v2: rebased
Signed-off-by: Xiang, Haihao <haihao.xi...@intel.com>
Tested-by: Luo, Focus <focus....@intel.com>
---
src/gen6_mfc_common.c | 70 ++++++++++++++++++++++++++++++---------------------
1 file changed, 42 insertions(+), 28 deletions(-)
diff --git a/src/gen6_mfc_common.c b/src/gen6_mfc_common.c
index 0a8720b..ff3e3ae 100644
--- a/src/gen6_mfc_common.c
+++ b/src/gen6_mfc_common.c
@@ -94,34 +94,22 @@ static void intel_mfc_brc_init(struct encode_state
*encode_state,
struct intel_encoder_context* encoder_context)
{
struct gen6_mfc_context *mfc_context = encoder_context->mfc_context;
- double bitrate = encoder_context->brc.bits_per_second[0];
- double framerate = (double)encoder_context->brc.framerate_per_100s[0] /
100.0;
+ double bitrate, framerate;
+ double qp1_size = 0.1 * 8 * 3 * encoder_context->frame_width_in_pixel *
encoder_context->frame_height_in_pixel / 2;
+ double qp51_size = 0.001 * 8 * 3 * encoder_context->frame_width_in_pixel *
encoder_context->frame_height_in_pixel / 2;
+ double bpf, factor;
int inum = encoder_context->brc.num_iframes_in_gop,
pnum = encoder_context->brc.num_pframes_in_gop,
bnum = encoder_context->brc.num_bframes_in_gop; /* Gop structure:
number of I, P, B frames in the Gop. */
int intra_period = encoder_context->brc.gop_size;
- double qp1_size = 0.1 * 8 * 3 * encoder_context->frame_width_in_pixel *
encoder_context->frame_height_in_pixel / 2;
- double qp51_size = 0.001 * 8 * 3 * encoder_context->frame_width_in_pixel *
encoder_context->frame_height_in_pixel / 2;
- double bpf;
int i;
mfc_context->brc.mode = encoder_context->rate_control_mode;
- for (i = 0; i < 3; i++) {
- mfc_context->brc.qp_prime_y[0][i] = 26;
- }
-
- mfc_context->brc.target_frame_size[0][SLICE_TYPE_I] =
(int)((double)((bitrate * intra_period)/framerate) /
- (double)(inum +
BRC_PWEIGHT * pnum + BRC_BWEIGHT * bnum));
- mfc_context->brc.target_frame_size[0][SLICE_TYPE_P] = BRC_PWEIGHT *
mfc_context->brc.target_frame_size[0][SLICE_TYPE_I];
- mfc_context->brc.target_frame_size[0][SLICE_TYPE_B] = BRC_BWEIGHT *
mfc_context->brc.target_frame_size[0][SLICE_TYPE_I];
-
mfc_context->brc.gop_nums[SLICE_TYPE_I] = inum;
mfc_context->brc.gop_nums[SLICE_TYPE_P] = pnum;
mfc_context->brc.gop_nums[SLICE_TYPE_B] = bnum;
- bpf = mfc_context->brc.bits_per_frame[0] = bitrate/framerate;
-
mfc_context->hrd.buffer_size = encoder_context->brc.hrd_buffer_size;
mfc_context->hrd.current_buffer_fullness =
(double)(encoder_context->brc.hrd_initial_buffer_fullness <
mfc_context->hrd.buffer_size) ?
@@ -130,20 +118,46 @@ static void intel_mfc_brc_init(struct encode_state
*encode_state,
mfc_context->hrd.buffer_capacity =
(double)mfc_context->hrd.buffer_size/qp1_size;
mfc_context->hrd.violation_noted = 0;
- if ((bpf > qp51_size) && (bpf < qp1_size)) {
- mfc_context->brc.qp_prime_y[0][SLICE_TYPE_P] = 51 - 50*(bpf -
qp51_size)/(qp1_size - qp51_size);
- }
- else if (bpf >= qp1_size)
- mfc_context->brc.qp_prime_y[0][SLICE_TYPE_P] = 1;
- else if (bpf <= qp51_size)
- mfc_context->brc.qp_prime_y[0][SLICE_TYPE_P] = 51;
+ for (i = 0; i < encoder_context->layer.num_layers; i++) {
+ mfc_context->brc.qp_prime_y[i][SLICE_TYPE_I] = 26;
+ mfc_context->brc.qp_prime_y[i][SLICE_TYPE_P] = 26;
+ mfc_context->brc.qp_prime_y[i][SLICE_TYPE_B] = 26;
- mfc_context->brc.qp_prime_y[0][SLICE_TYPE_I] =
mfc_context->brc.qp_prime_y[0][SLICE_TYPE_P];
- mfc_context->brc.qp_prime_y[0][SLICE_TYPE_B] =
mfc_context->brc.qp_prime_y[0][SLICE_TYPE_I];
+ if (i == 0) {
+ bitrate = encoder_context->brc.bits_per_second[0];
+ framerate = (double)encoder_context->brc.framerate_per_100s[0] /
100.0;
+ } else {
+ bitrate = (encoder_context->brc.bits_per_second[i] -
encoder_context->brc.bits_per_second[i - 1]);
+ framerate = (double)(encoder_context->brc.framerate_per_100s[i] -
encoder_context->brc.framerate_per_100s[i - 1]) / 100.0;
+ }
+
+ if (i == encoder_context->layer.num_layers - 1)
+ factor = 1.0;
+ else
+ factor = (double)encoder_context->brc.framerate_per_100s[i] /
encoder_context->brc.framerate_per_100s[i + 1];
+
+ mfc_context->brc.target_frame_size[i][SLICE_TYPE_I] =
(int)((double)((bitrate * intra_period * factor)/framerate) /
+
(double)(inum + BRC_PWEIGHT * pnum * factor + BRC_BWEIGHT * bnum * factor));
+ mfc_context->brc.target_frame_size[i][SLICE_TYPE_P] = BRC_PWEIGHT *
mfc_context->brc.target_frame_size[i][SLICE_TYPE_I];
+ mfc_context->brc.target_frame_size[i][SLICE_TYPE_B] = BRC_BWEIGHT *
mfc_context->brc.target_frame_size[i][SLICE_TYPE_I];
+
+ bpf = mfc_context->brc.bits_per_frame[i] = bitrate/framerate;
- BRC_CLIP(mfc_context->brc.qp_prime_y[0][SLICE_TYPE_I], 1, 51);
- BRC_CLIP(mfc_context->brc.qp_prime_y[0][SLICE_TYPE_P], 1, 51);
- BRC_CLIP(mfc_context->brc.qp_prime_y[0][SLICE_TYPE_B], 1, 51);
+ if ((bpf > qp51_size) && (bpf < qp1_size)) {
+ mfc_context->brc.qp_prime_y[i][SLICE_TYPE_P] = 51 - 50*(bpf -
qp51_size)/(qp1_size - qp51_size);
+ }
+ else if (bpf >= qp1_size)
+ mfc_context->brc.qp_prime_y[i][SLICE_TYPE_P] = 1;
+ else if (bpf <= qp51_size)
+ mfc_context->brc.qp_prime_y[i][SLICE_TYPE_P] = 51;
+
+ mfc_context->brc.qp_prime_y[i][SLICE_TYPE_I] =
mfc_context->brc.qp_prime_y[i][SLICE_TYPE_P];
+ mfc_context->brc.qp_prime_y[i][SLICE_TYPE_B] =
mfc_context->brc.qp_prime_y[i][SLICE_TYPE_I];
+
+ BRC_CLIP(mfc_context->brc.qp_prime_y[i][SLICE_TYPE_I], 1, 51);
+ BRC_CLIP(mfc_context->brc.qp_prime_y[i][SLICE_TYPE_P], 1, 51);
+ BRC_CLIP(mfc_context->brc.qp_prime_y[i][SLICE_TYPE_B], 1, 51);
+ }
}
int intel_mfc_update_hrd(struct encode_state *encode_state,
--
1.9.1
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