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mpeg2dec: Fix large output buffers leak

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This commit is contained in:
Nicolas Dufresne 2012-05-01 18:49:03 +00:00 committed by Sebastian Dröge
parent 92d71237bf
commit da928611b7
1 changed files with 65 additions and 24 deletions
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89
ext/mpeg2dec/gstmpeg2dec.c
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@ -90,7 +90,7 @@ static GstFlowReturn gst_mpeg2dec_handle_frame (GstVideoDecoder * decoder,
static void gst_mpeg2dec_set_index (GstElement * element, GstIndex * index);
static GstIndex *gst_mpeg2dec_get_index (GstElement * element);
static void clear_buffers (GstMpeg2dec * mpeg2dec);
static void gst_mpeg2dec_clear_buffers (GstMpeg2dec * mpeg2dec);
static gboolean gst_mpeg2dec_crop_buffer (GstMpeg2dec * dec, GstBuffer ** buf);
@ -161,7 +161,7 @@ gst_mpeg2dec_finalize (GObject * object)
mpeg2dec->decoder = NULL;
}
clear_buffers (mpeg2dec);
gst_mpeg2dec_clear_buffers (mpeg2dec);
g_free (mpeg2dec->dummybuf[3]);
mpeg2dec->dummybuf[3] = NULL;
@ -191,7 +191,7 @@ gst_mpeg2dec_close (GstVideoDecoder * decoder)
mpeg2dec->decoder = NULL;
mpeg2dec->info = NULL;
}
clear_buffers (mpeg2dec);
gst_mpeg2dec_clear_buffers (mpeg2dec);
return TRUE;
}
@ -260,7 +260,7 @@ gst_mpeg2dec_reset (GstVideoDecoder * decoder, gboolean hard)
mpeg2_reset (mpeg2dec->decoder, hard);
mpeg2_skip (mpeg2dec->decoder, 1);
clear_buffers (mpeg2dec);
gst_mpeg2dec_clear_buffers (mpeg2dec);
return TRUE;
}
@ -398,6 +398,60 @@ gst_mpeg2dec_alloc_sized_buf (GstMpeg2dec * mpeg2dec, guint size,
GST_BUFFER_SIZE (*obuf) = size;
}
typedef struct
{
GstBuffer *buffer;
gint id;
} GstMpeg2DecBuffer;
static void
gst_mpeg2dec_clear_buffers (GstMpeg2dec * mpeg2dec)
{
GList *l;
while ((l = g_list_first (mpeg2dec->buffers))) {
GstMpeg2DecBuffer *mbuf = l->data;
gst_buffer_unref (mbuf->buffer);
g_slice_free (GstMpeg2DecBuffer, mbuf);
mpeg2dec->buffers = g_list_delete_link (mpeg2dec->buffers, l);
}
}
static void
gst_mpeg2dec_save_buffer (GstMpeg2dec * mpeg2dec, GstBuffer * buffer, gint id)
{
GstMpeg2DecBuffer *mbuf;
mbuf = g_slice_new0 (GstMpeg2DecBuffer);
mbuf->buffer = gst_buffer_ref (buffer);
mbuf->id = id;
mpeg2dec->buffers = g_list_prepend (mpeg2dec->buffers, mbuf);
}
static gint
gst_mpeg2dec_buffer_compare (GstMpeg2DecBuffer * mbuf, gconstpointer id)
{
if (mbuf->id == GPOINTER_TO_INT (id))
return 0;
return -1;
}
static void
gst_mpeg2dec_discard_buffer (GstMpeg2dec * mpeg2dec, gint id)
{
GList *l = g_list_find_custom (mpeg2dec->buffers, GINT_TO_POINTER (id),
(GCompareFunc) gst_mpeg2dec_buffer_compare);
if (l) {
GstMpeg2DecBuffer *mbuf = l->data;
gst_buffer_unref (mbuf->buffer);
g_slice_free (GstMpeg2DecBuffer, mbuf);
mpeg2dec->buffers = g_list_delete_link (mpeg2dec->buffers, l);
} else {
GST_WARNING ("Could not find buffer %u, will be leaked until next reset");
}
}
static void
gst_mpeg2dec_alloc_buffer (GstMpeg2dec * mpeg2dec, gint64 offset,
GstVideoCodecFrame * frame)
@ -416,8 +470,8 @@ gst_mpeg2dec_alloc_buffer (GstMpeg2dec * mpeg2dec, gint64 offset,
mpeg2_set_buf (mpeg2dec->decoder, buf,
GINT_TO_POINTER (frame->system_frame_number));
mpeg2dec->buffers = g_list_prepend (mpeg2dec->buffers,
gst_buffer_ref (frame->output_buffer));
gst_mpeg2dec_save_buffer (mpeg2dec, frame->output_buffer,
frame->system_frame_number);
/* we store the original byteoffset of this picture in the stream here
* because we need it for indexing */
@ -585,6 +639,7 @@ handle_sequence (GstMpeg2dec * mpeg2dec, const mpeg2_info_t * info)
mpeg2_set_buf (mpeg2dec->decoder, mpeg2dec->dummybuf, NULL);
mpeg2_set_buf (mpeg2dec->decoder, mpeg2dec->dummybuf, NULL);
mpeg2_set_buf (mpeg2dec->decoder, mpeg2dec->dummybuf, NULL);
gst_mpeg2dec_clear_buffers (mpeg2dec);
done:
return ret;
@ -597,16 +652,6 @@ negotiate_failed:
}
}
static void
clear_buffers (GstMpeg2dec * mpeg2dec)
{
GList *l;
while ((l = g_list_first (mpeg2dec->buffers))) {
gst_buffer_unref (GST_BUFFER (l->data));
mpeg2dec->buffers = g_list_delete_link (mpeg2dec->buffers, l);
}
}
static GstFlowReturn
handle_picture (GstMpeg2dec * mpeg2dec, const mpeg2_info_t * info,
GstVideoCodecFrame * frame)
@ -831,15 +876,11 @@ gst_mpeg2dec_handle_frame (GstVideoDecoder * decoder,
} else {
GST_DEBUG_OBJECT (mpeg2dec, "no picture to display");
}
if (info->discard_fbuf && info->discard_fbuf->id) {
GList *l = g_list_find (mpeg2dec->buffers, info->discard_fbuf->id);
if (l) {
gst_buffer_unref (GST_BUFFER (l->data));
mpeg2dec->buffers = g_list_delete_link (mpeg2dec->buffers, l);
}
}
if (info->discard_fbuf && info->discard_fbuf->id)
gst_mpeg2dec_discard_buffer (mpeg2dec,
GPOINTER_TO_INT (info->discard_fbuf->id));
if (state != STATE_SLICE) {
clear_buffers (mpeg2dec);
gst_mpeg2dec_clear_buffers (mpeg2dec);
}
break;
case STATE_BUFFER: