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libavcodec/libfdk-aacenc: Enable writing DRC metadata 

Signed-off-by: JonHGee <JonHGee@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
JonHGee 2023-02-28 21:25:13 +00:00 committed by Martin Storsjö
parent f88a4cb5e0
commit 3ff4a3d2ec
1 changed files with 54 additions and 13 deletions
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67
libavcodec/libfdk-aacenc.c
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@ -46,6 +46,13 @@ typedef struct AACContext {
int latm;
int header_period;
int vbr;
int drc_profile;
int drc_target_ref;
int comp_profile;
int comp_target_ref;
int prog_ref;
int metadata_mode;
AACENC_MetaData metaDataSetup;
AudioFrameQueue afq;
} AACContext;
@ -64,6 +71,11 @@ static const AVOption aac_enc_options[] = {
{ "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 },
{ "drc_profile", "The desired compression profile for AAC DRC", offsetof(AACContext, drc_profile), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 256, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
{ "drc_target_ref", "Expected target reference level at decoder side in dB (for clipping prevention/limiter)", offsetof(AACContext, drc_target_ref), AV_OPT_TYPE_INT, { .i64 = 0.0 }, -31.75, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
{ "comp_profile", "The desired compression profile for AAC DRC", offsetof(AACContext, comp_profile), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 256, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
{ "comp_target_ref", "Expected target reference level at decoder side in dB (for clipping prevention/limiter)", offsetof(AACContext, comp_target_ref), AV_OPT_TYPE_INT, { .i64 = 0.0 }, -31.75, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
{ "prog_ref", "The program reference level or dialog level in dB", offsetof(AACContext, prog_ref), AV_OPT_TYPE_INT, { .i64 = 0.0 }, -31.75, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
FF_AAC_PROFILE_OPTS
{ NULL }
};
@ -319,6 +331,30 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
}
}
s->metadata_mode = 0;
if (s->prog_ref) {
s->metadata_mode = 1;
s->metaDataSetup.prog_ref_level_present = 1;
s->metaDataSetup.prog_ref_level = s->prog_ref << 16;
}
if (s->drc_profile) {
s->metadata_mode = 1;
s->metaDataSetup.drc_profile = s->drc_profile;
s->metaDataSetup.drc_TargetRefLevel = s->drc_target_ref << 16;
if (s->comp_profile) {
/* Including the comp_profile means that we need to set the mode to ETSI */
s->metadata_mode = 2;
s->metaDataSetup.comp_profile = s->comp_profile;
s->metaDataSetup.comp_TargetRefLevel = s->comp_target_ref << 16;
}
}
if ((err = aacEncoder_SetParam(s->handle, AACENC_METADATA_MODE, s->metadata_mode)) != AACENC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set metadata mode to %d: %s\n",
s->metadata_mode, 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));
@ -363,11 +399,13 @@ static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
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;
void* inBuffer[] = { 0, &s->metaDataSetup };
int in_buffer_identifiers[] = { IN_AUDIO_DATA, IN_METADATA_SETUP };
int in_buffer_element_sizes[] = { 2, sizeof(AACENC_MetaData) };
int in_buffer_sizes[] = { 0, sizeof(s->metaDataSetup) };
int out_buffer_identifier = OUT_BITSTREAM_DATA;
int out_buffer_size, out_buffer_element_size;
void *in_ptr, *out_ptr;
void *out_ptr;
int ret;
uint8_t dummy_buf[1];
AACENC_ERROR err;
@ -376,13 +414,12 @@ static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
if (!frame) {
/* Must be a non-null pointer, even if it's a dummy. We could use
* the address of anything else on the stack as well. */
in_ptr = dummy_buf;
in_buffer_size = 0;
inBuffer[0] = dummy_buf;
in_args.numInSamples = -1;
} else {
in_ptr = frame->data[0];
in_buffer_size = 2 * avctx->ch_layout.nb_channels * frame->nb_samples;
inBuffer[0] = frame->data[0];
in_buffer_sizes[0] = 2 * avctx->ch_layout.nb_channels * frame->nb_samples;
in_args.numInSamples = avctx->ch_layout.nb_channels * frame->nb_samples;
@ -391,12 +428,16 @@ static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
return ret;
}
in_buffer_element_size = 2;
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;
if (s->metadata_mode == 0) {
in_buf.numBufs = 1;
} else {
in_buf.numBufs = 2;
}
in_buf.bufs = (void**)inBuffer;
in_buf.bufferIdentifiers = in_buffer_identifiers;
in_buf.bufSizes = in_buffer_sizes;
in_buf.bufElSizes = in_buffer_element_sizes;
/* The maximum packet size is 6144 bits aka 768 bytes per channel. */
ret = ff_alloc_packet(avctx, avpkt, FFMAX(8192, 768 * avctx->ch_layout.nb_channels));