X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=aac_afh.c;h=a3a24bc0b2f4225050ca90b72a059788f3824249;hp=b091db03df14212bdb3d91a36c737b24170cd64f;hb=b829b61f516298a0de3907cd4c30aef189dd8dd4;hpb=2349dbb8c69a97f271c8cb8440016ac5afc34dab

diff --git a/aac_afh.c b/aac_afh.c
index b091db03..a3a24bc0 100644
--- a/aac_afh.c
+++ b/aac_afh.c
@@ -25,9 +25,11 @@
 #include "server.cmdline.h"
 #include "server.h"
 #include "afs.h"
+#include "afh.h"
 #include "error.h"
 #include "string.h"
 #include "aac.h"
+#include "fd.h"
 
 /* must be big enough to hold header */
 #define DEFAULT_INBUF_SIZE 65536
@@ -36,16 +38,19 @@ static FILE *infile;
 static int inbuf_size;
 static unsigned char *inbuf;
 static size_t inbuf_len;
-struct audio_format *af;
+struct audio_format_handler *af;
 static size_t num_chunks;
 static size_t entry;
 
 static size_t *chunk_table;
 NeAACDecHandle handle;
 
-
 static void aac_close_audio_file(void)
 {
+	if (!infile)
+		return;
+	fclose(infile);
+	infile = NULL;
 }
 
 static int aac_find_stsz(unsigned char *buf, unsigned buflen, size_t *skip)
@@ -105,11 +110,24 @@ static int read_chunk_table(size_t skip)
 		sum += aac_read_int32(inbuf + skip);
 		chunk_table[i] = sum;
 		skip += 4;
-		if (i < 10 || i > num_chunks - 10)
+		if (i < 10 || i + 10 > num_chunks)
 			PARA_DEBUG_LOG("offset #%d: %zu\n", i, chunk_table[i]);
 	}
 	return 1;
+}
 
+long unsigned aac_set_chunk_tv(mp4AudioSpecificConfig *mp4ASC)
+{
+	float tmp = mp4ASC->sbr_present_flag == 1? 2047 : 1023,
+		ms = 1000.0 * num_chunks * tmp / mp4ASC->samplingFrequency;
+	struct timeval total;
+
+	ms2tv(ms, &total);
+	tv_divide(num_chunks, &total, &af->chunk_tv);
+	PARA_INFO_LOG("%luHz, %fs (%zd x %lums)\n",
+		mp4ASC->samplingFrequency, ms / 1000,
+		num_chunks, tv2ms(&af->chunk_tv));
+	return ms / 1000;
 }
 
 /*
@@ -129,12 +147,9 @@ static int aac_get_file_info(FILE *file, char *info_str, long unsigned *frames,
 	inbuf = para_malloc(inbuf_size);
 	infile = file;
 
-	PARA_INFO_LOG("file: %p\n", file);
 	ret = read(fileno(infile), inbuf, inbuf_size);
-	PARA_INFO_LOG("read %d bytes\n", ret);
 	if (ret <= 0)
 		return -E_AAC_READ;
-	PARA_INFO_LOG("checking aac %d bytes\n", ret);
 	inbuf_len = ret;
 	ret = aac_find_esds(inbuf, inbuf_len, &skip);
 	if (ret < 0)
@@ -147,17 +162,15 @@ static int aac_get_file_info(FILE *file, char *info_str, long unsigned *frames,
 		return -E_AACDEC_INIT;
 	skip += ret;
 	PARA_INFO_LOG("rate: %lu, channels: %d\n", rate, channels);
-	ret = NeAACDecAudioSpecificConfig(inbuf + skip, inbuf_len - skip, &mp4ASC);
-	if (ret >= 0) {
-		PARA_DEBUG_LOG("mp4ASC.samplingFrequency: %lu\n",
-			mp4ASC.samplingFrequency);
-	} else
-		PARA_WARNING_LOG("no mp4ASC %s\n", "");
-
+	ret = NeAACDecAudioSpecificConfig(inbuf + skip, inbuf_len - skip,
+		&mp4ASC);
+	if (ret < 0)
+		return -E_MP4ASC;
 	ret = read_chunk_table(skip);
 	if (ret < 0)
 		return ret;
 	*frames = num_chunks;
+	*seconds = aac_set_chunk_tv(&mp4ASC);
 	for (;;) {
 		ret = aac_find_entry_point(inbuf, inbuf_len, &skip);
 		if (ret >= 0)
@@ -168,43 +181,21 @@ static int aac_get_file_info(FILE *file, char *info_str, long unsigned *frames,
 		PARA_INFO_LOG("next buffer: %d bytes\n", ret);
 	}
 	entry = ret;
-	PARA_INFO_LOG("offset table has %zu entries, entry: %zu\n", num_chunks,
-		entry);
-#if 1
 	sprintf(info_str, "audio_file_info1:%zu x %lums\n"
 		"audio_file_info2:\n"
 		"audio_file_info3:\n",
 		num_chunks,
 		tv2ms(&af->chunk_tv));
-#endif
-#if 1
-	{
-	struct timeval total_tv;
-	tv_scale(num_chunks, &af->chunk_tv, &total_tv);
-	*seconds = tv2ms(&total_tv) / 1000;
-	PARA_INFO_LOG("%d seconds, %zu chunks\n", *seconds, num_chunks);
-	}
-#endif
+	tv_scale(20, &af->chunk_tv, &af->eof_tv);
 	return 1;
 }
 
 /*
- * Simple stream reposition routine
+ * nothing to do as we'll seek to the correct offset in aac read_chunk() anyway
  */
-static int aac_reposition_stream(long unsigned request)
+static int aac_reposition_stream(__a_unused long unsigned request)
 {
 	return 1;
-//	return -E_AAC_REPOS;
-}
-
-static __must_check int para_fread(void *ptr, size_t size, size_t nmemb, FILE *stream)
-{
-	size_t res = fread(ptr, size, nmemb, stream);
-	if (res == nmemb)
-		return size * nmemb;
-	if (feof(stream))
-		return 0;
-	return -E_FREAD;
 }
 
 static char *aac_read_chunk(long unsigned current_chunk, ssize_t *len)
@@ -239,7 +230,9 @@ static char *aac_read_chunk(long unsigned current_chunk, ssize_t *len)
 	return (char *)inbuf;
 }
 
-void aac_afh_init(void *p)
+static const char* aac_suffixes[] = {"m4a", "mp4", NULL};
+/** the init function of the aac audio format handler */
+void aac_afh_init(struct audio_format_handler *p)
 {
 	af = p;
 	af->reposition_stream = aac_reposition_stream;
@@ -247,7 +240,5 @@ void aac_afh_init(void *p)
 	af->read_chunk = aac_read_chunk;
 	af->close_audio_file = aac_close_audio_file;
 	af->get_header_info = NULL;
-	af->chunk_tv.tv_sec = 0;
-	af->chunk_tv.tv_usec = 23120;
-	tv_scale(3, &af->chunk_tv, &af->eof_tv);
+	af->suffixes = aac_suffixes;
 }