random/mysql selector: make it find m4a files
[paraslash.git] / aac_afh.c
index 9cab392..55efeef 100644 (file)
--- a/aac_afh.c
+++ b/aac_afh.c
  *     along with this program; if not, write to the Free Software
  *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  */
-/** \file aac_afh.c para_server's aac audio format handler */
+/*
+ * based in parts on libfaad, Copyright (C) 2003-2005 M. Bakker,
+ * Ahead Software AG
+ */
 
+/** \file aac_afh.c para_server's aac audio format handler */
 
 #include "server.cmdline.h"
 #include "server.h"
@@ -24,6 +28,7 @@
 #include "error.h"
 #include "string.h"
 #include "aac.h"
+#include "fd.h"
 
 /* must be big enough to hold header */
 #define DEFAULT_INBUF_SIZE 65536
 static FILE *infile;
 static int inbuf_size;
 static unsigned char *inbuf;
-static unsigned inbuf_len;
-struct audio_format *af;
-
-static unsigned num_chunks, entry;
+static size_t inbuf_len;
+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 read_stsz(unsigned skip)
+static int aac_find_stsz(unsigned char *buf, unsigned buflen, size_t *skip)
+{
+       int i;
+
+       for (i = 0; i + 16 < buflen; i++) {
+               unsigned char *p = buf + i;
+               unsigned sample_count, sample_size;
+
+               if (p[0] != 's' || p[1] != 't' || p[2] != 's' || p[3] != 'z')
+                       continue;
+               PARA_INFO_LOG("found stsz@%d\n", i);
+               i += 8;
+               sample_size = aac_read_int32(buf + i);
+               PARA_INFO_LOG("sample size: %d\n", sample_size);
+               i += 4;
+               sample_count = aac_read_int32(buf + i);
+               i += 4;
+               PARA_INFO_LOG("sample count: %d\n", sample_count);
+               *skip = i;
+               return sample_count;
+       }
+       PARA_WARNING_LOG("stsz not found, buflen: %d\n", buflen);
+       return -E_STSZ;
+}
+
+static int read_chunk_table(size_t skip)
 {
        int ret, i;
-       long unsigned sum = 0;
+       size_t sum = 0;
 
        for (;;) {
                ret = aac_find_stsz(inbuf, inbuf_len, &skip);
@@ -59,7 +92,7 @@ static int read_stsz(unsigned skip)
                PARA_INFO_LOG("next buffer: %d bytes\n", ret);
        }
        num_chunks = ret;
-       PARA_INFO_LOG("sz table has %d entries\n", num_chunks);
+       PARA_INFO_LOG("sz table has %zu entries\n", num_chunks);
        free(chunk_table);
        chunk_table = para_malloc(num_chunks * sizeof(size_t));
        for (i = 0; i < num_chunks; i++) {
@@ -71,26 +104,26 @@ static int read_stsz(unsigned skip)
                                return -E_AAC_READ;
                        inbuf_len = ret + skip;
                        skip = 0;
-                       PARA_INFO_LOG("next buffer: %d bytes\n", inbuf_len);
+                       PARA_INFO_LOG("next buffer: %zu bytes\n", inbuf_len);
                }
                sum += aac_read_int32(inbuf + skip);
                chunk_table[i] = sum;
                skip += 4;
                if (i < 10 || i > num_chunks - 10)
-                       PARA_DEBUG_LOG("offset #%d: %d\n", i, chunk_table[i]);
+                       PARA_DEBUG_LOG("offset #%d: %zu\n", i, chunk_table[i]);
        }
        return 1;
 
 }
 
-
 /*
  * Init m4a file and write some tech data to given pointers.
  */
 static int aac_get_file_info(FILE *file, char *info_str, long unsigned *frames,
        int *seconds)
 {
-       int ret, skip, decoder_len;
+       int ret, decoder_len;
+       size_t skip;
        unsigned long rate = 0;
        unsigned char channels = 0;
        mp4AudioSpecificConfig mp4ASC;
@@ -125,11 +158,12 @@ static int aac_get_file_info(FILE *file, char *info_str, long unsigned *frames,
        } else
                PARA_WARNING_LOG("no mp4ASC %s\n", "");
 
-       ret = read_stsz(skip);
+       ret = read_chunk_table(skip);
        if (ret < 0)
                return ret;
+       *frames = num_chunks;
        for (;;) {
-               ret = aac_find_stco(inbuf, inbuf_len, &skip);
+               ret = aac_find_entry_point(inbuf, inbuf_len, &skip);
                if (ret >= 0)
                        break;
                ret = read(fileno(infile), inbuf, inbuf_size);
@@ -137,12 +171,11 @@ static int aac_get_file_info(FILE *file, char *info_str, long unsigned *frames,
                        return -E_AAC_READ;
                PARA_INFO_LOG("next buffer: %d bytes\n", ret);
        }
-       *frames = ret;
-       entry = aac_read_int32(inbuf + skip);
-       PARA_INFO_LOG("offset table has %d entries\, entry: %zd\n", num_chunks,
+       entry = ret;
+       PARA_INFO_LOG("offset table has %zu entries, entry: %zu\n", num_chunks,
                entry);
 #if 1
-       sprintf(info_str, "audio_file_info1:%d x %lums\n"
+       sprintf(info_str, "audio_file_info1:%zu x %lums\n"
                "audio_file_info2:\n"
                "audio_file_info3:\n",
                num_chunks,
@@ -153,7 +186,7 @@ static int aac_get_file_info(FILE *file, char *info_str, long unsigned *frames,
        struct timeval total_tv;
        tv_scale(num_chunks, &af->chunk_tv, &total_tv);
        *seconds = tv2ms(&total_tv) / 1000;
-       PARA_INFO_LOG("%d seconds, %d chunks\n", *seconds, num_chunks);
+       PARA_INFO_LOG("%d seconds, %zu chunks\n", *seconds, num_chunks);
        }
 #endif
        return 1;
@@ -164,20 +197,11 @@ static int aac_get_file_info(FILE *file, char *info_str, long unsigned *frames,
  */
 static int aac_reposition_stream(long unsigned request)
 {
-       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;
+       return 1;
+//     return -E_AAC_REPOS;
 }
 
-char *aac_read_chunk(long unsigned current_chunk, ssize_t *len)
+static char *aac_read_chunk(long unsigned current_chunk, ssize_t *len)
 {
        int ret;
        size_t pos;
@@ -186,14 +210,11 @@ char *aac_read_chunk(long unsigned current_chunk, ssize_t *len)
        if (current_chunk >= num_chunks)
                return NULL;
        if (!current_chunk) {
-               *len = entry;
-               pos = 0;
-       } else if (current_chunk == 1) {
                *len = chunk_table[0];
                pos = entry;
        } else {
-               *len = chunk_table[current_chunk - 1] - chunk_table[current_chunk - 2];
-               pos = entry + chunk_table[current_chunk - 2];
+               *len = chunk_table[current_chunk] - chunk_table[current_chunk - 1];
+               pos = entry + chunk_table[current_chunk - 1];
        }
        if (inbuf_size < *len) {
                inbuf = para_realloc(inbuf, *len);
@@ -212,6 +233,8 @@ char *aac_read_chunk(long unsigned current_chunk, ssize_t *len)
        return (char *)inbuf;
 }
 
+static const char* aac_suffixes[] = {"m4a", NULL};
+/** the init function of the aac audio format handler */
 void aac_afh_init(void *p)
 {
        af = p;
@@ -223,4 +246,5 @@ void aac_afh_init(void *p)
        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;
 }