| /* |
| * AAC encoder wrapper |
| * Copyright (c) 2012 Martin Storsjo |
| * |
| * This file is part of FFmpeg. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <fdk-aac/aacenc_lib.h> |
| |
| #include "libavutil/channel_layout.h" |
| #include "libavutil/common.h" |
| #include "libavutil/opt.h" |
| #include "avcodec.h" |
| #include "audio_frame_queue.h" |
| #include "internal.h" |
| |
| typedef struct AACContext { |
| const AVClass *class; |
| HANDLE_AACENCODER handle; |
| int afterburner; |
| int eld_sbr; |
| int signaling; |
| int latm; |
| int header_period; |
| int vbr; |
| |
| AudioFrameQueue afq; |
| } AACContext; |
| |
| static const AVOption aac_enc_options[] = { |
| { "afterburner", "Afterburner (improved quality)", offsetof(AACContext, afterburner), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, |
| { "eld_sbr", "Enable SBR for ELD (for SBR in other configurations, use the -profile parameter)", offsetof(AACContext, eld_sbr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, |
| { "signaling", "SBR/PS signaling style", offsetof(AACContext, signaling), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 2, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, |
| { "default", "Choose signaling implicitly (explicit hierarchical by default, implicit if global header is disabled)", 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, |
| { "implicit", "Implicit backwards compatible signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, |
| { "explicit_sbr", "Explicit SBR, implicit PS signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, |
| { "explicit_hierarchical", "Explicit hierarchical signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, |
| { "latm", "Output LATM/LOAS encapsulated data", offsetof(AACContext, latm), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, |
| { "header_period", "StreamMuxConfig and PCE repetition period (in frames)", offsetof(AACContext, header_period), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 0xffff, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, |
| { "vbr", "VBR mode (1-5)", offsetof(AACContext, vbr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 5, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, |
| { NULL } |
| }; |
| |
| static const AVClass aac_enc_class = { |
| "libfdk_aac", av_default_item_name, aac_enc_options, LIBAVUTIL_VERSION_INT |
| }; |
| |
| static const char *aac_get_error(AACENC_ERROR err) |
| { |
| switch (err) { |
| case AACENC_OK: |
| return "No error"; |
| case AACENC_INVALID_HANDLE: |
| return "Invalid handle"; |
| case AACENC_MEMORY_ERROR: |
| return "Memory allocation error"; |
| case AACENC_UNSUPPORTED_PARAMETER: |
| return "Unsupported parameter"; |
| case AACENC_INVALID_CONFIG: |
| return "Invalid config"; |
| case AACENC_INIT_ERROR: |
| return "Initialization error"; |
| case AACENC_INIT_AAC_ERROR: |
| return "AAC library initialization error"; |
| case AACENC_INIT_SBR_ERROR: |
| return "SBR library initialization error"; |
| case AACENC_INIT_TP_ERROR: |
| return "Transport library initialization error"; |
| case AACENC_INIT_META_ERROR: |
| return "Metadata library initialization error"; |
| case AACENC_ENCODE_ERROR: |
| return "Encoding error"; |
| case AACENC_ENCODE_EOF: |
| return "End of file"; |
| default: |
| return "Unknown error"; |
| } |
| } |
| |
| static int aac_encode_close(AVCodecContext *avctx) |
| { |
| AACContext *s = avctx->priv_data; |
| |
| if (s->handle) |
| aacEncClose(&s->handle); |
| av_freep(&avctx->extradata); |
| ff_af_queue_close(&s->afq); |
| |
| return 0; |
| } |
| |
| static av_cold int aac_encode_init(AVCodecContext *avctx) |
| { |
| AACContext *s = avctx->priv_data; |
| int ret = AVERROR(EINVAL); |
| AACENC_InfoStruct info = { 0 }; |
| CHANNEL_MODE mode; |
| AACENC_ERROR err; |
| int aot = FF_PROFILE_AAC_LOW + 1; |
| int sce = 0, cpe = 0; |
| |
| if ((err = aacEncOpen(&s->handle, 0, avctx->channels)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to open the encoder: %s\n", |
| aac_get_error(err)); |
| goto error; |
| } |
| |
| if (avctx->profile != FF_PROFILE_UNKNOWN) |
| aot = avctx->profile + 1; |
| |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_AOT, aot)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to set the AOT %d: %s\n", |
| aot, aac_get_error(err)); |
| goto error; |
| } |
| |
| if (aot == FF_PROFILE_AAC_ELD + 1 && s->eld_sbr) { |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_SBR_MODE, |
| 1)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to enable SBR for ELD: %s\n", |
| aac_get_error(err)); |
| goto error; |
| } |
| } |
| |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_SAMPLERATE, |
| avctx->sample_rate)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to set the sample rate %d: %s\n", |
| avctx->sample_rate, aac_get_error(err)); |
| goto error; |
| } |
| |
| switch (avctx->channels) { |
| case 1: mode = MODE_1; sce = 1; cpe = 0; break; |
| case 2: mode = MODE_2; sce = 0; cpe = 1; break; |
| case 3: mode = MODE_1_2; sce = 1; cpe = 1; break; |
| case 4: mode = MODE_1_2_1; sce = 2; cpe = 1; break; |
| case 5: mode = MODE_1_2_2; sce = 1; cpe = 2; break; |
| case 6: mode = MODE_1_2_2_1; sce = 2; cpe = 2; break; |
| /* The version macro is introduced the same time as the 7.1 support, so this |
| should suffice. */ |
| #ifdef AACENCODER_LIB_VL0 |
| case 8: |
| sce = 2; |
| cpe = 3; |
| if (avctx->channel_layout == AV_CH_LAYOUT_7POINT1) { |
| mode = MODE_7_1_REAR_SURROUND; |
| } else { |
| // MODE_1_2_2_2_1 and MODE_7_1_FRONT_CENTER use the same channel layout |
| mode = MODE_7_1_FRONT_CENTER; |
| } |
| break; |
| #endif |
| default: |
| av_log(avctx, AV_LOG_ERROR, |
| "Unsupported number of channels %d\n", avctx->channels); |
| goto error; |
| } |
| |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELMODE, |
| mode)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, |
| "Unable to set channel mode %d: %s\n", mode, aac_get_error(err)); |
| goto error; |
| } |
| |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELORDER, |
| 1)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, |
| "Unable to set wav channel order %d: %s\n", |
| mode, aac_get_error(err)); |
| goto error; |
| } |
| |
| if (avctx->flags & AV_CODEC_FLAG_QSCALE || s->vbr) { |
| int mode = s->vbr ? s->vbr : avctx->global_quality; |
| if (mode < 1 || mode > 5) { |
| av_log(avctx, AV_LOG_WARNING, |
| "VBR quality %d out of range, should be 1-5\n", mode); |
| mode = av_clip(mode, 1, 5); |
| } |
| av_log(avctx, AV_LOG_WARNING, |
| "Note, the VBR setting is unsupported and only works with " |
| "some parameter combinations\n"); |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_BITRATEMODE, |
| mode)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to set the VBR bitrate mode %d: %s\n", |
| mode, aac_get_error(err)); |
| goto error; |
| } |
| } else { |
| if (avctx->bit_rate <= 0) { |
| if (avctx->profile == FF_PROFILE_AAC_HE_V2) { |
| sce = 1; |
| cpe = 0; |
| } |
| avctx->bit_rate = (96*sce + 128*cpe) * avctx->sample_rate / 44; |
| if (avctx->profile == FF_PROFILE_AAC_HE || |
| avctx->profile == FF_PROFILE_AAC_HE_V2 || |
| avctx->profile == FF_PROFILE_MPEG2_AAC_HE || |
| s->eld_sbr) |
| avctx->bit_rate /= 2; |
| } |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_BITRATE, |
| avctx->bit_rate)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to set the bitrate %"PRId64": %s\n", |
| (int64_t)avctx->bit_rate, aac_get_error(err)); |
| goto error; |
| } |
| } |
| |
| /* Choose bitstream format - if global header is requested, use |
| * raw access units, otherwise use ADTS. */ |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_TRANSMUX, |
| avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER ? 0 : s->latm ? 10 : 2)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to set the transmux format: %s\n", |
| aac_get_error(err)); |
| goto error; |
| } |
| |
| if (s->latm && s->header_period) { |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_HEADER_PERIOD, |
| s->header_period)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to set header period: %s\n", |
| aac_get_error(err)); |
| goto error; |
| } |
| } |
| |
| /* If no signaling mode is chosen, use explicit hierarchical signaling |
| * if using mp4 mode (raw access units, with global header) and |
| * implicit signaling if using ADTS. */ |
| if (s->signaling < 0) |
| s->signaling = avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER ? 2 : 0; |
| |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_SIGNALING_MODE, |
| s->signaling)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to set signaling mode %d: %s\n", |
| s->signaling, aac_get_error(err)); |
| goto error; |
| } |
| |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_AFTERBURNER, |
| s->afterburner)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to set afterburner to %d: %s\n", |
| s->afterburner, aac_get_error(err)); |
| goto error; |
| } |
| |
| if (avctx->cutoff > 0) { |
| if (avctx->cutoff < (avctx->sample_rate + 255) >> 8 || avctx->cutoff > 20000) { |
| av_log(avctx, AV_LOG_ERROR, "cutoff valid range is %d-20000\n", |
| (avctx->sample_rate + 255) >> 8); |
| goto error; |
| } |
| if ((err = aacEncoder_SetParam(s->handle, AACENC_BANDWIDTH, |
| avctx->cutoff)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to set the encoder bandwidth to %d: %s\n", |
| avctx->cutoff, aac_get_error(err)); |
| goto error; |
| } |
| } |
| |
| if ((err = aacEncEncode(s->handle, NULL, NULL, NULL, NULL)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to initialize the encoder: %s\n", |
| aac_get_error(err)); |
| return AVERROR(EINVAL); |
| } |
| |
| if ((err = aacEncInfo(s->handle, &info)) != AACENC_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Unable to get encoder info: %s\n", |
| aac_get_error(err)); |
| goto error; |
| } |
| |
| avctx->frame_size = info.frameLength; |
| avctx->initial_padding = info.encoderDelay; |
| ff_af_queue_init(avctx, &s->afq); |
| |
| if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) { |
| avctx->extradata_size = info.confSize; |
| avctx->extradata = av_mallocz(avctx->extradata_size + |
| AV_INPUT_BUFFER_PADDING_SIZE); |
| if (!avctx->extradata) { |
| ret = AVERROR(ENOMEM); |
| goto error; |
| } |
| |
| memcpy(avctx->extradata, info.confBuf, info.confSize); |
| } |
| return 0; |
| error: |
| aac_encode_close(avctx); |
| return ret; |
| } |
| |
| static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, |
| const AVFrame *frame, int *got_packet_ptr) |
| { |
| AACContext *s = avctx->priv_data; |
| AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 }; |
| AACENC_InArgs in_args = { 0 }; |
| AACENC_OutArgs out_args = { 0 }; |
| int in_buffer_identifier = IN_AUDIO_DATA; |
| int in_buffer_size, in_buffer_element_size; |
| int out_buffer_identifier = OUT_BITSTREAM_DATA; |
| int out_buffer_size, out_buffer_element_size; |
| void *in_ptr, *out_ptr; |
| int ret; |
| AACENC_ERROR err; |
| |
| /* handle end-of-stream small frame and flushing */ |
| if (!frame) { |
| in_args.numInSamples = -1; |
| } else { |
| in_ptr = frame->data[0]; |
| in_buffer_size = 2 * avctx->channels * frame->nb_samples; |
| in_buffer_element_size = 2; |
| |
| in_args.numInSamples = avctx->channels * frame->nb_samples; |
| in_buf.numBufs = 1; |
| in_buf.bufs = &in_ptr; |
| in_buf.bufferIdentifiers = &in_buffer_identifier; |
| in_buf.bufSizes = &in_buffer_size; |
| in_buf.bufElSizes = &in_buffer_element_size; |
| |
| /* add current frame to the queue */ |
| if ((ret = ff_af_queue_add(&s->afq, frame)) < 0) |
| return ret; |
| } |
| |
| /* The maximum packet size is 6144 bits aka 768 bytes per channel. */ |
| if ((ret = ff_alloc_packet2(avctx, avpkt, FFMAX(8192, 768 * avctx->channels), 0)) < 0) |
| return ret; |
| |
| out_ptr = avpkt->data; |
| out_buffer_size = avpkt->size; |
| out_buffer_element_size = 1; |
| out_buf.numBufs = 1; |
| out_buf.bufs = &out_ptr; |
| out_buf.bufferIdentifiers = &out_buffer_identifier; |
| out_buf.bufSizes = &out_buffer_size; |
| out_buf.bufElSizes = &out_buffer_element_size; |
| |
| if ((err = aacEncEncode(s->handle, &in_buf, &out_buf, &in_args, |
| &out_args)) != AACENC_OK) { |
| if (!frame && err == AACENC_ENCODE_EOF) |
| return 0; |
| av_log(avctx, AV_LOG_ERROR, "Unable to encode frame: %s\n", |
| aac_get_error(err)); |
| return AVERROR(EINVAL); |
| } |
| |
| if (!out_args.numOutBytes) |
| return 0; |
| |
| /* Get the next frame pts & duration */ |
| ff_af_queue_remove(&s->afq, avctx->frame_size, &avpkt->pts, |
| &avpkt->duration); |
| |
| avpkt->size = out_args.numOutBytes; |
| *got_packet_ptr = 1; |
| return 0; |
| } |
| |
| static const AVProfile profiles[] = { |
| { FF_PROFILE_AAC_LOW, "LC" }, |
| { FF_PROFILE_AAC_HE, "HE-AAC" }, |
| { FF_PROFILE_AAC_HE_V2, "HE-AACv2" }, |
| { FF_PROFILE_AAC_LD, "LD" }, |
| { FF_PROFILE_AAC_ELD, "ELD" }, |
| { FF_PROFILE_UNKNOWN }, |
| }; |
| |
| static const AVCodecDefault aac_encode_defaults[] = { |
| { "b", "0" }, |
| { NULL } |
| }; |
| |
| static const uint64_t aac_channel_layout[] = { |
| AV_CH_LAYOUT_MONO, |
| AV_CH_LAYOUT_STEREO, |
| AV_CH_LAYOUT_SURROUND, |
| AV_CH_LAYOUT_4POINT0, |
| AV_CH_LAYOUT_5POINT0_BACK, |
| AV_CH_LAYOUT_5POINT1_BACK, |
| #ifdef AACENCODER_LIB_VL0 |
| AV_CH_LAYOUT_7POINT1_WIDE_BACK, |
| AV_CH_LAYOUT_7POINT1, |
| #endif |
| 0, |
| }; |
| |
| static const int aac_sample_rates[] = { |
| 96000, 88200, 64000, 48000, 44100, 32000, |
| 24000, 22050, 16000, 12000, 11025, 8000, 0 |
| }; |
| |
| AVCodec ff_libfdk_aac_encoder = { |
| .name = "libfdk_aac", |
| .long_name = NULL_IF_CONFIG_SMALL("Fraunhofer FDK AAC"), |
| .type = AVMEDIA_TYPE_AUDIO, |
| .id = AV_CODEC_ID_AAC, |
| .priv_data_size = sizeof(AACContext), |
| .init = aac_encode_init, |
| .encode2 = aac_encode_frame, |
| .close = aac_encode_close, |
| .capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY, |
| .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, |
| AV_SAMPLE_FMT_NONE }, |
| .priv_class = &aac_enc_class, |
| .defaults = aac_encode_defaults, |
| .profiles = profiles, |
| .supported_samplerates = aac_sample_rates, |
| .channel_layouts = aac_channel_layout, |
| }; |
