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adapter: port the buffer list from GSList to GstQueueArray
Significantly reduces the amount of memory allocation operations. https://bugzilla.gnome.org/show_bug.cgi?id=795167
This commit is contained in:
Mathieu Duponchelle
parent
03e27aa5f0
commit
4456792218
1 changed files with 76 additions and 79 deletions
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@ -127,6 +127,7 @@
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#include <gst/gst_private.h>
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#include "gstadapter.h"
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#include <string.h>
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#include <gst/base/gstqueuearray.h>
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/* default size for the assembled data buffer */
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#define DEFAULT_SIZE 4096
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@ -141,8 +142,7 @@ struct _GstAdapter
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GObject object;
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/*< private > */
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GSList *buflist;
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GSList *buflist_end;
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GstQueueArray *bufqueue;
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gsize size;
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gsize skip;
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guint count;
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@ -160,7 +160,8 @@ struct _GstAdapter
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guint64 offset_distance;
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gsize scan_offset;
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GSList *scan_entry;
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/* G_MAXUINT when unset */
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guint scan_entry_idx;
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GstClockTime pts_at_discont;
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GstClockTime dts_at_discont;
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@ -208,6 +209,7 @@ gst_adapter_init (GstAdapter * adapter)
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adapter->dts_at_discont = GST_CLOCK_TIME_NONE;
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adapter->offset_at_discont = GST_BUFFER_OFFSET_NONE;
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adapter->distance_from_discont = 0;
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adapter->bufqueue = gst_queue_array_new (10);
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}
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static void
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@ -227,6 +229,8 @@ gst_adapter_finalize (GObject * object)
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g_free (adapter->assembled_data);
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gst_queue_array_free (adapter->bufqueue);
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GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
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}
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@ -252,15 +256,15 @@ gst_adapter_new (void)
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void
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gst_adapter_clear (GstAdapter * adapter)
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{
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GstMiniObject *obj;
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g_return_if_fail (GST_IS_ADAPTER (adapter));
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if (adapter->info.memory)
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gst_adapter_unmap (adapter);
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g_slist_foreach (adapter->buflist, (GFunc) gst_mini_object_unref, NULL);
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g_slist_free (adapter->buflist);
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adapter->buflist = NULL;
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adapter->buflist_end = NULL;
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while ((obj = gst_queue_array_pop_head (adapter->bufqueue)))
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gst_mini_object_unref (obj);
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adapter->count = 0;
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adapter->size = 0;
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adapter->skip = 0;
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@ -276,7 +280,7 @@ gst_adapter_clear (GstAdapter * adapter)
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adapter->offset_at_discont = GST_BUFFER_OFFSET_NONE;
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adapter->distance_from_discont = 0;
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adapter->scan_offset = 0;
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adapter->scan_entry = NULL;
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adapter->scan_entry_idx = G_MAXUINT;
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}
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static inline void
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@ -318,24 +322,23 @@ static void
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copy_into_unchecked (GstAdapter * adapter, guint8 * dest, gsize skip,
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gsize size)
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{
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GSList *g;
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GstBuffer *buf;
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gsize bsize, csize;
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guint idx = 0;
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/* first step, do skipping */
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/* we might well be copying where we were scanning */
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if (adapter->scan_entry && (adapter->scan_offset <= skip)) {
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g = adapter->scan_entry;
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if (adapter->scan_entry_idx != G_MAXUINT && (adapter->scan_offset <= skip)) {
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idx = adapter->scan_entry_idx;
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skip -= adapter->scan_offset;
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} else {
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g = adapter->buflist;
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idx = 0;
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}
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buf = g->data;
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buf = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
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bsize = gst_buffer_get_size (buf);
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while (G_UNLIKELY (skip >= bsize)) {
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skip -= bsize;
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g = g_slist_next (g);
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buf = g->data;
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buf = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
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bsize = gst_buffer_get_size (buf);
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}
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/* copy partial buffer */
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@ -350,8 +353,7 @@ copy_into_unchecked (GstAdapter * adapter, guint8 * dest, gsize skip,
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/* second step, copy remainder */
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while (size > 0) {
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g = g_slist_next (g);
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buf = g->data;
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buf = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
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bsize = gst_buffer_get_size (buf);
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if (G_LIKELY (bsize > 0)) {
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csize = MIN (bsize, size);
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@ -384,17 +386,16 @@ gst_adapter_push (GstAdapter * adapter, GstBuffer * buf)
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adapter->size += size;
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/* Note: merging buffers at this point is premature. */
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if (G_UNLIKELY (adapter->buflist == NULL)) {
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if (gst_queue_array_is_empty (adapter->bufqueue)) {
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GST_LOG_OBJECT (adapter, "pushing %p first %" G_GSIZE_FORMAT " bytes",
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buf, size);
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adapter->buflist = adapter->buflist_end = g_slist_append (NULL, buf);
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gst_queue_array_push_tail (adapter->bufqueue, buf);
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update_timestamps_and_offset (adapter, buf);
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} else {
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/* Otherwise append to the end, and advance our end pointer */
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GST_LOG_OBJECT (adapter, "pushing %p %" G_GSIZE_FORMAT " bytes at end, "
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"size now %" G_GSIZE_FORMAT, buf, size, adapter->size);
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adapter->buflist_end = g_slist_append (adapter->buflist_end, buf);
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adapter->buflist_end = g_slist_next (adapter->buflist_end);
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gst_queue_array_push_tail (adapter->bufqueue, buf);
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}
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++adapter->count;
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}
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@ -506,7 +507,7 @@ gst_adapter_map (GstAdapter * adapter, gsize size)
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#if 0
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do {
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#endif
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cur = adapter->buflist->data;
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cur = gst_queue_array_peek_head (adapter->bufqueue);
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skip = adapter->skip;
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csize = gst_buffer_get_size (cur);
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@ -567,7 +568,7 @@ gst_adapter_unmap (GstAdapter * adapter)
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g_return_if_fail (GST_IS_ADAPTER (adapter));
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if (adapter->info.memory) {
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GstBuffer *cur = adapter->buflist->data;
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GstBuffer *cur = gst_queue_array_peek_head (adapter->bufqueue);
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GST_LOG_OBJECT (adapter, "unmap memory buffer %p", cur);
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gst_buffer_unmap (cur, &adapter->info);
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adapter->info.memory = NULL;
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@ -629,7 +630,6 @@ gst_adapter_flush_unchecked (GstAdapter * adapter, gsize flush)
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{
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GstBuffer *cur;
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gsize size;
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GSList *g;
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GST_LOG_OBJECT (adapter, "flushing %" G_GSIZE_FORMAT " bytes", flush);
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@ -648,8 +648,7 @@ gst_adapter_flush_unchecked (GstAdapter * adapter, gsize flush)
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adapter->offset_distance -= adapter->skip;
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adapter->distance_from_discont -= adapter->skip;
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g = adapter->buflist;
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cur = g->data;
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cur = gst_queue_array_peek_head (adapter->bufqueue);
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size = gst_buffer_get_size (cur);
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while (flush >= size) {
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/* can skip whole buffer */
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@ -660,21 +659,20 @@ gst_adapter_flush_unchecked (GstAdapter * adapter, gsize flush)
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adapter->distance_from_discont += size;
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flush -= size;
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gst_buffer_unref (cur);
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g = g_slist_delete_link (g, g);
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--adapter->count;
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if (G_UNLIKELY (g == NULL)) {
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cur = NULL;
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gst_buffer_unref (gst_queue_array_pop_head (adapter->bufqueue));
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if (gst_queue_array_is_empty (adapter->bufqueue)) {
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GST_LOG_OBJECT (adapter, "adapter empty now");
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adapter->buflist_end = NULL;
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break;
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}
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/* there is a new head buffer, update the timestamps */
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cur = g->data;
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cur = gst_queue_array_peek_head (adapter->bufqueue);
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update_timestamps_and_offset (adapter, cur);
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size = gst_buffer_get_size (cur);
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}
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adapter->buflist = g;
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/* account for the remaining bytes */
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adapter->skip = flush;
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adapter->pts_distance += flush;
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@ -683,7 +681,7 @@ gst_adapter_flush_unchecked (GstAdapter * adapter, gsize flush)
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adapter->distance_from_discont += flush;
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/* invalidate scan position */
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adapter->scan_offset = 0;
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adapter->scan_entry = NULL;
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adapter->scan_entry_idx = G_MAXUINT;
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}
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/**
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@ -813,9 +811,9 @@ gst_adapter_get_buffer_fast (GstAdapter * adapter, gsize nbytes)
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{
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GstBuffer *buffer = NULL;
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GstBuffer *cur;
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GSList *item;
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gsize skip;
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gsize left = nbytes;
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guint idx, len;
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g_return_val_if_fail (GST_IS_ADAPTER (adapter), NULL);
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g_return_val_if_fail (nbytes > 0, NULL);
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@ -830,7 +828,7 @@ gst_adapter_get_buffer_fast (GstAdapter * adapter, gsize nbytes)
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return NULL;
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skip = adapter->skip;
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cur = adapter->buflist->data;
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cur = gst_queue_array_peek_head (adapter->bufqueue);
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if (skip == 0 && gst_buffer_get_size (cur) == nbytes) {
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GST_LOG_OBJECT (adapter, "providing buffer of %" G_GSIZE_FORMAT " bytes"
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@ -839,10 +837,12 @@ gst_adapter_get_buffer_fast (GstAdapter * adapter, gsize nbytes)
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goto done;
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}
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for (item = adapter->buflist; item && left > 0; item = item->next) {
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len = gst_queue_array_get_length (adapter->bufqueue);
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for (idx = 0; idx < len && left > 0; idx++) {
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gsize size, cur_size;
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cur = item->data;
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cur = gst_queue_array_peek_nth (adapter->bufqueue, idx);
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cur_size = gst_buffer_get_size (cur);
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size = MIN (cur_size - skip, left);
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@ -979,7 +979,7 @@ gst_adapter_get_buffer (GstAdapter * adapter, gsize nbytes)
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if (G_UNLIKELY (nbytes > adapter->size))
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return NULL;
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cur = adapter->buflist->data;
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cur = gst_queue_array_peek_head (adapter->bufqueue);
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skip = adapter->skip;
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hsize = gst_buffer_get_size (cur);
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@ -1014,18 +1014,20 @@ gst_adapter_get_buffer (GstAdapter * adapter, gsize nbytes)
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buffer = gst_buffer_new_wrapped (data, nbytes);
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{
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GSList *g;
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guint idx, len;
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GstBuffer *cur;
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gsize read_offset = 0;
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g = adapter->buflist;
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while (g && read_offset < nbytes + adapter->skip) {
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cur = g->data;
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idx = 0;
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len = gst_queue_array_get_length (adapter->bufqueue);
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while (idx < len && read_offset < nbytes + adapter->skip) {
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cur = gst_queue_array_peek_nth (adapter->bufqueue, idx);
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gst_buffer_foreach_meta (cur, foreach_metadata, buffer);
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read_offset += gst_buffer_get_size (cur);
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g = g_slist_next (g);
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idx++;
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}
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}
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@ -1108,7 +1110,7 @@ gst_adapter_take_list (GstAdapter * adapter, gsize nbytes)
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GST_LOG_OBJECT (adapter, "taking %" G_GSIZE_FORMAT " bytes", nbytes);
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while (nbytes > 0) {
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cur = adapter->buflist->data;
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cur = gst_queue_array_peek_head (adapter->bufqueue);
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skip = adapter->skip;
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cur_size = gst_buffer_get_size (cur);
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hsize = MIN (nbytes, cur_size - skip);
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@ -1146,18 +1148,18 @@ gst_adapter_get_list (GstAdapter * adapter, gsize nbytes)
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GQueue queue = G_QUEUE_INIT;
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GstBuffer *cur, *buffer;
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gsize hsize, skip, cur_size;
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GSList *g = NULL;
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guint idx;
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g_return_val_if_fail (GST_IS_ADAPTER (adapter), NULL);
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g_return_val_if_fail (nbytes <= adapter->size, NULL);
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GST_LOG_OBJECT (adapter, "getting %" G_GSIZE_FORMAT " bytes", nbytes);
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g = adapter->buflist;
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idx = 0;
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skip = adapter->skip;
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while (nbytes > 0) {
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cur = g->data;
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cur = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
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cur_size = gst_buffer_get_size (cur);
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hsize = MIN (nbytes, cur_size - skip);
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@ -1175,7 +1177,6 @@ gst_adapter_get_list (GstAdapter * adapter, gsize nbytes)
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nbytes -= hsize;
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skip = 0;
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g = g_slist_next (g);
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}
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return queue.head;
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@ -1224,7 +1225,7 @@ gst_adapter_take_buffer_list (GstAdapter * adapter, gsize nbytes)
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buffer_list = gst_buffer_list_new_sized (n_bufs);
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while (nbytes > 0) {
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cur = adapter->buflist->data;
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cur = gst_queue_array_peek_head (adapter->bufqueue);
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skip = adapter->skip;
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cur_size = gst_buffer_get_size (cur);
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hsize = MIN (nbytes, cur_size - skip);
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@ -1260,7 +1261,7 @@ gst_adapter_get_buffer_list (GstAdapter * adapter, gsize nbytes)
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GstBuffer *cur, *buffer;
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gsize hsize, skip, cur_size;
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guint n_bufs;
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GSList *g = NULL;
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guint idx;
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g_return_val_if_fail (GST_IS_ADAPTER (adapter), NULL);
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@ -1277,11 +1278,11 @@ gst_adapter_get_buffer_list (GstAdapter * adapter, gsize nbytes)
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buffer_list = gst_buffer_list_new_sized (n_bufs);
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g = adapter->buflist;
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idx = 0;
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skip = adapter->skip;
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while (nbytes > 0) {
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cur = g->data;
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cur = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
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cur_size = gst_buffer_get_size (cur);
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hsize = MIN (nbytes, cur_size - skip);
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@ -1299,7 +1300,6 @@ gst_adapter_get_buffer_list (GstAdapter * adapter, gsize nbytes)
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nbytes -= hsize;
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skip = 0;
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g = g_slist_next (g);
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}
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return buffer_list;
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@ -1339,7 +1339,7 @@ gst_adapter_available_fast (GstAdapter * adapter)
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{
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GstBuffer *cur;
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gsize size;
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GSList *g;
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guint idx;
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g_return_val_if_fail (GST_IS_ADAPTER (adapter), 0);
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@ -1352,13 +1352,12 @@ gst_adapter_available_fast (GstAdapter * adapter)
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return adapter->assembled_len;
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/* take the first non-zero buffer */
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g = adapter->buflist;
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idx = 0;
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while (TRUE) {
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cur = g->data;
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cur = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
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size = gst_buffer_get_size (cur);
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if (size != 0)
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break;
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g = g_slist_next (g);
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}
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/* we can quickly get the (remaining) data of the first buffer */
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@ -1549,17 +1548,18 @@ gst_adapter_prev_pts_at_offset (GstAdapter * adapter, gsize offset,
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guint64 * distance)
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{
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GstBuffer *cur;
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GSList *g;
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gsize read_offset = 0;
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gsize pts_offset = 0;
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GstClockTime pts = adapter->pts;
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guint idx, len;
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g_return_val_if_fail (GST_IS_ADAPTER (adapter), GST_CLOCK_TIME_NONE);
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g = adapter->buflist;
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idx = 0;
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len = gst_queue_array_get_length (adapter->bufqueue);
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while (g && read_offset < offset + adapter->skip) {
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cur = g->data;
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while (idx < len && read_offset < offset + adapter->skip) {
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cur = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
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if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (cur))) {
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pts = GST_BUFFER_PTS (cur);
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@ -1567,7 +1567,6 @@ gst_adapter_prev_pts_at_offset (GstAdapter * adapter, gsize offset,
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}
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read_offset += gst_buffer_get_size (cur);
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g = g_slist_next (g);
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}
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if (distance)
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@ -1599,17 +1598,18 @@ gst_adapter_prev_dts_at_offset (GstAdapter * adapter, gsize offset,
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guint64 * distance)
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{
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GstBuffer *cur;
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GSList *g;
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gsize read_offset = 0;
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gsize dts_offset = 0;
|
||||
GstClockTime dts = adapter->dts;
|
||||
guint idx, len;
|
||||
|
||||
g_return_val_if_fail (GST_IS_ADAPTER (adapter), GST_CLOCK_TIME_NONE);
|
||||
|
||||
g = adapter->buflist;
|
||||
idx = 0;
|
||||
len = gst_queue_array_get_length (adapter->bufqueue);
|
||||
|
||||
while (g && read_offset < offset + adapter->skip) {
|
||||
cur = g->data;
|
||||
while (idx < len && read_offset < offset + adapter->skip) {
|
||||
cur = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
|
||||
|
||||
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DTS (cur))) {
|
||||
dts = GST_BUFFER_DTS (cur);
|
||||
|
|
@ -1617,7 +1617,6 @@ gst_adapter_prev_dts_at_offset (GstAdapter * adapter, gsize offset,
|
|||
}
|
||||
|
||||
read_offset += gst_buffer_get_size (cur);
|
||||
g = g_slist_next (g);
|
||||
}
|
||||
|
||||
if (distance)
|
||||
|
|
@ -1653,12 +1652,12 @@ gssize
|
|||
gst_adapter_masked_scan_uint32_peek (GstAdapter * adapter, guint32 mask,
|
||||
guint32 pattern, gsize offset, gsize size, guint32 * value)
|
||||
{
|
||||
GSList *g;
|
||||
gsize skip, bsize, i;
|
||||
guint32 state;
|
||||
GstMapInfo info;
|
||||
guint8 *bdata;
|
||||
GstBuffer *buf;
|
||||
guint idx;
|
||||
|
||||
g_return_val_if_fail (size > 0, -1);
|
||||
g_return_val_if_fail (offset + size <= adapter->size, -1);
|
||||
|
|
@ -1672,22 +1671,21 @@ gst_adapter_masked_scan_uint32_peek (GstAdapter * adapter, guint32 mask,
|
|||
|
||||
/* first step, do skipping and position on the first buffer */
|
||||
/* optimistically assume scanning continues sequentially */
|
||||
if (adapter->scan_entry && (adapter->scan_offset <= skip)) {
|
||||
g = adapter->scan_entry;
|
||||
if (adapter->scan_entry_idx != G_MAXUINT && (adapter->scan_offset <= skip)) {
|
||||
idx = adapter->scan_entry_idx;
|
||||
skip -= adapter->scan_offset;
|
||||
} else {
|
||||
g = adapter->buflist;
|
||||
idx = 0;
|
||||
adapter->scan_offset = 0;
|
||||
adapter->scan_entry = NULL;
|
||||
adapter->scan_entry_idx = G_MAXUINT;
|
||||
}
|
||||
buf = g->data;
|
||||
buf = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
|
||||
bsize = gst_buffer_get_size (buf);
|
||||
while (G_UNLIKELY (skip >= bsize)) {
|
||||
skip -= bsize;
|
||||
g = g_slist_next (g);
|
||||
adapter->scan_offset += bsize;
|
||||
adapter->scan_entry = g;
|
||||
buf = g->data;
|
||||
adapter->scan_entry_idx = idx;
|
||||
buf = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
|
||||
bsize = gst_buffer_get_size (buf);
|
||||
}
|
||||
/* get the data now */
|
||||
|
|
@ -1723,11 +1721,10 @@ gst_adapter_masked_scan_uint32_peek (GstAdapter * adapter, guint32 mask,
|
|||
|
||||
/* nothing found yet, go to next buffer */
|
||||
skip += bsize;
|
||||
g = g_slist_next (g);
|
||||
adapter->scan_offset += info.size;
|
||||
adapter->scan_entry = g;
|
||||
adapter->scan_entry_idx = idx;
|
||||
gst_buffer_unmap (buf, &info);
|
||||
buf = g->data;
|
||||
buf = gst_queue_array_peek_nth (adapter->bufqueue, idx++);
|
||||
|
||||
if (!gst_buffer_map (buf, &info, GST_MAP_READ))
|
||||
return -1;
|
||||
|
|
|
|||
Loading…
Reference in a new issue