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libgsm: split init and close fuctions for encoder and decoder.

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The decoder shouldn't be allocating coded_frame. It's also cleaner to split
them than to check avctx->codec->encode and avctx->codec->decode.
This commit is contained in:
Justin Ruggles 2011-09-12 12:13:05 -04:00
parent d853e571ad
commit 8febd6afbc
1 changed files with 49 additions and 20 deletions
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69
libavcodec/libgsm.c
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@ -35,22 +35,13 @@
#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);
@ -65,7 +56,6 @@ static av_cold int libgsm_init(AVCodecContext *avctx) {
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;
@ -116,9 +106,9 @@ AVCodec ff_libgsm_encoder = {
.name = "libgsm",
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_GSM,
.init = libgsm_init,
.init = libgsm_encode_init,
.encode = libgsm_encode_frame,
.close = libgsm_close,
.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"),
};
@ -127,13 +117,52 @@ AVCodec ff_libgsm_ms_encoder = {
.name = "libgsm_ms",
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_GSM_MS,
.init = libgsm_init,
.init = libgsm_encode_init,
.encode = libgsm_encode_frame,
.close = libgsm_close,
.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) {
@ -158,8 +187,8 @@ AVCodec ff_libgsm_decoder = {
.name = "libgsm",
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_GSM,
.init = libgsm_init,
.close = libgsm_close,
.init = libgsm_decode_init,
.close = libgsm_decode_close,
.decode = libgsm_decode_frame,
.long_name = NULL_IF_CONFIG_SMALL("libgsm GSM"),
};
@ -168,8 +197,8 @@ AVCodec ff_libgsm_ms_decoder = {
.name = "libgsm_ms",
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_GSM_MS,
.init = libgsm_init,
.close = libgsm_close,
.init = libgsm_decode_init,
.close = libgsm_decode_close,
.decode = libgsm_decode_frame,
.long_name = NULL_IF_CONFIG_SMALL("libgsm GSM Microsoft variant"),
};