static int output_configure(AACContext *ac,
enum ChannelPosition che_pos[4][MAX_ELEM_ID],
enum ChannelPosition new_che_pos[4][MAX_ELEM_ID],
- int channel_config)
+ int channel_config, enum OCStatus oc_type)
{
AVCodecContext *avctx = ac->avccontext;
int i, type, channels = 0, ret;
avctx->channels = channels;
- ac->output_configured = 1;
+ ac->output_configured = oc_type;
return 0;
}
if ((ret = set_default_channel_config(ac, new_che_pos, channel_config)))
return ret;
}
- if ((ret = output_configure(ac, ac->che_pos, new_che_pos, channel_config)))
+ if ((ret = output_configure(ac, ac->che_pos, new_che_pos, channel_config, OC_LOCKED)))
return ret;
if (extension_flag) {
size = ff_aac_parse_header(gb, &hdr_info);
if (size > 0) {
- if (!ac->output_configured && hdr_info.chan_config) {
+ if (ac->output_configured != OC_LOCKED && hdr_info.chan_config) {
enum ChannelPosition new_che_pos[4][MAX_ELEM_ID];
memset(new_che_pos, 0, 4 * MAX_ELEM_ID * sizeof(new_che_pos[0][0]));
ac->m4ac.chan_config = hdr_info.chan_config;
if (set_default_channel_config(ac, new_che_pos, hdr_info.chan_config))
return -7;
- if (output_configure(ac, ac->che_pos, new_che_pos, hdr_info.chan_config))
+ if (output_configure(ac, ac->che_pos, new_che_pos, hdr_info.chan_config, OC_TRIAL_FRAME))
return -7;
+ } else if (ac->output_configured != OC_LOCKED) {
+ ac->output_configured = OC_NONE;
}
ac->m4ac.sample_rate = hdr_info.sample_rate;
ac->m4ac.sampling_index = hdr_info.sampling_index;
memset(new_che_pos, 0, 4 * MAX_ELEM_ID * sizeof(new_che_pos[0][0]));
if ((err = decode_pce(ac, new_che_pos, &gb)))
break;
- if (ac->output_configured)
+ if (ac->output_configured <= OC_TRIAL_PCE)
av_log(avccontext, AV_LOG_ERROR,
"Not evaluating a further program_config_element as this construct is dubious at best.\n");
else
- err = output_configure(ac, ac->che_pos, new_che_pos, 0);
+ err = output_configure(ac, ac->che_pos, new_che_pos, 0, OC_TRIAL_PCE);
break;
}
ac->dsp.float_to_int16_interleave(data, (const float **)ac->output_data, 1024, avccontext->channels);
+ if (ac->output_configured)
+ ac->output_configured = OC_LOCKED;
+
return buf_size;
}
};
/**
+ * Output configuration status
+ */
+enum OCStatus {
+ OC_NONE, //< Output unconfigured
+ OC_TRIAL_PCE, //< Output configuration under trial specified by an inband PCE
+ OC_TRIAL_FRAME, //< Output configuration under trial specified by a frame header
+ OC_LOCKED, //< Output configuration locked in place
+};
+
+/**
* Predictor State
*/
typedef struct {
DECLARE_ALIGNED(16, float, temp[128]);
- int output_configured;
+ enum OCStatus output_configured;
} AACContext;
#endif /* AVCODEC_AAC_H */