mirror of https://github.com/FFmpeg/FFmpeg.git
User applications should by now be able to support float encoders. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>pull/2/head
Michael Niedermayer
14 years ago
parent
d912e449b6
commit
9f4d37f450
6 changed files with 9 additions and 168 deletions
@ -1,118 +0,0 @@ |
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#include "libavutil/opt.h" |
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#include "libavutil/samplefmt.h" |
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#include "avcodec.h" |
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#include "ac3.h" |
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typedef struct CombineContext{ |
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AVClass *av_class; ///< AVClass used for AVOption
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AC3EncOptions options; ///< encoding options
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void *ctx; |
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AVCodec *codec; |
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}CombineContext; |
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#define OFFSET(param) offsetof(CombineContext, options.param) |
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#define AC3ENC_PARAM (AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM) |
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#define AC3ENC_TYPE_AC3_FIXED 0 |
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#define AC3ENC_TYPE_AC3 1 |
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#define AC3ENC_TYPE_EAC3 2 |
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#define AC3ENC_TYPE 12354 |
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/* common option values */ |
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#define AC3ENC_OPT_NONE -1 |
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#define AC3ENC_OPT_AUTO -1 |
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#define AC3ENC_OPT_OFF 0 |
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#define AC3ENC_OPT_ON 1 |
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#define AC3ENC_OPT_NOT_INDICATED 0 |
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#define AC3ENC_OPT_MODE_ON 1 |
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#define AC3ENC_OPT_MODE_OFF 2 |
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/* specific option values */ |
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#define AC3ENC_OPT_LARGE_ROOM 1 |
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#define AC3ENC_OPT_SMALL_ROOM 2 |
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#define AC3ENC_OPT_DOWNMIX_LTRT 1 |
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#define AC3ENC_OPT_DOWNMIX_LORO 2 |
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#define AC3ENC_OPT_ADCONV_STANDARD 0 |
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#define AC3ENC_OPT_ADCONV_HDCD 1 |
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#include "ac3enc_opts_template.c" |
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static AVClass ac3enc_class = { "AC-3 Encoder", av_default_item_name, |
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eac3_options, LIBAVUTIL_VERSION_INT }; |
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static av_cold AVCodec *get_codec(enum AVSampleFormat s){ |
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#if CONFIG_AC3_FIXED_ENCODER |
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if(s==AV_SAMPLE_FMT_S16) return &ff_ac3_fixed_encoder; |
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#endif |
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#if CONFIG_AC3_FLOAT_ENCODER |
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if(s==AV_SAMPLE_FMT_FLT) return &ff_ac3_float_encoder; |
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#endif |
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return NULL; |
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} |
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static av_cold int encode_init(AVCodecContext *avctx) |
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{ |
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CombineContext *c= avctx->priv_data; |
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int ret; |
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int offset= (uint8_t*)&c->options - (uint8_t*)c; |
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c->codec= get_codec(avctx->sample_fmt); |
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if(!c->codec){ |
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av_log(avctx, AV_LOG_ERROR, "Unsupported sample format\n"); |
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return -1; |
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} |
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c->ctx= av_mallocz(c->codec->priv_data_size); |
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memcpy((uint8_t*)c->ctx + offset, &c->options, (uint8_t*)&c->ctx - (uint8_t*)&c->options); |
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FFSWAP(void *,avctx->priv_data, c->ctx); |
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ret= c->codec->init(avctx); |
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FFSWAP(void *,avctx->priv_data, c->ctx); |
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return ret; |
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} |
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static int encode_frame(AVCodecContext *avctx, unsigned char *frame, |
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int buf_size, void *data) |
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{ |
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CombineContext *c= avctx->priv_data; |
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int ret; |
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FFSWAP(void *,avctx->priv_data, c->ctx); |
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ret= c->codec->encode(avctx, frame, buf_size, data); |
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FFSWAP(void *,avctx->priv_data, c->ctx); |
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return ret; |
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} |
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static av_cold int encode_close(AVCodecContext *avctx) |
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{ |
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CombineContext *c= avctx->priv_data; |
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int ret; |
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FFSWAP(void *,avctx->priv_data, c->ctx); |
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ret= c->codec->close(avctx); |
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FFSWAP(void *,avctx->priv_data, c->ctx); |
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return ret; |
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} |
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AVCodec ff_ac3_encoder = { |
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"ac3", |
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AVMEDIA_TYPE_AUDIO, |
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CODEC_ID_AC3, |
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sizeof(CombineContext), |
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encode_init, |
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encode_frame, |
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encode_close, |
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NULL, |
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.sample_fmts = (const enum AVSampleFormat[]){ |
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#if CONFIG_AC3_FLOAT_ENCODER |
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AV_SAMPLE_FMT_FLT, |
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#endif |
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#if CONFIG_AC3_FIXED_ENCODER |
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AV_SAMPLE_FMT_S16, |
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#endif |
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AV_SAMPLE_FMT_NONE}, |
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.long_name = NULL_IF_CONFIG_SMALL("ATSC A/52A (AC-3)"), |
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.priv_class = &ac3enc_class, |
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.channel_layouts = ff_ac3_channel_layouts, |
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}; |
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