* Copyright (c) 2005 Alban Bedel <albeu@free.fr>
* Copyright (c) 2006, 2007 Michel Bardiaux <mbardiaux@mediaxim.be>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define GSM_MS_BLOCK_SIZE 65
#define GSM_FRAME_SIZE 160
-static av_cold int libgsm_init(AVCodecContext *avctx) {
+static av_cold int libgsm_encode_init(AVCodecContext *avctx) {
if (avctx->channels > 1) {
av_log(avctx, AV_LOG_ERROR, "Mono required for GSM, got %d channels\n",
avctx->channels);
return -1;
}
- if(avctx->codec->decode){
- if(!avctx->channels)
- avctx->channels= 1;
-
- if(!avctx->sample_rate)
- avctx->sample_rate= 8000;
-
- avctx->sample_fmt = AV_SAMPLE_FMT_S16;
- }else{
- if (avctx->sample_rate != 8000) {
- av_log(avctx, AV_LOG_ERROR, "Sample rate 8000Hz required for GSM, got %dHz\n",
- avctx->sample_rate);
- if(avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)
- return -1;
- }
- if (avctx->bit_rate != 13000 /* Official */ &&
- avctx->bit_rate != 13200 /* Very common */ &&
- avctx->bit_rate != 0 /* Unknown; a.o. mov does not set bitrate when decoding */ ) {
- av_log(avctx, AV_LOG_ERROR, "Bitrate 13000bps required for GSM, got %dbps\n",
- avctx->bit_rate);
- if(avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)
- return -1;
- }
+ if (avctx->sample_rate != 8000) {
+ av_log(avctx, AV_LOG_ERROR, "Sample rate 8000Hz required for GSM, got %dHz\n",
+ avctx->sample_rate);
+ if (avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)
+ return -1;
+ }
+ if (avctx->bit_rate != 13000 /* Official */ &&
+ avctx->bit_rate != 13200 /* Very common */ &&
+ avctx->bit_rate != 0 /* Unknown; a.o. mov does not set bitrate when decoding */ ) {
+ av_log(avctx, AV_LOG_ERROR, "Bitrate 13000bps required for GSM, got %dbps\n",
+ avctx->bit_rate);
+ if (avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)
+ return -1;
}
avctx->priv_data = gsm_create();
return 0;
}
-static av_cold int libgsm_close(AVCodecContext *avctx) {
+static av_cold int libgsm_encode_close(AVCodecContext *avctx) {
av_freep(&avctx->coded_frame);
gsm_destroy(avctx->priv_data);
avctx->priv_data = NULL;
AVCodec ff_libgsm_encoder = {
- "libgsm",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_GSM,
- 0,
- libgsm_init,
- libgsm_encode_frame,
- libgsm_close,
+ .name = "libgsm",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = CODEC_ID_GSM,
+ .init = libgsm_encode_init,
+ .encode = libgsm_encode_frame,
+ .close = libgsm_encode_close,
.sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_NONE},
.long_name = NULL_IF_CONFIG_SMALL("libgsm GSM"),
};
AVCodec ff_libgsm_ms_encoder = {
- "libgsm_ms",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_GSM_MS,
- 0,
- libgsm_init,
- libgsm_encode_frame,
- libgsm_close,
+ .name = "libgsm_ms",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = CODEC_ID_GSM_MS,
+ .init = libgsm_encode_init,
+ .encode = libgsm_encode_frame,
+ .close = libgsm_encode_close,
.sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_NONE},
.long_name = NULL_IF_CONFIG_SMALL("libgsm GSM Microsoft variant"),
};
+static av_cold int libgsm_decode_init(AVCodecContext *avctx) {
+ if (avctx->channels > 1) {
+ av_log(avctx, AV_LOG_ERROR, "Mono required for GSM, got %d channels\n",
+ avctx->channels);
+ return -1;
+ }
+
+ if (!avctx->channels)
+ avctx->channels = 1;
+
+ if (!avctx->sample_rate)
+ avctx->sample_rate = 8000;
+
+ avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+
+ avctx->priv_data = gsm_create();
+
+ switch(avctx->codec_id) {
+ case CODEC_ID_GSM:
+ avctx->frame_size = GSM_FRAME_SIZE;
+ avctx->block_align = GSM_BLOCK_SIZE;
+ break;
+ case CODEC_ID_GSM_MS: {
+ int one = 1;
+ gsm_option(avctx->priv_data, GSM_OPT_WAV49, &one);
+ avctx->frame_size = 2 * GSM_FRAME_SIZE;
+ avctx->block_align = GSM_MS_BLOCK_SIZE;
+ }
+ }
+
+ return 0;
+}
+
+static av_cold int libgsm_decode_close(AVCodecContext *avctx) {
+ gsm_destroy(avctx->priv_data);
+ avctx->priv_data = NULL;
+ return 0;
+}
+
static int libgsm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt) {
- const uint8_t *buf = avpkt->data;
+ uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
*data_size = 0; /* In case of error */
if(buf_size < avctx->block_align) return -1;
}
AVCodec ff_libgsm_decoder = {
- "libgsm",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_GSM,
- 0,
- libgsm_init,
- NULL,
- libgsm_close,
- libgsm_decode_frame,
+ .name = "libgsm",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = CODEC_ID_GSM,
+ .init = libgsm_decode_init,
+ .close = libgsm_decode_close,
+ .decode = libgsm_decode_frame,
.long_name = NULL_IF_CONFIG_SMALL("libgsm GSM"),
};
AVCodec ff_libgsm_ms_decoder = {
- "libgsm_ms",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_GSM_MS,
- 0,
- libgsm_init,
- NULL,
- libgsm_close,
- libgsm_decode_frame,
+ .name = "libgsm_ms",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = CODEC_ID_GSM_MS,
+ .init = libgsm_decode_init,
+ .close = libgsm_decode_close,
+ .decode = libgsm_decode_frame,
.long_name = NULL_IF_CONFIG_SMALL("libgsm GSM Microsoft variant"),
};
projects / ffmpeg / blobdiff