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| author | Paul Wilkins <paulwilkins@google.com> | 2011-01-07 18:29:37 +0000 |
|---|---|---|
| committer | Paul Wilkins <paulwilkins@google.com> | 2011-01-07 18:46:29 +0000 |
| commit | e0846c9c8c374a07911ced982ce68949886d0f21 (patch) | |
| tree | 39424a4195d3ff9b812176c60bc8eaadcc2d12aa /vpx/vp8cx.h | |
| parent | 3af3593c8ecb2a724c3c9f63e2186366550854fa (diff) | |
| download | libvpx-e0846c9c8c374a07911ced982ce68949886d0f21.tar libvpx-e0846c9c8c374a07911ced982ce68949886d0f21.tar.gz libvpx-e0846c9c8c374a07911ced982ce68949886d0f21.tar.bz2 libvpx-e0846c9c8c374a07911ced982ce68949886d0f21.zip | |
CQ Mode
The merge includes hooks to for CQ mode and other code
changes merged from the test branch.
CQ mode attempts to maintain a more stable quantizer within a clip
whilst also trying to adhere to a guidline maximum bitrate.
The existing target data rate parameter is used to specify the
guideline maximum bitrate.
A new parameter allows the user to specify a target CQ level.
For normal (non kf/gf/arf) frames, the quantizer will not drop BELOW the
user specified value (0-63). However, in some cases the encoder may
choose to impose a target CQ that is above that specified by the user,
if it estimates that consistent use of the target value is not compatible
with guideline maximum bitrate.
Change-Id: I2221f9eecae8cc3c431d36caf83503941b25e4c1
Diffstat (limited to 'vpx/vp8cx.h')
| -rw-r--r-- | vpx/vp8cx.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/vpx/vp8cx.h b/vpx/vp8cx.h index 3ed1cf182..d574c4462 100644 --- a/vpx/vp8cx.h +++ b/vpx/vp8cx.h @@ -141,6 +141,7 @@ enum vp8e_enc_control_id VP8E_SET_ARNR_STRENGTH , /**< control function to set the filter strength for the arf */ VP8E_SET_ARNR_TYPE , /**< control function to set the type of filter to use for the arf*/ VP8E_SET_TUNING, /**< control function to set visual tuning */ + VP8E_SET_CQ_LEVEL, /**< control function to set constrained quality level */ }; /*!\brief vpx 1-D scaling mode @@ -267,6 +268,7 @@ VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_MAXFRAMES, unsigned int) VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_STRENGTH , unsigned int) VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_TYPE , unsigned int) VPX_CTRL_USE_TYPE(VP8E_SET_TUNING, vp8e_tuning) +VPX_CTRL_USE_TYPE(VP8E_SET_CQ_LEVEL , unsigned int) VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER, int *) VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER_64, int *) |