_mutex_lock(&q->mutex);
-    size = q->size;
-    pthread_mutex_unlock(&q->mutex);
-    return size;
-}
-
-static int avpacket_queue_put(AVPacketQueue *q, AVPacket *pkt)
-{
-    PacketListEntry *pkt1;
-
-    // Drop Packet if queue size is > maximum queue size
-    if (avpacket_queue_size(q) > (uint64_t)q->max_q_size) {
-        av_packet_unref(pkt);
-        av_log(q->avctx, AV_LOG_WARNING,  "Decklink input buffer overrun!\n");
-        return -1;
-    }
-    /* ensure the packet is reference counted */
-    if (av_packet_make_refcounted(pkt) < 0) {
-        av_packet_unref(pkt);
-        return -1;
-    }
-
-    pkt1 = (PacketListEntry *)av_malloc(sizeof(*pkt1));
-    if (!pkt1) {
-        av_packet_unref(pkt);
-        return -1;
-    }
-    av_packet_move_ref(&pkt1->pkt, pkt);
-    pkt1->next = NULL;
-
-    pthread_mutex_lock(&q->mutex);
-
-    if (!q->pkt_list.tail) {
-        q->pkt_list.head = pkt1;
-    } else {
-        q->pkt_list.tail->next = pkt1;
-    }
-
-    q->pkt_list.tail = pkt1;
-    q->nb_packets++;
-    q->size += pkt1->pkt.size + sizeof(*pkt1);
-
-    pthread_cond_signal(&q->cond);
-
-    pthread_mutex_unlock(&q->mutex);
-    return 0;
-}
-
-static int avpacket_queue_get(AVPacketQueue *q, AVPacket *pkt, int block)
-{
-    int ret;
-
-    pthread_mutex_lock(&q->mutex);
-
-    for (;; ) {
-        PacketListEntry *pkt1 = q->pkt_list.head;
-        if (pkt1) {
-            q->pkt_list.head = pkt1->next;
-            if (!q->pkt_list.head) {
-                q->pkt_list.tail = NULL;
-            }
-            q->nb_packets--;
-            q->size -= pkt1->pkt.size + sizeof(*pkt1);
-            *pkt     = pkt1->pkt;
-            av_free(pkt1);
-            ret = 1;
-            break;
-        } else if (!block) {
-            ret = 0;
-            break;
-        } else {
-            pthread_cond_wait(&q->cond, &q->mutex);
-        }
-    }
-    pthread_mutex_unlock(&q->mutex);
-    return ret;
-}
 
 static void handle_klv(AVFormatContext *avctx, decklink_ctx *ctx, IDeckLinkVideoInputFrame *videoFrame, int64_t pts)
 {
-- 
1.8.3.1

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