2 * Copyright (c) 2012 Justin Ruggles
4 * This file is part of Libav.
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 * Splits packets into individual blocks.
31 typedef struct GSMParseContext {
37 static int gsm_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
38 const uint8_t **poutbuf, int *poutbuf_size,
39 const uint8_t *buf, int buf_size)
41 GSMParseContext *s = s1->priv_data;
42 ParseContext *pc = &s->pc;
46 switch (avctx->codec_id) {
47 case CODEC_ID_GSM: s->block_size = GSM_BLOCK_SIZE; break;
48 case CODEC_ID_GSM_MS: s->block_size = GSM_MS_BLOCK_SIZE; break;
50 return AVERROR(EINVAL);
55 s->remaining = s->block_size;
56 if (s->remaining <= buf_size) {
61 s->remaining -= buf_size;
64 if (ff_combine_frame(pc, next, &buf, &buf_size) < 0 || !buf_size) {
70 *poutbuf_size = buf_size;
74 AVCodecParser ff_gsm_parser = {
75 .codec_ids = { CODEC_ID_GSM, CODEC_ID_GSM_MS },
76 .priv_data_size = sizeof(GSMParseContext),
77 .parser_parse = gsm_parse,
78 .parser_close = ff_parse_close,