From f40bfc9267b13b54e6379dfe7539447662879d24 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Sat, 25 Jun 2011 21:32:25 -0400 Subject: Add codecs to librbcodec. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius Tested-by: Nils Wallménius --- apps/codecs/lib/ffmpeg_put_bits.h | 323 -------------------------------------- 1 file changed, 323 deletions(-) delete mode 100644 apps/codecs/lib/ffmpeg_put_bits.h (limited to 'apps/codecs/lib/ffmpeg_put_bits.h') diff --git a/apps/codecs/lib/ffmpeg_put_bits.h b/apps/codecs/lib/ffmpeg_put_bits.h deleted file mode 100644 index 38db55fe18..0000000000 --- a/apps/codecs/lib/ffmpeg_put_bits.h +++ /dev/null @@ -1,323 +0,0 @@ -/* - * copyright (c) 2004 Michael Niedermayer - * - * 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 - */ - -/** - * @file libavcodec/put_bits.h - * bitstream writer API - */ - -#ifndef AVCODEC_PUT_BITS_H -#define AVCODEC_PUT_BITS_H - -#include -#include -#include "ffmpeg_bswap.h" -#include "ffmpeg_intreadwrite.h" - -#define av_log(...) -#define HAVE_FAST_UNALIGNED 0 - -/* buf and buf_end must be present and used by every alternative writer. */ -typedef struct PutBitContext { -#ifdef ALT_BITSTREAM_WRITER - uint8_t *buf, *buf_end; - int index; -#else - uint32_t bit_buf; - int bit_left; - uint8_t *buf, *buf_ptr, *buf_end; -#endif - int size_in_bits; -} PutBitContext; - -/** - * Initializes the PutBitContext s. - * - * @param buffer the buffer where to put bits - * @param buffer_size the size in bytes of buffer - */ -static inline void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size) -{ - if(buffer_size < 0) { - buffer_size = 0; - buffer = NULL; - } - - s->size_in_bits= 8*buffer_size; - s->buf = buffer; - s->buf_end = s->buf + buffer_size; -#ifdef ALT_BITSTREAM_WRITER - s->index=0; - ((uint32_t*)(s->buf))[0]=0; -// memset(buffer, 0, buffer_size); -#else - s->buf_ptr = s->buf; - s->bit_left=32; - s->bit_buf=0; -#endif -} - -/** - * Returns the total number of bits written to the bitstream. - */ -static inline int put_bits_count(PutBitContext *s) -{ -#ifdef ALT_BITSTREAM_WRITER - return s->index; -#else - return (s->buf_ptr - s->buf) * 8 + 32 - s->bit_left; -#endif -} - -/** - * Pads the end of the output stream with zeros. - */ -static inline void flush_put_bits(PutBitContext *s) -{ -#ifdef ALT_BITSTREAM_WRITER - align_put_bits(s); -#else -#ifndef BITSTREAM_WRITER_LE - s->bit_buf<<= s->bit_left; -#endif - while (s->bit_left < 32) { - /* XXX: should test end of buffer */ -#ifdef BITSTREAM_WRITER_LE - *s->buf_ptr++=s->bit_buf; - s->bit_buf>>=8; -#else - *s->buf_ptr++=s->bit_buf >> 24; - s->bit_buf<<=8; -#endif - s->bit_left+=8; - } - s->bit_left=32; - s->bit_buf=0; -#endif -} - -#if defined(ALT_BITSTREAM_WRITER) || defined(BITSTREAM_WRITER_LE) -#define align_put_bits align_put_bits_unsupported_here -#define ff_put_string ff_put_string_unsupported_here -#define ff_copy_bits ff_copy_bits_unsupported_here -#else -/** - * Pads the bitstream with zeros up to the next byte boundary. - */ -void align_put_bits(PutBitContext *s); - -/** - * Puts the string string in the bitstream. - * - * @param terminate_string 0-terminates the written string if value is 1 - */ -void ff_put_string(PutBitContext *pb, const char *string, int terminate_string); - -/** - * Copies the content of src to the bitstream. - * - * @param length the number of bits of src to copy - */ -void ff_copy_bits(PutBitContext *pb, const uint8_t *src, int length); -#endif - -/** - * Writes up to 31 bits into a bitstream. - * Use put_bits32 to write 32 bits. - */ -static inline void put_bits(PutBitContext *s, int n, unsigned int value) -#ifndef ALT_BITSTREAM_WRITER -{ - unsigned int bit_buf; - int bit_left; - - // printf("put_bits=%d %x\n", n, value); - //assert(n <= 31 && value < (1U << n)); - - bit_buf = s->bit_buf; - bit_left = s->bit_left; - - // printf("n=%d value=%x cnt=%d buf=%x\n", n, value, bit_cnt, bit_buf); - /* XXX: optimize */ -#ifdef BITSTREAM_WRITER_LE - bit_buf |= value << (32 - bit_left); - if (n >= bit_left) { -#if !HAVE_FAST_UNALIGNED - if (3 & (intptr_t) s->buf_ptr) { - AV_WL32(s->buf_ptr, bit_buf); - } else -#endif - *(uint32_t *)s->buf_ptr = le2me_32(bit_buf); - s->buf_ptr+=4; - bit_buf = (bit_left==32)?0:value >> bit_left; - bit_left+=32; - } - bit_left-=n; -#else - if (n < bit_left) { - bit_buf = (bit_buf<> (n - bit_left); -#if !HAVE_FAST_UNALIGNED - if (3 & (intptr_t) s->buf_ptr) { - AV_WB32(s->buf_ptr, bit_buf); - } else -#endif - *(uint32_t *)s->buf_ptr = be2me_32(bit_buf); - //printf("bitbuf = %08x\n", bit_buf); - s->buf_ptr+=4; - bit_left+=32 - n; - bit_buf = value; - } -#endif - - s->bit_buf = bit_buf; - s->bit_left = bit_left; -} -#else /* ALT_BITSTREAM_WRITER defined */ -{ -# ifdef ALIGNED_BITSTREAM_WRITER -# if ARCH_X86 - __asm__ volatile( - "movl %0, %%ecx \n\t" - "xorl %%eax, %%eax \n\t" - "shrdl %%cl, %1, %%eax \n\t" - "shrl %%cl, %1 \n\t" - "movl %0, %%ecx \n\t" - "shrl $3, %%ecx \n\t" - "andl $0xFFFFFFFC, %%ecx \n\t" - "bswapl %1 \n\t" - "orl %1, (%2, %%ecx) \n\t" - "bswapl %%eax \n\t" - "addl %3, %0 \n\t" - "movl %%eax, 4(%2, %%ecx) \n\t" - : "=&r" (s->index), "=&r" (value) - : "r" (s->buf), "r" (n), "0" (s->index), "1" (value<<(-n)) - : "%eax", "%ecx" - ); -# else - int index= s->index; - uint32_t *ptr= ((uint32_t *)s->buf)+(index>>5); - - value<<= 32-n; - - ptr[0] |= be2me_32(value>>(index&31)); - ptr[1] = be2me_32(value<<(32-(index&31))); -//if(n>24) printf("%d %d\n", n, value); - index+= n; - s->index= index; -# endif -# else //ALIGNED_BITSTREAM_WRITER -# if ARCH_X86 - __asm__ volatile( - "movl $7, %%ecx \n\t" - "andl %0, %%ecx \n\t" - "addl %3, %%ecx \n\t" - "negl %%ecx \n\t" - "shll %%cl, %1 \n\t" - "bswapl %1 \n\t" - "movl %0, %%ecx \n\t" - "shrl $3, %%ecx \n\t" - "orl %1, (%%ecx, %2) \n\t" - "addl %3, %0 \n\t" - "movl $0, 4(%%ecx, %2) \n\t" - : "=&r" (s->index), "=&r" (value) - : "r" (s->buf), "r" (n), "0" (s->index), "1" (value) - : "%ecx" - ); -# else - int index= s->index; - uint32_t *ptr= (uint32_t*)(((uint8_t *)s->buf)+(index>>3)); - - ptr[0] |= be2me_32(value<<(32-n-(index&7) )); - ptr[1] = 0; -//if(n>24) printf("%d %d\n", n, value); - index+= n; - s->index= index; -# endif -# endif //!ALIGNED_BITSTREAM_WRITER -} -#endif - -static inline void put_sbits(PutBitContext *pb, int n, int32_t value) -{ - //assert(n >= 0 && n <= 31); - - put_bits(pb, n, value & ((1<buf + (s->index>>3); -#else - return s->buf_ptr; -#endif -} - -/** - * Skips the given number of bytes. - * PutBitContext must be flushed & aligned to a byte boundary before calling this. - */ -static inline void skip_put_bytes(PutBitContext *s, int n) -{ - //assert((put_bits_count(s)&7)==0); -#ifdef ALT_BITSTREAM_WRITER - FIXME may need some cleaning of the buffer - s->index += n<<3; -#else - //assert(s->bit_left==32); - s->buf_ptr += n; -#endif -} - -/** - * Skips the given number of bits. - * Must only be used if the actual values in the bitstream do not matter. - * If n is 0 the behavior is undefined. - */ -static inline void skip_put_bits(PutBitContext *s, int n) -{ -#ifdef ALT_BITSTREAM_WRITER - s->index += n; -#else - s->bit_left -= n; - s->buf_ptr-= 4*(s->bit_left>>5); - s->bit_left &= 31; -#endif -} - -/** - * Changes the end of the buffer. - * - * @param size the new size in bytes of the buffer where to put bits - */ -static inline void set_put_bits_buffer_size(PutBitContext *s, int size) -{ - s->buf_end= s->buf + size; -} - -#endif /* AVCODEC_PUT_BITS_H */ -- cgit v1.2.3