33 static int parse_config_ALS(GetBitContext *gb, MPEG4AudioConfig *c, void *logctx)  in parse_config_ALS()  argument
35     if (get_bits_left(gb) < 112)  in parse_config_ALS()
38     if (get_bits_long(gb, 32) != MKBETAG('A','L','S','\0'))  in parse_config_ALS()
43     c->sample_rate = get_bits_long(gb, 32);  in parse_config_ALS()
51     skip_bits_long(gb, 32);  in parse_config_ALS()
55     c->channels    = get_bits(gb, 16) + 1;  in parse_config_ALS()
84 static inline int get_object_type(GetBitContext *gb)  in get_object_type()  argument
86     int object_type = get_bits(gb, 5);  in get_object_type()
88         object_type = 32 + get_bits(gb, 6);  in get_object_type()
92 static inline int get_sample_rate(GetBitContext *gb, int *index)  in get_sample_rate()  argument
94     *index = get_bits(gb, 4);  in get_sample_rate()
95     return *index == 0x0f ? get_bits(gb, 24) :  in get_sample_rate()
99 int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, GetBitContext *gb,  in ff_mpeg4audio_get_config_gb()  argument
103     int start_bit_index = get_bits_count(gb);  in ff_mpeg4audio_get_config_gb()
104     c->object_type = get_object_type(gb);  in ff_mpeg4audio_get_config_gb()
105     c->sample_rate = get_sample_rate(gb, &c->sampling_index);  in ff_mpeg4audio_get_config_gb()
106     c->chan_config = get_bits(gb, 4);  in ff_mpeg4audio_get_config_gb()
117         !(show_bits(gb, 3) & 0x03 && !(show_bits(gb, 9) & 0x3F)))) {  in ff_mpeg4audio_get_config_gb()
122         c->ext_sample_rate = get_sample_rate(gb, &c->ext_sampling_index);  in ff_mpeg4audio_get_config_gb()
123         c->object_type = get_object_type(gb);  in ff_mpeg4audio_get_config_gb()
125             c->ext_chan_config = get_bits(gb, 4);  in ff_mpeg4audio_get_config_gb()
130     specific_config_bitindex = get_bits_count(gb);  in ff_mpeg4audio_get_config_gb()
133         skip_bits(gb, 5);  in ff_mpeg4audio_get_config_gb()
134         if (show_bits(gb, 24) != MKBETAG('\0','A','L','S'))  in ff_mpeg4audio_get_config_gb()
135             skip_bits(gb, 24);  in ff_mpeg4audio_get_config_gb()
137         specific_config_bitindex = get_bits_count(gb);  in ff_mpeg4audio_get_config_gb()
139         ret = parse_config_ALS(gb, c, logctx);  in ff_mpeg4audio_get_config_gb()
145         while (get_bits_left(gb) > 15) {  in ff_mpeg4audio_get_config_gb()
146             if (show_bits(gb, 11) == 0x2b7) { // sync extension  in ff_mpeg4audio_get_config_gb()
147                 get_bits(gb, 11);  in ff_mpeg4audio_get_config_gb()
148                 c->ext_object_type = get_object_type(gb);  in ff_mpeg4audio_get_config_gb()
149                 if (c->ext_object_type == AOT_SBR && (c->sbr = get_bits1(gb)) == 1) {  in ff_mpeg4audio_get_config_gb()
150                     c->ext_sample_rate = get_sample_rate(gb, &c->ext_sampling_index);  in ff_mpeg4audio_get_config_gb()
154                 if (get_bits_left(gb) > 11 && get_bits(gb, 11) == 0x548)  in ff_mpeg4audio_get_config_gb()
155                     c->ps = get_bits1(gb);  in ff_mpeg4audio_get_config_gb()
158                 get_bits1(gb); // skip 1 bit  in ff_mpeg4audio_get_config_gb()
176     GetBitContext gb;  in avpriv_mpeg4audio_get_config()  local
182     ret = init_get_bits(&gb, buf, bit_size);  in avpriv_mpeg4audio_get_config()
186     return ff_mpeg4audio_get_config_gb(c, &gb, sync_extension, NULL);  in avpriv_mpeg4audio_get_config()
193     GetBitContext gb;  in avpriv_mpeg4audio_get_config2()  local
199     ret = init_get_bits8(&gb, buf, size);  in avpriv_mpeg4audio_get_config2()
203     return ff_mpeg4audio_get_config_gb(c, &gb, sync_extension, logctx);  in avpriv_mpeg4audio_get_config2()