diff options
Diffstat (limited to 'faad2/src/plugins/mpeg4ip/aa_file.cpp')
| -rw-r--r-- | faad2/src/plugins/mpeg4ip/aa_file.cpp | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/faad2/src/plugins/mpeg4ip/aa_file.cpp b/faad2/src/plugins/mpeg4ip/aa_file.cpp new file mode 100644 index 0000000..a0cccb9 --- /dev/null +++ b/faad2/src/plugins/mpeg4ip/aa_file.cpp @@ -0,0 +1,130 @@ +/*
+** MPEG4IP plugin for FAAD2
+** Copyright (C) 2003 Bill May wmay@cisco.com
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** $Id: aa_file.cpp,v 1.2 2004/01/05 14:05:12 menno Exp $
+**/
+/*
+ * aa_file.cpp - create media structure for aac files
+ */
+
+#include "faad2.h"
+codec_data_t *aac_file_check (lib_message_func_t message,
+ const char *name,
+ double *max,
+ char *desc[4]
+#ifdef HAVE_PLUGIN_VERSION_0_8
+ , CConfigSet *pConfig
+#endif
+)
+{
+ aac_codec_t *aac;
+ int len = strlen(name);
+ if (strcasecmp(name + len - 4, ".aac") != 0) {
+ return (NULL);
+ }
+
+ aac = MALLOC_STRUCTURE(aac_codec_t);
+ memset(aac, 0, sizeof(*aac));
+ *max = 0;
+
+ aac->m_buffer = (uint8_t *)malloc(MAX_READ_BUFFER);
+ aac->m_buffer_size_max = MAX_READ_BUFFER;
+ aac->m_ifile = fopen(name, FOPEN_READ_BINARY);
+ if (aac->m_ifile == NULL) {
+ free(aac);
+ return NULL;
+ }
+ aac->m_output_frame_size = 1024;
+ aac->m_info = faacDecOpen(); // use defaults here...
+ aac->m_buffer_size = fread(aac->m_buffer,
+ 1,
+ aac->m_buffer_size_max,
+ aac->m_ifile);
+
+ unsigned long freq;
+ unsigned char chans;
+
+ faacDecInit(aac->m_info, (unsigned char *)aac->m_buffer,
+ aac->m_buffer_size, &freq, &chans);
+ // may want to actually decode the first frame...
+ if (freq == 0) {
+ message(LOG_ERR, aaclib, "Couldn't determine AAC frame rate");
+ aac_close((codec_data_t *)aac);
+ return (NULL);
+ }
+ aac->m_freq = freq;
+ aac->m_chans = chans;
+ aac->m_faad_inited = 1;
+ aac->m_framecount = 0;
+ return ((codec_data_t *)aac);
+}
+
+
+int aac_file_next_frame (codec_data_t *your,
+ uint8_t **buffer,
+ uint64_t *ts)
+{
+ aac_codec_t *aac = (aac_codec_t *)your;
+
+ if (aac->m_buffer_on > 0) {
+ memmove(aac->m_buffer,
+ &aac->m_buffer[aac->m_buffer_on],
+ aac->m_buffer_size - aac->m_buffer_on);
+ }
+ aac->m_buffer_size -= aac->m_buffer_on;
+ aac->m_buffer_size += fread(aac->m_buffer + aac->m_buffer_size,
+ 1,
+ aac->m_buffer_size_max - aac->m_buffer_size,
+ aac->m_ifile);
+ aac->m_buffer_on = 0;
+ if (aac->m_buffer_size == 0) return 0;
+
+
+ uint64_t calc;
+ calc = aac->m_framecount * 1024 * M_LLU;
+ calc /= aac->m_freq;
+ *ts = calc;
+ *buffer = aac->m_buffer;
+ aac->m_framecount++;
+ return (aac->m_buffer_size);
+}
+
+void aac_file_used_for_frame (codec_data_t *ifptr,
+ uint32_t bytes)
+{
+ aac_codec_t *aac = (aac_codec_t *)ifptr;
+ aac->m_buffer_on += bytes;
+ if (aac->m_buffer_on > aac->m_buffer_size) aac->m_buffer_on = aac->m_buffer_size;
+}
+
+int aac_file_eof (codec_data_t *ifptr)
+{
+ aac_codec_t *aac = (aac_codec_t *)ifptr;
+ return aac->m_buffer_on == aac->m_buffer_size && feof(aac->m_ifile);
+}
+
+int aac_raw_file_seek_to (codec_data_t *ifptr, uint64_t ts)
+{
+ if (ts != 0) return -1;
+
+ aac_codec_t *aac = (aac_codec_t *)ifptr;
+ rewind(aac->m_ifile);
+ aac->m_buffer_size = aac->m_buffer_on = 0;
+ aac->m_framecount = 0;
+ return 0;
+}
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