diff options
| author | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
| commit | 22e28216336da876e1fd17f380ce42eaf1446769 (patch) | |
| tree | 444dad3dc7e2656992d29f34f7bce31970c122a5 /ffmpeg/libavcodec/libspeexdec.c | |
| parent | ae5e8541f6e06e64c28719467cdf366ac57aff31 (diff) | |
chasing indexing error
Diffstat (limited to 'ffmpeg/libavcodec/libspeexdec.c')
| -rw-r--r-- | ffmpeg/libavcodec/libspeexdec.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/ffmpeg/libavcodec/libspeexdec.c b/ffmpeg/libavcodec/libspeexdec.c deleted file mode 100644 index afe1176..0000000 --- a/ffmpeg/libavcodec/libspeexdec.c +++ /dev/null @@ -1,192 +0,0 @@ -/* - * Copyright (C) 2008 David Conrad - * - * 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 - */ - -#include <speex/speex.h> -#include <speex/speex_header.h> -#include <speex/speex_stereo.h> -#include <speex/speex_callbacks.h> - -#include "libavutil/channel_layout.h" -#include "libavutil/common.h" -#include "avcodec.h" -#include "internal.h" - -typedef struct { - SpeexBits bits; - SpeexStereoState stereo; - void *dec_state; - int frame_size; -} LibSpeexContext; - - -static av_cold int libspeex_decode_init(AVCodecContext *avctx) -{ - LibSpeexContext *s = avctx->priv_data; - const SpeexMode *mode; - SpeexHeader *header = NULL; - int spx_mode; - - avctx->sample_fmt = AV_SAMPLE_FMT_S16; - if (avctx->extradata && avctx->extradata_size >= 80) { - header = speex_packet_to_header(avctx->extradata, - avctx->extradata_size); - if (!header) - av_log(avctx, AV_LOG_WARNING, "Invalid Speex header\n"); - } - if (avctx->codec_tag == MKTAG('S', 'P', 'X', 'N')) { - if (!avctx->extradata || avctx->extradata && avctx->extradata_size < 47) { - av_log(avctx, AV_LOG_ERROR, "Missing or invalid extradata.\n"); - return AVERROR_INVALIDDATA; - } - if (avctx->extradata[37] != 10) { - av_log(avctx, AV_LOG_ERROR, "Unsupported quality mode.\n"); - return AVERROR_PATCHWELCOME; - } - spx_mode = 0; - } else if (header) { - avctx->sample_rate = header->rate; - avctx->channels = header->nb_channels; - spx_mode = header->mode; - speex_header_free(header); - } else { - switch (avctx->sample_rate) { - case 8000: spx_mode = 0; break; - case 16000: spx_mode = 1; break; - case 32000: spx_mode = 2; break; - default: - /* libspeex can handle any mode if initialized as ultra-wideband */ - av_log(avctx, AV_LOG_WARNING, "Invalid sample rate: %d\n" - "Decoding as 32kHz ultra-wideband\n", - avctx->sample_rate); - spx_mode = 2; - } - } - - mode = speex_lib_get_mode(spx_mode); - if (!mode) { - av_log(avctx, AV_LOG_ERROR, "Unknown Speex mode %d", spx_mode); - return AVERROR_INVALIDDATA; - } - s->frame_size = 160 << spx_mode; - if (!avctx->sample_rate) - avctx->sample_rate = 8000 << spx_mode; - - if (avctx->channels < 1 || avctx->channels > 2) { - /* libspeex can handle mono or stereo if initialized as stereo */ - av_log(avctx, AV_LOG_ERROR, "Invalid channel count: %d.\n" - "Decoding as stereo.\n", avctx->channels); - avctx->channels = 2; - } - avctx->channel_layout = avctx->channels == 2 ? AV_CH_LAYOUT_STEREO : - AV_CH_LAYOUT_MONO; - - speex_bits_init(&s->bits); - s->dec_state = speex_decoder_init(mode); - if (!s->dec_state) { - av_log(avctx, AV_LOG_ERROR, "Error initializing libspeex decoder.\n"); - return -1; - } - - if (avctx->channels == 2) { - SpeexCallback callback; - callback.callback_id = SPEEX_INBAND_STEREO; - callback.func = speex_std_stereo_request_handler; - callback.data = &s->stereo; - s->stereo = (SpeexStereoState)SPEEX_STEREO_STATE_INIT; - speex_decoder_ctl(s->dec_state, SPEEX_SET_HANDLER, &callback); - } - - return 0; -} - -static int libspeex_decode_frame(AVCodecContext *avctx, void *data, - int *got_frame_ptr, AVPacket *avpkt) -{ - uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - LibSpeexContext *s = avctx->priv_data; - AVFrame *frame = data; - int16_t *output; - int ret, consumed = 0; - - /* get output buffer */ - frame->nb_samples = s->frame_size; - if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) - return ret; - output = (int16_t *)frame->data[0]; - - /* if there is not enough data left for the smallest possible frame or the - next 5 bits are a terminator code, reset the libspeex buffer using the - current packet, otherwise ignore the current packet and keep decoding - frames from the libspeex buffer. */ - if (speex_bits_remaining(&s->bits) < 5 || - speex_bits_peek_unsigned(&s->bits, 5) == 0xF) { - /* check for flush packet */ - if (!buf || !buf_size) { - *got_frame_ptr = 0; - return buf_size; - } - /* set new buffer */ - speex_bits_read_from(&s->bits, buf, buf_size); - consumed = buf_size; - } - - /* decode a single frame */ - ret = speex_decode_int(s->dec_state, &s->bits, output); - if (ret <= -2) { - av_log(avctx, AV_LOG_ERROR, "Error decoding Speex frame.\n"); - return AVERROR_INVALIDDATA; - } - if (avctx->channels == 2) - speex_decode_stereo_int(output, s->frame_size, &s->stereo); - - *got_frame_ptr = 1; - - return consumed; -} - -static av_cold int libspeex_decode_close(AVCodecContext *avctx) -{ - LibSpeexContext *s = avctx->priv_data; - - speex_bits_destroy(&s->bits); - speex_decoder_destroy(s->dec_state); - - return 0; -} - -static av_cold void libspeex_decode_flush(AVCodecContext *avctx) -{ - LibSpeexContext *s = avctx->priv_data; - speex_bits_reset(&s->bits); -} - -AVCodec ff_libspeex_decoder = { - .name = "libspeex", - .long_name = NULL_IF_CONFIG_SMALL("libspeex Speex"), - .type = AVMEDIA_TYPE_AUDIO, - .id = AV_CODEC_ID_SPEEX, - .priv_data_size = sizeof(LibSpeexContext), - .init = libspeex_decode_init, - .close = libspeex_decode_close, - .decode = libspeex_decode_frame, - .flush = libspeex_decode_flush, - .capabilities = CODEC_CAP_SUBFRAMES | CODEC_CAP_DELAY | CODEC_CAP_DR1, -}; |
