diff options
Diffstat (limited to 'ffmpeg1/libavcodec/adx_parser.c')
| -rw-r--r-- | ffmpeg1/libavcodec/adx_parser.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/ffmpeg1/libavcodec/adx_parser.c b/ffmpeg1/libavcodec/adx_parser.c deleted file mode 100644 index 706e242..0000000 --- a/ffmpeg1/libavcodec/adx_parser.c +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright (c) 2011 Justin Ruggles - * - * This file is part of Libav. - * - * Libav 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. - * - * Libav 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 Libav; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * ADX audio parser - * - * Splits packets into individual blocks. - */ - -#include "libavutil/intreadwrite.h" -#include "parser.h" -#include "adx.h" - -typedef struct ADXParseContext { - ParseContext pc; - int header_size; - int block_size; - int remaining; -} ADXParseContext; - -static int adx_parse(AVCodecParserContext *s1, - AVCodecContext *avctx, - const uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size) -{ - ADXParseContext *s = s1->priv_data; - ParseContext *pc = &s->pc; - int next = END_NOT_FOUND; - int i; - uint64_t state = pc->state64; - - if (!s->header_size) { - for (i = 0; i < buf_size; i++) { - state = (state << 8) | buf[i]; - /* check for fixed fields in ADX header for possible match */ - if ((state & 0xFFFF0000FFFFFF00) == 0x8000000003120400ULL) { - int channels = state & 0xFF; - int header_size = ((state >> 32) & 0xFFFF) + 4; - if (channels > 0 && header_size >= 8) { - s->header_size = header_size; - s->block_size = BLOCK_SIZE * channels; - s->remaining = i - 7 + s->header_size + s->block_size; - break; - } - } - } - pc->state64 = state; - } - - if (s->header_size) { - if (!s->remaining) - s->remaining = s->block_size; - if (s->remaining <= buf_size) { - next = s->remaining; - s->remaining = 0; - } else - s->remaining -= buf_size; - } - - if (ff_combine_frame(pc, next, &buf, &buf_size) < 0 || !buf_size) { - *poutbuf = NULL; - *poutbuf_size = 0; - return buf_size; - } - - s1->duration = BLOCK_SAMPLES; - - *poutbuf = buf; - *poutbuf_size = buf_size; - return next; -} - -AVCodecParser ff_adx_parser = { - .codec_ids = { AV_CODEC_ID_ADPCM_ADX }, - .priv_data_size = sizeof(ADXParseContext), - .parser_parse = adx_parse, - .parser_close = ff_parse_close, -}; |
