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* qatar/master: (27 commits) ac3enc: fix LOCAL_ALIGNED usage in count_mantissa_bits() ac3dsp: do not use the ff_* prefix when referencing ff_ac3_bap_bits. ac3dsp: fix loop condition in ac3_update_bap_counts_c() ARM: unbreak build ac3enc: modify mantissa bit counting to keep bap counts for all values of bap instead of just 0 to 4. ac3enc: split mantissa bit counting into a separate function. ac3enc: store per-block/channel bap pointers by reference block in a 2D array rather than in the AC3Block struct. get_bits: add av_unused tag to cache variable sws: replace all long with int. ARM: aacdec: fix constraints on inline asm ARM: remove unnecessary volatile from inline asm ARM: add "cc" clobbers to inline asm where needed ARM: improve FASTDIV asm ac3enc: use LOCAL_ALIGNED macro APIchanges: fill in git hash for av_get_pix_fmt_name (0420bd7). lavu: add av_get_pix_fmt_name() convenience function cmdutils: remove OPT_FUNC2 swscale: fix crash in bilinear scaling. vpxenc: add VP8E_SET_STATIC_THRESHOLD mapping webm: support stereo videos in matroska/webm muxer ... Conflicts: Changelog cmdutils.c cmdutils.h doc/APIchanges doc/muxers.texi ffmpeg.c ffplay.c libavcodec/ac3enc.c libavcodec/ac3enc_float.c libavcodec/avcodec.h libavcodec/get_bits.h libavcodec/libvpxenc.c libavcodec/version.h libavdevice/libdc1394.c libavformat/matroskaenc.c libavutil/avutil.h libswscale/rgb2rgb.c libswscale/swscale.c libswscale/swscale_template.c libswscale/x86/swscale_template.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
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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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#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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