New API call burn_fifo_fill()

cdrskin/cdrskin_timestamp.h

@@ -1 +1 @@
-#define Cdrskin_timestamP "2009.11.25.122233"
+#define Cdrskin_timestamP "2009.11.25.160153"

libburn/file.c

@@ -562,13 +562,21 @@ int burn_fifo_inquire_status(struct burn_source *source,
 }
 
 
-int burn_fifo_peek_data(struct burn_source *source, char *buf, int bufsize,
+/* @param flag bit0= do not copy to buf but only wait until the fifo has read
+                     bufsize or input ended.
+                     The same happens if buf is NULL.
+               bit1= fill to max fifo size
+*/
+int burn_fifo_fill_data(struct burn_source *source, char *buf, int bufsize,
                         int flag)
 {
 	int size, free_bytes, ret, wait_count= 0;
 	char *status_text;
 	struct burn_source_fifo *fs = source->data;
 
+	if (buf == NULL)
+		flag |= 1;
+
 	/* Eventually start fifo thread by reading 0 bytes */
 	ret = fifo_read(source, (unsigned char *) NULL, 0);
 	if (ret<0)
@@ -578,11 +586,26 @@ int burn_fifo_peek_data(struct burn_source *source, char *buf, int bufsize,
 	while (1) {
 		ret= burn_fifo_inquire_status(source,
 					 &size, &free_bytes, &status_text);
-		if (size < bufsize) {
+		if (flag & 2) {
-			libdax_msgs_submit(libdax_messenger, -1, 0x0002015c,
+			bufsize = size - (size % fs->inp_read_size) -
-			LIBDAX_MSGS_SEV_FAILURE, LIBDAX_MSGS_PRIO_HIGH,
+					fs->inp_read_size;
-		 	"Fifo size is smaller than desired peek buffer", 0, 0);
+			if (bufsize <= 0)
-			return -1;
+				return 0;
+		}
+		if (size - fs->inp_read_size < bufsize) {
+			if (flag & 1) {
+				bufsize = size - (size % fs->inp_read_size) -
+						fs->inp_read_size;
+				if (bufsize <= 0)
+					return 0;
+			} else {
+				libdax_msgs_submit(libdax_messenger, -1,
+					0x0002015c, LIBDAX_MSGS_SEV_FAILURE,
+					 LIBDAX_MSGS_PRIO_HIGH,
+			 	"Fifo size too small for desired peek buffer",
+					 0, 0);
+				return -1;
+			}
 		}
 		if (fs->out_counter > 0 || (ret & 4) || fs->buf == NULL) {
 			libdax_msgs_submit(libdax_messenger, -1, 0x0002015e,
@@ -598,17 +621,33 @@ int burn_fifo_peek_data(struct burn_source *source, char *buf, int bufsize,
 		"libburn_DEBUG: after waiting cycle %d : fifo %s , %d bytes\n",
 			 wait_count, status_text, size - free_bytes);
 			*/
-
+			if(!(flag & 1))
-			memcpy(buf, fs->buf, bufsize);
+				memcpy(buf, fs->buf, bufsize);
 			return 1;
 		}
-		if (ret&2) { /* input has ended, not enough data arrived */
+
+		if (ret & 2) {
+			/* input has ended, not enough data arrived */
+			if (flag & 1)
+				return 0;
 			libdax_msgs_submit(libdax_messenger, -1, 0x0002015d,
 			LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
 		 	"Fifo input ended short of desired peek buffer size",
 			0, 0);
 			return 0;
 		}
+
+		if (free_bytes < fs->inp_read_size) {
+			/* Usable fifo size filled, not enough data arrived */
+			if (flag & 1)
+				return 0;
+			libdax_msgs_submit(libdax_messenger, -1, 0x00020174,
+			LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
+		 	"Fifo alignment does not allow desired read size",
+			0, 0);
+			return 0;
+		}
+
 		usleep(100000);
 		wait_count++;
 
@@ -622,3 +661,20 @@ int burn_fifo_peek_data(struct burn_source *source, char *buf, int bufsize,
 	}
 	return(0);
 }
+
+
+/* ts A80713 : API */
+int burn_fifo_peek_data(struct burn_source *source, char *buf, int bufsize,
+                        int flag)
+{
+	return burn_fifo_fill_data(source, buf, bufsize, 0);
+}
+
+
+/* ts A91125 : API */
+int burn_fifo_fill(struct burn_source *source, int bufsize, int flag)
+{
+	return burn_fifo_fill_data(source, NULL, bufsize,
+					1 | ((flag & 1) << 1));
+}
+

libburn/libburn.h

@@ -1802,6 +1802,8 @@ struct burn_source *burn_file_source_new(const char *path,
     on the operating system and on compile time options of libburn.
     You may use this call instead of open(2) for opening file descriptors
     which shall be handed to burn_fd_source_new().
+    This should only be done for tracks with BURN_BLOCK_MODE1 (2048 bytes
+    per block).
 
     If you use this call then you MUST allocate the buffers which you use
     with read(2) by call burn_os_alloc_buffer(). Read sizes MUST be a multiple
@@ -1926,12 +1928,11 @@ struct burn_source *burn_fifo_source_new(struct burn_source *inp,
 int burn_fifo_inquire_status(struct burn_source *fifo, int *size, 
                             int *free_bytes, char **status_text);
 
-
 /* ts A80713 */
 /** Obtain a preview of the first input data of a fifo which was created
     by burn_fifo_source_new(). The data will later be delivered normally to
     the consumer track of the fifo.
-    bufsize may not be larger than the fifo size (chunk_size * chunks).
+    bufsize may not be larger than the fifo size (chunk_size * chunks) - 32k.
     This call will succeed only if data consumption by the track has not
     started yet, i.e. best before the call to burn_disc_write().
     It will start the worker thread of the fifo with the expectable side
@@ -1950,6 +1951,22 @@ int burn_fifo_inquire_status(struct burn_source *fifo, int *size,
 int burn_fifo_peek_data(struct burn_source *source, char *buf, int bufsize,
                         int flag);
 
+/* ts A91125 */
+/** Start the fifo worker thread and wait either until the requested number
+    of bytes have arrived or until it becomes clear that this will not happen.
+    Filling will go on asynchronously after burn_fifo_fill() returned.
+    This call and burn_fifo_peek_data() do not disturb each other.
+    @param fifo     The fifo object to start
+    @param fill     Number of bytes desired. Expect to get return 1 if 
+                    at least fifo size - 32k were read.
+    @param flag     Bitfield for control purposes.
+                    bit0= fill fifo to maximum size
+    @return <0 on severe error, 0 if not enough data,
+             1 if desired amount or fifo full
+    @since 0.7.4
+*/
+int burn_fifo_fill(struct burn_source *source, int bufsize, int flag);
+
 
 /* ts A70328 */
 /** Sets a fixed track size after the data source object has already been

libburn/libdax_msgs.h

@@ -528,7 +528,7 @@ Range "scdbackup"          :  0x00020000 to 0x0002ffff
  0x00020159 (DEBUG,HIGH)   = TOC Format 0 returns inconsistent data
  0x0002015a (NOTE,HIGH)    = Could not examine busy device
  0x0002015b (HINT,HIGH)    = Busy '...' seems to be a hard disk, as '...1' exists
- 0x0002015c (FAILURE,HIGH) = Fifo size is smaller than desired peek buffer
+ 0x0002015c (FAILURE,HIGH) = Fifo size too small for desired peek buffer
  0x0002015d (FAILURE,HIGH) = Fifo input ended short of desired peek buffer size
  0x0002015e (FATAL,HIGH)   = Fifo is already under consumption when peeking
  0x0002015f (MISHAP,HIGH)  = Damaged CD table-of-content detected and truncated
@@ -551,6 +551,7 @@ Range "scdbackup"          :  0x00020000 to 0x0002ffff
  0x00020171 (NOTE,HIGH)    = Closing BD-R with accidently open session
  0x00020172 (SORRY,HIGH)   = Read start address larger than number of readable blocks
  0x00020173 (FAILURE,HIGH) = Drive tells NWA smaller than last written address
+ 0x00020174 (SORRY,HIGH)   = Fifo alignment does not allow desired read size
  
 
  libdax_audioxtr: