diff options
Diffstat (limited to 'libAACenc/include/aacenc_lib.h')
| -rw-r--r-- | libAACenc/include/aacenc_lib.h | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/libAACenc/include/aacenc_lib.h b/libAACenc/include/aacenc_lib.h index 307dfd4..65a77f7 100644 --- a/libAACenc/include/aacenc_lib.h +++ b/libAACenc/include/aacenc_lib.h @@ -2,7 +2,7 @@ /* ----------------------------------------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android -© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. +© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. All rights reserved. 1. INTRODUCTION @@ -900,11 +900,7 @@ typedef enum This configuration can be used only with stereo input audio data. - 23: MPEG-4 AAC Low-Delay. - 39: MPEG-4 AAC Enhanced Low-Delay. Since there is no ::AUDIO_OBJECT_TYPE for ELD in - combination with SBR defined, enable SBR explicitely by ::AACENC_SBR_MODE parameter. - - 129: MPEG-2 AAC Low Complexity. - - 132: MPEG-2 AAC Low Complexity with Spectral Band Replication (HE-AAC). - - 156: MPEG-2 AAC Low Complexity with Spectral Band Replication and Parametric Stereo (HE-AAC v2). - This configuration can be used only with stereo input audio data. */ + combination with SBR defined, enable SBR explicitely by ::AACENC_SBR_MODE parameter. */ AACENC_BITRATE = 0x0101, /*!< Total encoder bitrate. This parameter is mandatory and interacts with ::AACENC_BITRATEMODE. - CBR: Bitrate in bits/second. @@ -961,6 +957,16 @@ typedef enum - 1 to fs/2: Frequency bandwidth in Hertz. (Experts only, better do not touch this value to avoid degraded audio quality) */ + AACENC_PEAK_BITRATE = 0x0207, /*!< Peak bitrate configuration parameter to adjust maximum bits per audio frame. Bitrate is in bits/second. + The peak bitrate will internally be limited to the chosen bitrate ::AACENC_BITRATE as lower limit + and the number_of_effective_channels*6144 bit as upper limit. + + Setting the peak bitrate equal to ::AACENC_BITRATE does not necessarily mean that the audio frames + will be of constant size. Since the peak bitate is in bits/second, the frame sizes can vary by + one byte in one or the other direction over various frames. However, it is not recommended to reduce + the peak pitrate to ::AACENC_BITRATE - it would disable the bitreservoir, which would affect the + audio quality by a large amount. */ + AACENC_TRANSMUX = 0x0300, /*!< Transport type to be used. See ::TRANSPORT_TYPE in FDK_audio.h. Following types can be configured in encoder library: - 0: raw access units @@ -1026,6 +1032,11 @@ typedef enum - ADTS: Maximum number of sub frames restricted to 4. - LOAS/LATM: Maximum number of sub frames restricted to 2.*/ + AACENC_AUDIOMUXVER = 0x0304, /*!< AudioMuxVersion to be used for LATM. (AudioMuxVersionA, currently not implemented): + - 0: Default, no transmission of tara Buffer fullness, no ASC length and including actual latm Buffer fullnes. + - 1: Transmission of tara Buffer fullness, ASC length and actual latm Buffer fullness. + - 2: Transmission of tara Buffer fullness, ASC length and maximum level of latm Buffer fullness. */ + AACENC_PROTECTION = 0x0306, /*!< Configure protection in tranpsort layer: - 0: No protection. (default) - 1: CRC active for ADTS bitstream format. */ |