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gst/matroska/ebml-read.c: Don't create unnecessary sub-buffers all the time. Dramatically improves performance with m...
Original commit message from CVS: Patch by: Jindrich Makovicka <jindrich.makivicka at itonis tv> * gst/matroska/ebml-read.c: (gst_ebml_read_peek_bytes), (gst_ebml_read_pull_bytes), (gst_ebml_read_element_id), (gst_ebml_read_element_length), (gst_ebml_read_buffer), (gst_ebml_read_bytes), (gst_ebml_read_uint), (gst_ebml_read_sint), (gst_ebml_read_float), (gst_ebml_read_ascii), (gst_ebml_read_binary): Don't create unnecessary sub-buffers all the time. Dramatically improves performance with multiple concurrently running matroskademux instances (#341818) (and avoids doing unnecessarily inefficient things in the general case).
This commit is contained in:
parent
e57d09e835
commit
14ea3f13a4
2 changed files with 113 additions and 73 deletions
15
ChangeLog
15
ChangeLog
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@ -1,3 +1,18 @@
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2006-05-16 Tim-Philipp Müller <tim at centricular dot net>
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Patch by: Jindrich Makovicka <jindrich.makivicka at itonis tv>
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* gst/matroska/ebml-read.c: (gst_ebml_read_peek_bytes),
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(gst_ebml_read_pull_bytes), (gst_ebml_read_element_id),
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(gst_ebml_read_element_length), (gst_ebml_read_buffer),
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(gst_ebml_read_bytes), (gst_ebml_read_uint), (gst_ebml_read_sint),
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(gst_ebml_read_float), (gst_ebml_read_ascii),
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(gst_ebml_read_binary):
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Don't create unnecessary sub-buffers all the time. Dramatically
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improves performance with multiple concurrently running
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matroskademux instances (#341818) (and avoids doing
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unnecessarily inefficient things in the general case).
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2006-05-16 Edward Hervey <edward@fluendo.com>
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2006-05-16 Edward Hervey <edward@fluendo.com>
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* ext/libpng/gstpngenc.c: (gst_pngenc_chain):
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* ext/libpng/gstpngenc.c: (gst_pngenc_chain):
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@ -38,9 +38,9 @@ static GstStateChangeReturn gst_ebml_read_change_state (GstElement * element,
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/* convenience functions */
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/* convenience functions */
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static gboolean gst_ebml_read_peek_bytes (GstEbmlRead * ebml, guint size,
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static gboolean gst_ebml_read_peek_bytes (GstEbmlRead * ebml, guint size,
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GstBuffer ** p_buf);
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GstBuffer ** p_buf, guint8 ** bytes);
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static gboolean gst_ebml_read_pull_bytes (GstEbmlRead * ebml, guint size,
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static gboolean gst_ebml_read_pull_bytes (GstEbmlRead * ebml, guint size,
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GstBuffer ** p_buf);
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GstBuffer ** p_buf, guint8 ** bytes);
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static GstElementClass *parent_class; /* NULL */
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static GstElementClass *parent_class; /* NULL */
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@ -163,7 +163,8 @@ gst_ebml_read_element_level_up (GstEbmlRead * ebml)
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* Calls pull_range for (offset,size) without advancing our offset
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* Calls pull_range for (offset,size) without advancing our offset
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*/
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*/
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static gboolean
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static gboolean
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gst_ebml_read_peek_bytes (GstEbmlRead * ebml, guint size, GstBuffer ** p_buf)
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gst_ebml_read_peek_bytes (GstEbmlRead * ebml, guint size, GstBuffer ** p_buf,
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guint8 ** bytes)
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{
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{
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GstFlowReturn ret;
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GstFlowReturn ret;
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@ -175,8 +176,12 @@ gst_ebml_read_peek_bytes (GstEbmlRead * ebml, guint size, GstBuffer ** p_buf)
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if (cache_offset <= ebml->offset &&
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if (cache_offset <= ebml->offset &&
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(ebml->offset + size) < (cache_offset + cache_size)) {
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(ebml->offset + size) < (cache_offset + cache_size)) {
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if (p_buf)
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*p_buf = gst_buffer_create_sub (ebml->cached_buffer,
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*p_buf = gst_buffer_create_sub (ebml->cached_buffer,
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ebml->offset - cache_offset, size);
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ebml->offset - cache_offset, size);
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if (bytes)
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*bytes =
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GST_BUFFER_DATA (ebml->cached_buffer) + ebml->offset - cache_offset;
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return TRUE;
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return TRUE;
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}
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}
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gst_buffer_unref (ebml->cached_buffer);
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gst_buffer_unref (ebml->cached_buffer);
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@ -186,10 +191,16 @@ gst_ebml_read_peek_bytes (GstEbmlRead * ebml, guint size, GstBuffer ** p_buf)
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if (gst_pad_pull_range (ebml->sinkpad, ebml->offset, MAX (size, 64 * 1024),
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if (gst_pad_pull_range (ebml->sinkpad, ebml->offset, MAX (size, 64 * 1024),
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&ebml->cached_buffer) == GST_FLOW_OK &&
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&ebml->cached_buffer) == GST_FLOW_OK &&
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GST_BUFFER_SIZE (ebml->cached_buffer) >= size) {
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GST_BUFFER_SIZE (ebml->cached_buffer) >= size) {
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if (p_buf)
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*p_buf = gst_buffer_create_sub (ebml->cached_buffer, 0, size);
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*p_buf = gst_buffer_create_sub (ebml->cached_buffer, 0, size);
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if (bytes)
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*bytes = GST_BUFFER_DATA (ebml->cached_buffer);
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return TRUE;
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return TRUE;
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}
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}
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if (!p_buf)
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return FALSE;
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ret = gst_pad_pull_range (ebml->sinkpad, ebml->offset, size, p_buf);
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ret = gst_pad_pull_range (ebml->sinkpad, ebml->offset, size, p_buf);
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if (ret != GST_FLOW_OK) {
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if (ret != GST_FLOW_OK) {
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GST_DEBUG ("pull_range returned %d", ret);
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GST_DEBUG ("pull_range returned %d", ret);
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@ -202,9 +213,14 @@ gst_ebml_read_peek_bytes (GstEbmlRead * ebml, guint size, GstBuffer ** p_buf)
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size, GST_BUFFER_SIZE (*p_buf));
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size, GST_BUFFER_SIZE (*p_buf));
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gst_buffer_unref (*p_buf);
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gst_buffer_unref (*p_buf);
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*p_buf = NULL;
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*p_buf = NULL;
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if (bytes)
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*bytes = NULL;
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return FALSE;
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return FALSE;
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}
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}
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if (bytes)
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*bytes = GST_BUFFER_DATA (*p_buf);
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return TRUE;
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return TRUE;
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}
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}
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@ -212,9 +228,10 @@ gst_ebml_read_peek_bytes (GstEbmlRead * ebml, guint size, GstBuffer ** p_buf)
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* Calls pull_range for (offset,size) and advances our offset by size
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* Calls pull_range for (offset,size) and advances our offset by size
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*/
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*/
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static gboolean
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static gboolean
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gst_ebml_read_pull_bytes (GstEbmlRead * ebml, guint size, GstBuffer ** p_buf)
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gst_ebml_read_pull_bytes (GstEbmlRead * ebml, guint size, GstBuffer ** p_buf,
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guint8 ** bytes)
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{
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{
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if (!gst_ebml_read_peek_bytes (ebml, size, p_buf))
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if (!gst_ebml_read_peek_bytes (ebml, size, p_buf, bytes))
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return FALSE;
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return FALSE;
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ebml->offset += size;
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ebml->offset += size;
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@ -229,16 +246,15 @@ gst_ebml_read_pull_bytes (GstEbmlRead * ebml, guint size, GstBuffer ** p_buf)
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static gboolean
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static gboolean
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gst_ebml_read_element_id (GstEbmlRead * ebml, guint32 * id, guint * level_up)
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gst_ebml_read_element_id (GstEbmlRead * ebml, guint32 * id, guint * level_up)
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{
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{
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GstBuffer *buf;
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guint8 *buf;
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gint len_mask = 0x80, read = 1, n = 1;
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gint len_mask = 0x80, read = 1, n = 1;
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guint32 total;
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guint32 total;
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guint8 b;
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guint8 b;
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if (!gst_ebml_read_peek_bytes (ebml, 1, &buf))
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if (!gst_ebml_read_peek_bytes (ebml, 1, NULL, &buf))
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return FALSE;
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return FALSE;
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b = GST_READ_UINT8 (GST_BUFFER_DATA (buf));
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b = GST_READ_UINT8 (buf);
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gst_buffer_unref (buf);
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total = (guint32) b;
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total = (guint32) b;
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@ -255,11 +271,11 @@ gst_ebml_read_element_id (GstEbmlRead * ebml, guint32 * id, guint * level_up)
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return FALSE;
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return FALSE;
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}
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}
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if (!gst_ebml_read_peek_bytes (ebml, read, &buf))
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if (!gst_ebml_read_peek_bytes (ebml, read, NULL, &buf))
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return FALSE;
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return FALSE;
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while (n < read) {
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while (n < read) {
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b = GST_READ_UINT8 (GST_BUFFER_DATA (buf) + n);
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b = GST_READ_UINT8 (buf + n);
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total = (total << 8) | b;
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total = (total << 8) | b;
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++n;
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++n;
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}
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}
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@ -270,8 +286,6 @@ gst_ebml_read_element_id (GstEbmlRead * ebml, guint32 * id, guint * level_up)
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if (level_up)
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if (level_up)
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*level_up = gst_ebml_read_element_level_up (ebml);
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*level_up = gst_ebml_read_element_level_up (ebml);
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gst_buffer_unref (buf);
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ebml->offset += read;
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ebml->offset += read;
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return TRUE;
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return TRUE;
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}
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}
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@ -284,16 +298,15 @@ gst_ebml_read_element_id (GstEbmlRead * ebml, guint32 * id, guint * level_up)
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static gint
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static gint
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gst_ebml_read_element_length (GstEbmlRead * ebml, guint64 * length)
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gst_ebml_read_element_length (GstEbmlRead * ebml, guint64 * length)
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{
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{
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GstBuffer *buf;
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guint8 *buf;
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gint len_mask = 0x80, read = 1, n = 1, num_ffs = 0;
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gint len_mask = 0x80, read = 1, n = 1, num_ffs = 0;
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guint64 total;
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guint64 total;
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guint8 b;
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guint8 b;
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if (!gst_ebml_read_peek_bytes (ebml, 1, &buf))
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if (!gst_ebml_read_peek_bytes (ebml, 1, NULL, &buf))
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return -1;
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return -1;
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b = GST_READ_UINT8 (GST_BUFFER_DATA (buf));
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b = GST_READ_UINT8 (buf);
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gst_buffer_unref (buf);
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total = (guint64) b;
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total = (guint64) b;
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@ -313,18 +326,17 @@ gst_ebml_read_element_length (GstEbmlRead * ebml, guint64 * length)
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if ((total &= (len_mask - 1)) == len_mask - 1)
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if ((total &= (len_mask - 1)) == len_mask - 1)
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num_ffs++;
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num_ffs++;
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if (!gst_ebml_read_peek_bytes (ebml, read, &buf))
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if (!gst_ebml_read_peek_bytes (ebml, read, NULL, &buf))
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return -1;
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return -1;
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while (n < read) {
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while (n < read) {
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guint8 b = GST_READ_UINT8 (GST_BUFFER_DATA (buf) + n);
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guint8 b = GST_READ_UINT8 (buf + n);
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if (b == 0xff)
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if (b == 0xff)
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num_ffs++;
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num_ffs++;
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total = (total << 8) | b;
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total = (total << 8) | b;
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++n;
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++n;
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}
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}
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gst_buffer_unref (buf);
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if (read == num_ffs)
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if (read == num_ffs)
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*length = G_MAXUINT64;
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*length = G_MAXUINT64;
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@ -433,12 +445,44 @@ gst_ebml_read_buffer (GstEbmlRead * ebml, guint32 * id, GstBuffer ** buf)
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}
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}
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*buf = NULL;
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*buf = NULL;
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if (!gst_ebml_read_pull_bytes (ebml, (guint) length, buf))
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if (!gst_ebml_read_pull_bytes (ebml, (guint) length, buf, NULL))
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return FALSE;
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return FALSE;
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return TRUE;
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return TRUE;
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}
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}
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/*
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* Read the next element, return a pointer to it and its size.
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*/
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static gboolean
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gst_ebml_read_bytes (GstEbmlRead * ebml, guint32 * id, guint8 ** data,
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guint * size)
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{
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guint64 length;
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*size = 0;
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if (!gst_ebml_read_element_id (ebml, id, NULL))
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return FALSE;
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if (gst_ebml_read_element_length (ebml, &length) < 0)
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return FALSE;
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if (length == 0) {
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*data = NULL;
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return TRUE;
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}
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*data = NULL;
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if (!gst_ebml_read_pull_bytes (ebml, (guint) length, NULL, data))
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return FALSE;
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*size = (guint) length;
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return TRUE;
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}
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/*
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/*
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* Read the next element as an unsigned int.
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* Read the next element as an unsigned int.
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*/
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*/
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@ -446,30 +490,25 @@ gst_ebml_read_buffer (GstEbmlRead * ebml, guint32 * id, GstBuffer ** buf)
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gboolean
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gboolean
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gst_ebml_read_uint (GstEbmlRead * ebml, guint32 * id, guint64 * num)
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gst_ebml_read_uint (GstEbmlRead * ebml, guint32 * id, guint64 * num)
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{
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{
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GstBuffer *buf;
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guint8 *data;
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guint8 *data;
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guint size;
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guint size;
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if (!gst_ebml_read_buffer (ebml, id, &buf))
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if (!gst_ebml_read_bytes (ebml, id, &data, &size))
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return FALSE;
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return FALSE;
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data = GST_BUFFER_DATA (buf);
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size = GST_BUFFER_SIZE (buf);
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if (size < 1 || size > 8) {
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if (size < 1 || size > 8) {
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GST_ELEMENT_ERROR (ebml, STREAM, DEMUX, (NULL),
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GST_ELEMENT_ERROR (ebml, STREAM, DEMUX, (NULL),
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("Invalid integer element size %d at position %llu (0x%llu)",
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("Invalid integer element size %d at position %llu (0x%llu)",
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size, GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET (buf)));
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size, ebml->offset - size, ebml->offset - size));
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gst_buffer_unref (buf);
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return FALSE;
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return FALSE;
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}
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}
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*num = 0;
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*num = 0;
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while (size > 0) {
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while (size > 0) {
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*num = (*num << 8) | data[GST_BUFFER_SIZE (buf) - size];
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*num = (*num << 8) | *data;
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size--;
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size--;
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data++;
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}
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}
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gst_buffer_unref (buf);
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return TRUE;
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return TRUE;
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}
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}
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@ -480,34 +519,32 @@ gst_ebml_read_uint (GstEbmlRead * ebml, guint32 * id, guint64 * num)
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gboolean
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gboolean
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gst_ebml_read_sint (GstEbmlRead * ebml, guint32 * id, gint64 * num)
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gst_ebml_read_sint (GstEbmlRead * ebml, guint32 * id, gint64 * num)
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{
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{
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GstBuffer *buf;
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guint8 *data;
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guint8 *data;
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guint size, negative = 0, n = 0;
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guint size;
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gboolean negative = 0;
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if (!gst_ebml_read_buffer (ebml, id, &buf))
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if (!gst_ebml_read_bytes (ebml, id, &data, &size))
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return FALSE;
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return FALSE;
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size = GST_BUFFER_SIZE (buf);
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if (size < 1 || size > 8) {
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if (size < 1 || size > 8) {
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GST_ELEMENT_ERROR (ebml, STREAM, DEMUX, (NULL),
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GST_ELEMENT_ERROR (ebml, STREAM, DEMUX, (NULL),
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("Invalid integer element size %d at position %llu (0x%llx)",
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("Invalid integer element size %d at position %llu (0x%llx)",
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size, GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET (buf)));
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size, ebml->offset - size, ebml->offset - size));
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gst_buffer_unref (buf);
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return FALSE;
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return FALSE;
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}
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}
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buf = gst_buffer_make_writable (buf);
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*num = 0;
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if (*data & 0x80) {
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data = GST_BUFFER_DATA (buf);
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if (data[0] & 0x80) {
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||||||
negative = 1;
|
negative = 1;
|
||||||
data[0] &= ~0x80;
|
*num = *data & ~0x80;
|
||||||
|
size--;
|
||||||
|
data++;
|
||||||
}
|
}
|
||||||
|
|
||||||
*num = 0;
|
while (size > 0) {
|
||||||
while (n < size) {
|
*num = (*num << 8) | *data;
|
||||||
*num = (*num << 8) | data[n++];
|
size--;
|
||||||
|
data++;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* make signed */
|
/* make signed */
|
||||||
|
@ -515,8 +552,6 @@ gst_ebml_read_sint (GstEbmlRead * ebml, guint32 * id, gint64 * num)
|
||||||
*num = 0 - *num;
|
*num = 0 - *num;
|
||||||
}
|
}
|
||||||
|
|
||||||
gst_buffer_unref (buf);
|
|
||||||
|
|
||||||
return TRUE;
|
return TRUE;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -527,28 +562,22 @@ gst_ebml_read_sint (GstEbmlRead * ebml, guint32 * id, gint64 * num)
|
||||||
gboolean
|
gboolean
|
||||||
gst_ebml_read_float (GstEbmlRead * ebml, guint32 * id, gdouble * num)
|
gst_ebml_read_float (GstEbmlRead * ebml, guint32 * id, gdouble * num)
|
||||||
{
|
{
|
||||||
GstBuffer *buf;
|
|
||||||
guint8 *data;
|
guint8 *data;
|
||||||
guint size;
|
guint size;
|
||||||
|
|
||||||
if (!gst_ebml_read_buffer (ebml, id, &buf))
|
if (!gst_ebml_read_bytes (ebml, id, &data, &size))
|
||||||
return FALSE;
|
return FALSE;
|
||||||
|
|
||||||
data = GST_BUFFER_DATA (buf);
|
|
||||||
size = GST_BUFFER_SIZE (buf);
|
|
||||||
|
|
||||||
if (size != 4 && size != 8 && size != 10) {
|
if (size != 4 && size != 8 && size != 10) {
|
||||||
GST_ELEMENT_ERROR (ebml, STREAM, DEMUX, (NULL),
|
GST_ELEMENT_ERROR (ebml, STREAM, DEMUX, (NULL),
|
||||||
("Invalid float element size %d at position %llu (0x%llx)",
|
("Invalid float element size %d at position %llu (0x%llx)",
|
||||||
size, GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET (buf)));
|
size, ebml->offset - size, ebml->offset - size));
|
||||||
gst_buffer_unref (buf);
|
|
||||||
return FALSE;
|
return FALSE;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (size == 10) {
|
if (size == 10) {
|
||||||
GST_ELEMENT_ERROR (ebml, CORE, NOT_IMPLEMENTED, (NULL),
|
GST_ELEMENT_ERROR (ebml, CORE, NOT_IMPLEMENTED, (NULL),
|
||||||
("FIXME! 10-byte floats unimplemented"));
|
("FIXME! 10-byte floats unimplemented"));
|
||||||
gst_buffer_unref (buf);
|
|
||||||
return FALSE;
|
return FALSE;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -580,8 +609,6 @@ gst_ebml_read_float (GstEbmlRead * ebml, guint32 * id, gdouble * num)
|
||||||
*num = d;
|
*num = d;
|
||||||
}
|
}
|
||||||
|
|
||||||
gst_buffer_unref (buf);
|
|
||||||
|
|
||||||
return TRUE;
|
return TRUE;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -592,16 +619,15 @@ gst_ebml_read_float (GstEbmlRead * ebml, guint32 * id, gdouble * num)
|
||||||
gboolean
|
gboolean
|
||||||
gst_ebml_read_ascii (GstEbmlRead * ebml, guint32 * id, gchar ** str)
|
gst_ebml_read_ascii (GstEbmlRead * ebml, guint32 * id, gchar ** str)
|
||||||
{
|
{
|
||||||
GstBuffer *buf;
|
guint8 *data;
|
||||||
|
guint size;
|
||||||
|
|
||||||
if (!gst_ebml_read_buffer (ebml, id, &buf))
|
if (!gst_ebml_read_bytes (ebml, id, &data, &size))
|
||||||
return FALSE;
|
return FALSE;
|
||||||
|
|
||||||
*str = g_malloc (GST_BUFFER_SIZE (buf) + 1);
|
*str = g_malloc (size + 1);
|
||||||
memcpy (*str, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
|
memcpy (*str, data, size);
|
||||||
(*str)[GST_BUFFER_SIZE (buf)] = '\0';
|
(*str)[size] = '\0';
|
||||||
|
|
||||||
gst_buffer_unref (buf);
|
|
||||||
|
|
||||||
return TRUE;
|
return TRUE;
|
||||||
}
|
}
|
||||||
|
@ -678,15 +704,14 @@ gboolean
|
||||||
gst_ebml_read_binary (GstEbmlRead * ebml,
|
gst_ebml_read_binary (GstEbmlRead * ebml,
|
||||||
guint32 * id, guint8 ** binary, guint64 * length)
|
guint32 * id, guint8 ** binary, guint64 * length)
|
||||||
{
|
{
|
||||||
GstBuffer *buf;
|
guint8 *data;
|
||||||
|
guint size;
|
||||||
|
|
||||||
if (!gst_ebml_read_buffer (ebml, id, &buf))
|
if (!gst_ebml_read_bytes (ebml, id, &data, &size))
|
||||||
return FALSE;
|
return FALSE;
|
||||||
|
|
||||||
*length = GST_BUFFER_SIZE (buf);
|
*length = size;
|
||||||
*binary = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
|
*binary = g_memdup (data, size);
|
||||||
|
|
||||||
gst_buffer_unref (buf);
|
|
||||||
|
|
||||||
return TRUE;
|
return TRUE;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue