Make the targa encoder return sane error values rather than -1.
[ffmpeg.git] / libavcodec / aac_parser.c
index 7e6678d..3ad4610 100644 (file)
@@ -1,7 +1,7 @@
 /*
  * Audio and Video frame extraction
- * Copyright (c) 2003 Fabrice Bellard.
- * Copyright (c) 2003 Michael Niedermayer.
+ * Copyright (c) 2003 Fabrice Bellard
+ * Copyright (c) 2003 Michael Niedermayer
  *
  * This file is part of FFmpeg.
  *
 
 #include "parser.h"
 #include "aac_ac3_parser.h"
-#include "bitstream.h"
+#include "aacadtsdec.h"
+#include "get_bits.h"
+#include "mpeg4audio.h"
 
-
-#define AAC_HEADER_SIZE 7
-
-
-static const int aac_sample_rates[16] = {
-    96000, 88200, 64000, 48000, 44100, 32000,
-    24000, 22050, 16000, 12000, 11025, 8000, 7350
-};
-
-static const int aac_channels[8] = {
-    0, 1, 2, 3, 4, 5, 6, 8
-};
-
-
-static int aac_sync(AACAC3ParseContext *hdr_info)
+static int aac_sync(uint64_t state, AACAC3ParseContext *hdr_info,
+        int *need_next_header, int *new_frame_start)
 {
     GetBitContext bits;
-    int size, rdb, ch, sr;
+    AACADTSHeaderInfo hdr;
+    int size;
+    union {
+        uint64_t u64;
+        uint8_t  u8[8];
+    } tmp;
 
-    init_get_bits(&bits, hdr_info->inbuf, AAC_HEADER_SIZE * 8);
+    tmp.u64 = av_be2ne64(state);
+    init_get_bits(&bits, tmp.u8+8-AAC_ADTS_HEADER_SIZE, AAC_ADTS_HEADER_SIZE * 8);
 
-    if(get_bits(&bits, 12) != 0xfff)
+    if ((size = ff_aac_parse_header(&bits, &hdr)) < 0)
         return 0;
-
-    skip_bits1(&bits);          /* id */
-    skip_bits(&bits, 2);        /* layer */
-    skip_bits1(&bits);          /* protection_absent */
-    skip_bits(&bits, 2);        /* profile_objecttype */
-    sr = get_bits(&bits, 4);    /* sample_frequency_index */
-    if(!aac_sample_rates[sr])
-        return 0;
-    skip_bits1(&bits);          /* private_bit */
-    ch = get_bits(&bits, 3);    /* channel_configuration */
-    if(!aac_channels[ch])
-        return 0;
-    skip_bits1(&bits);          /* original/copy */
-    skip_bits1(&bits);          /* home */
-
-    /* adts_variable_header */
-    skip_bits1(&bits);          /* copyright_identification_bit */
-    skip_bits1(&bits);          /* copyright_identification_start */
-    size = get_bits(&bits, 13); /* aac_frame_length */
-    if(size < AAC_HEADER_SIZE)
-        return 0;
-
-    skip_bits(&bits, 11);       /* adts_buffer_fullness */
-    rdb = get_bits(&bits, 2);   /* number_of_raw_data_blocks_in_frame */
-
-    hdr_info->channels = aac_channels[ch];
-    hdr_info->sample_rate = aac_sample_rates[sr];
-    hdr_info->samples = (rdb + 1) * 1024;
-    hdr_info->bit_rate = size * 8 * hdr_info->sample_rate / hdr_info->samples;
-
+    *need_next_header = 0;
+    *new_frame_start  = 1;
+    hdr_info->sample_rate = hdr.sample_rate;
+    hdr_info->channels    = ff_mpeg4audio_channels[hdr.chan_config];
+    hdr_info->samples     = hdr.samples;
+    hdr_info->bit_rate    = hdr.bit_rate;
     return size;
 }
 
 static av_cold int aac_parse_init(AVCodecParserContext *s1)
 {
     AACAC3ParseContext *s = s1->priv_data;
-    s->stream_type = EAC3_STREAM_TYPE_INDEPENDENT;
-    s->inbuf_ptr = s->inbuf;
-    s->header_size = AAC_HEADER_SIZE;
+    s->header_size = AAC_ADTS_HEADER_SIZE;
     s->sync = aac_sync;
     return 0;
 }
@@ -96,5 +65,5 @@ AVCodecParser aac_parser = {
     sizeof(AACAC3ParseContext),
     aac_parse_init,
     ff_aac_ac3_parse,
-    NULL,
+    ff_parse_close,
 };