#include "libavutil/avutil.h"
#include "bitstream.h"
+#include "g729.h"
+#include "lsp.h"
+#include "acelp_math.h"
+#include "acelp_filters.h"
+#include "acelp_pitch_delay.h"
+#include "acelp_vectors.h"
+#include "g729data.h"
+
/**
* minimum quantized LSF value (3.2.4)
* 0.005 in Q13
*/
#define SHARP_MAX 13017
+typedef struct
+{
+ int sample_rate;
+ uint8_t packed_frame_size; ///< input frame size(in bytes)
+ uint8_t unpacked_frame_size;///< output frame size (in bytes)
+ uint8_t fc_indexes_bits; ///< size (in bits) of fixed-codebook index entry
+
+ /// mr_energy = mean_energy + 10 * log10(2^26 * subframe_size) in (7.13)
+ int mr_energy;
+} G729_format_description;
+
/**
* \brief pseudo random number generator
*/
return (0x6996966996696996ULL >> (value >> 2)) & 1;
}
+ if(avctx->channels != 1)
+ {
+ av_log(avctx, AV_LOG_ERROR, "Only mono sound is supported (requested channels: %d).\n", avctx->channels);
+ return AVERROR_NOFMT;
+ }
+
ff_acelp_weighted_vector_sum(
fc + pitch_delay_int[i],
fc + pitch_delay_int[i],
14,
ctx->subframe_size - pitch_delay_int[i]);
+ if(ctx->frame_erasure)
+ {
+ ctx->gain_pitch = (29491 * ctx->gain_pitch) >> 15; // 0.9 (0.15)
+ ctx->gain_code = (2007 * ctx->gain_code) >> 11; // 0.98 in (0.11)
+
+ gain_corr_factor = 0;
+ }
+ else
+ {
ctx->gain_pitch = cb_gain_1st_8k[parm->gc_1st_index[i]][0] +
cb_gain_2nd_8k[parm->gc_2nd_index[i]][0];
gain_corr_factor = cb_gain_1st_8k[parm->gc_1st_index[i]][1] +
14,
ctx->subframe_size);
+ if (buf_size<packed_frame_size)
+ {
+ av_log(avctx, AV_LOG_ERROR, "Error processing packet: packet size too small\n");
+ return AVERROR(EIO);
+ }
+ if (*data_size<unpacked_frame_size)
+ {
+ av_log(avctx, AV_LOG_ERROR, "Error processing packet: output buffer too small\n");
+ return AVERROR(EIO);
+ }
+
AVCodec g729_decoder =
{
"g729",