This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "AMR-WB decoder". The branch, master has been updated via 5116d7f3e4f7d3dfb7436506d9d9771e3c0cf2a4 (commit) from 9af5752cd7ed98e7bfbc0f6bd2d17b345f22278a (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 5116d7f3e4f7d3dfb7436506d9d9771e3c0cf2a4 Author: Marcelo Povoa <marspeoplester@gmail.com> Date: Wed Jul 28 00:34:59 2010 -0300 Fix LP coefficients offset and upscale output, bringing the decoder output audio to a recognizable level for some bitrates (contains only the lower frequency band yet) diff --git a/libavcodec/amrwbdec.c b/libavcodec/amrwbdec.c index 3f3faf4..35f74af 100644 --- a/libavcodec/amrwbdec.c +++ b/libavcodec/amrwbdec.c @@ -51,7 +51,7 @@ typedef struct { double isp[4][LP_ORDER]; ///< ISP vectors from current frame double isp_sub4_past[LP_ORDER]; ///< ISP vector for the 4th subframe of the previous frame - float lp_coef[4][LP_ORDER]; ///< Linear Prediction Coefficients from ISP vector + float lp_coef[4][LP_ORDER + 1]; ///< Linear Prediction Coefficients from ISP vector uint8_t base_pitch_lag; ///< integer part of pitch lag for next relative subframe uint8_t pitch_lag_int; ///< integer part of pitch lag of the previous subframe @@ -905,7 +905,7 @@ static void synthesis(AMRWBContext *ctx, float *lpc, float *excitation, energy, AMRWB_SUBFRAME_SIZE); } - ff_celp_lp_synthesis_filterf(samples, lpc, excitation, + ff_celp_lp_synthesis_filterf(samples, lpc + 1, excitation, AMRWB_SUBFRAME_SIZE, LP_ORDER); } @@ -985,7 +985,7 @@ static void upsample_5_4(float *out, const float *in, int o_size) out[i] = ff_dot_productf(in0 + int_part, upsample_fir[4 - frac_part], UPS_MEM_SIZE); - out[i] *= 2.0; // upscale output + out[i] *= 2.0 / 32768.0; // upscale output } } ----------------------------------------------------------------------- Summary of changes: libavcodec/amrwbdec.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) hooks/post-receive -- AMR-WB decoder