X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Flibgsm.c;h=951e736098ff5a539337ccfe9e919e5384f43fd5;hb=99975966c319f8995f20c8db56a5cf77cfeb69ee;hp=1f76f82d55a39fd74735f41a5d1b61bcae61cd94;hpb=d36beb3f6902b1217beda576aa18abf7eb72b03c;p=ffmpeg diff --git a/libavcodec/libgsm.c b/libavcodec/libgsm.c index 1f76f82d55a..951e736098f 100644 --- a/libavcodec/libgsm.c +++ b/libavcodec/libgsm.c @@ -3,20 +3,20 @@ * Copyright (c) 2005 Alban Bedel * Copyright (c) 2006, 2007 Michel Bardiaux * - * 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 */ @@ -35,36 +35,26 @@ #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(); @@ -88,7 +78,7 @@ static av_cold int libgsm_init(AVCodecContext *avctx) { 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; @@ -113,33 +103,70 @@ static int libgsm_encode_frame(AVCodecContext *avctx, 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; @@ -157,25 +184,21 @@ static int libgsm_decode_frame(AVCodecContext *avctx, } 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"), };