mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 18:21:04 +00:00
faad: use adapter rather than temporary buffer
This commit is contained in:
Mark Nauwelaerts
parent
cca1fad250
commit
159fe8a1a0
2 changed files with 70 additions and 75 deletions
|
|
@ -135,6 +135,7 @@ static void gst_faad_base_init (GstFaadClass * klass);
|
|||
static void gst_faad_class_init (GstFaadClass * klass);
|
||||
static void gst_faad_init (GstFaad * faad);
|
||||
static void gst_faad_reset (GstFaad * faad);
|
||||
static void gst_faad_finalize (GObject * object);
|
||||
|
||||
static void clear_queued (GstFaad * faad);
|
||||
|
||||
|
|
@ -196,9 +197,12 @@ static void
|
|||
gst_faad_class_init (GstFaadClass * klass)
|
||||
{
|
||||
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
||||
|
||||
parent_class = g_type_class_peek_parent (klass);
|
||||
|
||||
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_faad_finalize);
|
||||
|
||||
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_faad_change_state);
|
||||
}
|
||||
|
||||
|
|
@ -222,6 +226,8 @@ gst_faad_init (GstFaad * faad)
|
|||
GST_DEBUG_FUNCPTR (gst_faad_src_event));
|
||||
gst_element_add_pad (GST_ELEMENT (faad), faad->srcpad);
|
||||
|
||||
faad->adapter = gst_adapter_new ();
|
||||
|
||||
gst_faad_reset (faad);
|
||||
}
|
||||
|
||||
|
|
@ -240,13 +246,20 @@ gst_faad_reset (GstFaad * faad)
|
|||
faad->bytes_in = 0;
|
||||
faad->sum_dur_out = 0;
|
||||
faad->error_count = 0;
|
||||
if (faad->tempbuf) {
|
||||
gst_buffer_unref (faad->tempbuf);
|
||||
faad->tempbuf = NULL;
|
||||
}
|
||||
gst_adapter_clear (faad->adapter);
|
||||
clear_queued (faad);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_faad_finalize (GObject * object)
|
||||
{
|
||||
GstFaad *faad = GST_FAAD (object);
|
||||
|
||||
g_object_unref (faad->adapter);
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_faad_send_tags (GstFaad * faad)
|
||||
{
|
||||
|
|
@ -348,10 +361,7 @@ gst_faad_setcaps (GstPad * pad, GstCaps * caps)
|
|||
|
||||
faad->init = TRUE;
|
||||
|
||||
if (faad->tempbuf) {
|
||||
gst_buffer_unref (faad->tempbuf);
|
||||
faad->tempbuf = NULL;
|
||||
}
|
||||
gst_adapter_clear (faad->adapter);
|
||||
} else if ((value = gst_structure_get_value (str, "framed")) &&
|
||||
g_value_get_boolean (value) == TRUE) {
|
||||
faad->packetised = TRUE;
|
||||
|
|
@ -604,19 +614,13 @@ gst_faad_sink_event (GstPad * pad, GstEvent * event)
|
|||
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_FLUSH_STOP:
|
||||
if (faad->tempbuf != NULL) {
|
||||
gst_buffer_unref (faad->tempbuf);
|
||||
faad->tempbuf = NULL;
|
||||
}
|
||||
gst_adapter_clear (faad->adapter);
|
||||
clear_queued (faad);
|
||||
res = gst_pad_push_event (faad->srcpad, event);
|
||||
break;
|
||||
case GST_EVENT_EOS:
|
||||
gst_faad_drain (faad);
|
||||
if (faad->tempbuf != NULL) {
|
||||
gst_buffer_unref (faad->tempbuf);
|
||||
faad->tempbuf = NULL;
|
||||
}
|
||||
gst_adapter_clear (faad->adapter);
|
||||
res = gst_pad_push_event (faad->srcpad, event);
|
||||
break;
|
||||
case GST_EVENT_NEWSEGMENT:
|
||||
|
|
@ -888,20 +892,18 @@ gst_faad_update_caps (GstFaad * faad, faacDecFrameInfo * info)
|
|||
* gst/typefind/) for ADTS because 12 bits isn't very reliable.
|
||||
*/
|
||||
static gboolean
|
||||
gst_faad_sync (GstFaad * faad, GstBuffer * buf, guint * off)
|
||||
gst_faad_sync (GstFaad * faad, guint8 * data, guint size, guint * off)
|
||||
{
|
||||
guint8 *data = GST_BUFFER_DATA (buf);
|
||||
guint size = GST_BUFFER_SIZE (buf), n;
|
||||
guint n = 0;
|
||||
gint snc;
|
||||
gboolean ret = FALSE;
|
||||
|
||||
GST_LOG_OBJECT (faad, "Finding syncpoint");
|
||||
|
||||
/* check for too small a buffer */
|
||||
if (size < 3)
|
||||
return FALSE;
|
||||
goto exit;
|
||||
|
||||
/* FIXME: for no-sync, we go over the same data for every new buffer.
|
||||
* We should save the information somewhere. */
|
||||
for (n = 0; n < size - 3; n++) {
|
||||
snc = GST_READ_UINT16_BE (&data[n]);
|
||||
if ((snc & 0xfff6) == 0xfff0) {
|
||||
|
|
@ -914,37 +916,41 @@ gst_faad_sync (GstFaad * faad, GstBuffer * buf, guint * off)
|
|||
|
||||
if (size - n < 5) {
|
||||
GST_LOG_OBJECT (faad, "Not enough data to parse ADTS header");
|
||||
return FALSE;
|
||||
break;
|
||||
}
|
||||
|
||||
*off = n;
|
||||
len = ((data[n + 3] & 0x03) << 11) |
|
||||
(data[n + 4] << 3) | ((data[n + 5] & 0xe0) >> 5);
|
||||
if (n + len + 2 >= size) {
|
||||
GST_LOG_OBJECT (faad, "Next frame is not within reach");
|
||||
return FALSE;
|
||||
break;
|
||||
}
|
||||
|
||||
snc = GST_READ_UINT16_BE (&data[n + len]);
|
||||
if ((snc & 0xfff6) == 0xfff0) {
|
||||
GST_LOG_OBJECT (faad,
|
||||
"Found ADTS syncpoint at offset 0x%x (framelen %u)", n, len);
|
||||
return TRUE;
|
||||
ret = TRUE;
|
||||
break;
|
||||
}
|
||||
|
||||
GST_LOG_OBJECT (faad, "No next frame found... (should be at 0x%x)",
|
||||
n + len);
|
||||
} else if (!memcmp (&data[n], "ADIF", 4)) {
|
||||
/* we have an ADIF syncpoint. 4 bytes is enough. */
|
||||
*off = n;
|
||||
GST_LOG_OBJECT (faad, "Found ADIF syncpoint at offset 0x%x", n);
|
||||
return TRUE;
|
||||
ret = TRUE;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
exit:
|
||||
*off = n;
|
||||
|
||||
if (!ret)
|
||||
GST_LOG_OBJECT (faad, "Found no syncpoint");
|
||||
|
||||
return FALSE;
|
||||
return ret;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
|
|
@ -970,7 +976,7 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
|
|||
{
|
||||
GstFlowReturn ret = GST_FLOW_OK;
|
||||
guint input_size;
|
||||
guint skip_bytes = 0;
|
||||
guint available;
|
||||
guchar *input_data;
|
||||
GstFaad *faad;
|
||||
GstBuffer *outbuf;
|
||||
|
|
@ -978,16 +984,19 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
|
|||
void *out;
|
||||
gboolean run_loop = TRUE;
|
||||
guint sync_off;
|
||||
GstClockTime ts;
|
||||
|
||||
faad = GST_FAAD (gst_pad_get_parent (pad));
|
||||
|
||||
GST_LOG_OBJECT (faad, "buffer of size %d with ts: %" GST_TIME_FORMAT
|
||||
", duration %" GST_TIME_FORMAT, GST_BUFFER_SIZE (buffer),
|
||||
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
|
||||
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
|
||||
|
||||
if (GST_BUFFER_IS_DISCONT (buffer)) {
|
||||
gst_faad_drain (faad);
|
||||
faacDecPostSeekReset (faad->handle, 0);
|
||||
if (faad->tempbuf != NULL) {
|
||||
gst_buffer_unref (faad->tempbuf);
|
||||
faad->tempbuf = NULL;
|
||||
}
|
||||
gst_adapter_clear (faad->adapter);
|
||||
faad->discont = TRUE;
|
||||
}
|
||||
|
||||
|
|
@ -995,30 +1004,25 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
|
|||
faad->bytes_in += GST_BUFFER_SIZE (buffer);
|
||||
GST_OBJECT_UNLOCK (faad);
|
||||
|
||||
if (GST_BUFFER_TIMESTAMP (buffer) != GST_CLOCK_TIME_NONE) {
|
||||
/* some demuxers send multiple buffers in a row
|
||||
* with the same timestamp (e.g. matroskademux) */
|
||||
if (GST_BUFFER_TIMESTAMP (buffer) != faad->prev_ts) {
|
||||
faad->next_ts = GST_BUFFER_TIMESTAMP (buffer);
|
||||
faad->prev_ts = GST_BUFFER_TIMESTAMP (buffer);
|
||||
}
|
||||
GST_LOG_OBJECT (faad, "Timestamp on incoming buffer: %" GST_TIME_FORMAT
|
||||
", next_ts: %" GST_TIME_FORMAT,
|
||||
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
|
||||
GST_TIME_ARGS (faad->next_ts));
|
||||
}
|
||||
/* buffer + remaining data */
|
||||
if (faad->tempbuf) {
|
||||
buffer = gst_buffer_join (faad->tempbuf, buffer);
|
||||
faad->tempbuf = NULL;
|
||||
}
|
||||
gst_adapter_push (faad->adapter, buffer);
|
||||
buffer = NULL;
|
||||
|
||||
input_data = GST_BUFFER_DATA (buffer);
|
||||
input_size = GST_BUFFER_SIZE (buffer);
|
||||
ts = gst_adapter_prev_timestamp (faad->adapter, NULL);
|
||||
if (GST_CLOCK_TIME_IS_VALID (ts) && (ts != faad->prev_ts))
|
||||
faad->prev_ts = faad->next_ts = ts;
|
||||
|
||||
available = gst_adapter_available (faad->adapter);
|
||||
input_size = available;
|
||||
|
||||
if (G_UNLIKELY (!available))
|
||||
goto out;
|
||||
|
||||
input_data = (guchar *) gst_adapter_peek (faad->adapter, available);
|
||||
|
||||
if (!faad->packetised) {
|
||||
if (!gst_faad_sync (faad, buffer, &sync_off)) {
|
||||
goto next;
|
||||
if (!gst_faad_sync (faad, input_data, input_size, &sync_off)) {
|
||||
input_size -= sync_off;
|
||||
goto out;
|
||||
} else {
|
||||
input_data += sync_off;
|
||||
input_size -= sync_off;
|
||||
|
|
@ -1053,7 +1057,6 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
|
|||
(guint32) rate, ch);
|
||||
}
|
||||
|
||||
skip_bytes = 0;
|
||||
faad->init = TRUE;
|
||||
|
||||
/* make sure we create new caps below */
|
||||
|
|
@ -1063,7 +1066,7 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
|
|||
}
|
||||
|
||||
/* decode cycle */
|
||||
info.bytesconsumed = input_size - skip_bytes;
|
||||
info.bytesconsumed = input_size;
|
||||
info.error = 0;
|
||||
|
||||
if (!faad->packetised) {
|
||||
|
|
@ -1082,14 +1085,15 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
|
|||
}
|
||||
}
|
||||
|
||||
out = faacDecDecode (faad->handle, &info, input_data + skip_bytes,
|
||||
input_size - skip_bytes);
|
||||
out = faacDecDecode (faad->handle, &info, input_data, input_size);
|
||||
|
||||
if (info.error > 0) {
|
||||
GST_WARNING_OBJECT (faad, "decoding error: %s",
|
||||
faacDecGetErrorMessage (info.error));
|
||||
/* mark discont for the next buffer */
|
||||
faad->discont = TRUE;
|
||||
/* flush a bit, arranges for resync next time */
|
||||
input_size--;
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
|
@ -1160,22 +1164,12 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
|
|||
}
|
||||
}
|
||||
|
||||
next:
|
||||
|
||||
/* Keep the leftovers in raw stream */
|
||||
if (input_size > 0 && !faad->packetised) {
|
||||
if (input_size < GST_BUFFER_SIZE (buffer)) {
|
||||
faad->tempbuf = gst_buffer_create_sub (buffer,
|
||||
GST_BUFFER_SIZE (buffer) - input_size, input_size);
|
||||
} else {
|
||||
faad->tempbuf = buffer;
|
||||
gst_buffer_ref (buffer);
|
||||
}
|
||||
}
|
||||
|
||||
out:
|
||||
/* in raw case: (pretend) all consumed */
|
||||
if (faad->packetised)
|
||||
input_size = 0;
|
||||
gst_adapter_flush (faad->adapter, available - input_size);
|
||||
|
||||
gst_buffer_unref (buffer);
|
||||
gst_object_unref (faad);
|
||||
|
||||
return ret;
|
||||
|
|
|
|||
|
|
@ -21,6 +21,7 @@
|
|||
#define __GST_FAAD_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/base/gstadapter.h>
|
||||
#ifdef FAAD_IS_NEAAC
|
||||
#include <neaacdec.h>
|
||||
#else
|
||||
|
|
@ -53,7 +54,7 @@ typedef struct _GstFaad {
|
|||
|
||||
guint8 fake_codec_data[2];
|
||||
|
||||
GstBuffer *tempbuf; /* used to keep input leftovers */
|
||||
GstAdapter *adapter;
|
||||
|
||||
/* FAAD object */
|
||||
faacDecHandle handle;
|
||||
|
|
|
|||
Loading…
Reference in a new issue