mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
c581cb4e4f
* qatar/master: Fix even more missing includes after the common.h removal build: Factor out rangecoder dependencies to CONFIG_RANGECODER build: Factor out error resilience dependencies to CONFIG_ERROR_RESILIENCE x86: avcodec: Consistently name all init files Add more missing includes after removing the implicit common.h Add some more missing includes after removing the implicit common.h Don't include common.h from avutil.h rtmp: Automatically compute the hash for SWFVerification Conflicts: configure doc/APIchanges doc/examples/decoding_encoding.c libavcodec/Makefile libavcodec/assdec.c libavcodec/audio_frame_queue.c libavcodec/avpacket.c libavcodec/dv_profile.c libavcodec/dwt.c libavcodec/libtheoraenc.c libavcodec/rawdec.c libavcodec/rv40dsp.c libavcodec/tiff.c libavcodec/tiffenc.c libavcodec/v210dec.h libavcodec/vc1dsp.c libavcodec/x86/Makefile libavfilter/asrc_anullsrc.c libavfilter/avfilter.c libavfilter/buffer.c libavfilter/formats.c libavfilter/vf_ass.c libavfilter/vf_drawtext.c libavfilter/vf_fade.c libavfilter/vf_select.c libavfilter/video.c libavfilter/vsrc_testsrc.c libavformat/version.h libavutil/audioconvert.c libavutil/error.h libavutil/version.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/*
|
|
* Shared functions between AMR codecs
|
|
*
|
|
* Copyright (c) 2010 Marcelo Galvao Povoa
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_AMR_H
|
|
#define AVCODEC_AMR_H
|
|
|
|
#include <string.h>
|
|
|
|
#include "avcodec.h"
|
|
|
|
#ifdef AMR_USE_16BIT_TABLES
|
|
#define R_TABLE_TYPE uint16_t
|
|
#else
|
|
#define R_TABLE_TYPE uint8_t
|
|
#endif
|
|
|
|
/**
|
|
* Fill the frame structure variables from bitstream by parsing the
|
|
* given reordering table that uses the following format:
|
|
*
|
|
* Each field (16 bits) in the AMR Frame is stored as:
|
|
* - one byte for the number of bits in the field
|
|
* - one byte for the field index
|
|
* - then, one byte for each bit of the field (from most-significant to least)
|
|
* of the position of that bit in the AMR frame.
|
|
*
|
|
* @param out pointer to the frame struct
|
|
* @param size the size in bytes of the frame struct
|
|
* @param data input bitstream after the frame header
|
|
* @param ord_table the reordering table as above
|
|
*/
|
|
static inline void ff_amr_bit_reorder(uint16_t *out, int size,
|
|
const uint8_t *data,
|
|
const R_TABLE_TYPE *ord_table)
|
|
{
|
|
int field_size;
|
|
|
|
memset(out, 0, size);
|
|
while ((field_size = *ord_table++)) {
|
|
int field = 0;
|
|
int field_offset = *ord_table++;
|
|
while (field_size--) {
|
|
int bit = *ord_table++;
|
|
field <<= 1;
|
|
field |= data[bit >> 3] >> (bit & 7) & 1;
|
|
}
|
|
out[field_offset >> 1] = field;
|
|
}
|
|
}
|
|
|
|
#endif /* AVCODEC_AMR_H */
|