ref: a040eb37e4cb924b1a00cdb493a709441885c344
parent: d8ebdcd89d5d19d283a73a2a81d3909b172e7e2d
parent: fa1a9290e6e7cd0bf0afff5213e73fa5f662a9e2
author: Yunqing Wang <yunqingwang@google.com>
date: Mon Feb 6 08:58:11 EST 2012
Merge "Allow to skip highest-resolution encoding in multi-resolution encoder"
--- a/vp8/encoder/pickinter.c
+++ b/vp8/encoder/pickinter.c
@@ -413,12 +413,11 @@
* such as 2, 4, 8. Will revisit it if needed.
* Should also try using a look-up table to see if it helps
* performance. */
- int round = cpi->oxcf.mr_down_sampling_factor.num/2;
int parent_mb_row, parent_mb_col;
- parent_mb_row = (mb_row*cpi->oxcf.mr_down_sampling_factor.den+round)
+ parent_mb_row = mb_row*cpi->oxcf.mr_down_sampling_factor.den
/cpi->oxcf.mr_down_sampling_factor.num;
- parent_mb_col = (mb_col*cpi->oxcf.mr_down_sampling_factor.den+round)
+ parent_mb_col = mb_col*cpi->oxcf.mr_down_sampling_factor.den
/cpi->oxcf.mr_down_sampling_factor.num;
parent_mb_index = parent_mb_row*cpi->mr_low_res_mb_cols + parent_mb_col;
}
--- a/vp8_multi_resolution_encoder.c
+++ b/vp8_multi_resolution_encoder.c
@@ -212,7 +212,10 @@
double psnr_totals[NUM_ENCODERS][4] = {{0,0}}; int psnr_count[NUM_ENCODERS] = {0};- /* Set the required target bitrates for each resolution level. */
+ /* Set the required target bitrates for each resolution level.
+ * If target bitrate for highest-resolution level is set to 0,
+ * (i.e. target_bitrate[0]=0), we skip encoding at that level.
+ */
unsigned int target_bitrate[NUM_ENCODERS]={1400, 500, 100};/* Enter the frame rate of the input video */
int framerate = 30;
@@ -221,6 +224,9 @@
dsf[1] controls down sampling from level 1 to level 2;
dsf[2] is not used. */
vpx_rational_t dsf[NUM_ENCODERS] = {{2, 1}, {2, 1}, {1, 1}};+ /* Encode starting from which resolution level. Normally it is 0 that
+ * means the original(highest) resolution. */
+ int s_lvl = 0;
if(argc!= (5+NUM_ENCODERS))
die("Usage: %s <width> <height> <infile> <outfile(s)> <output psnr?>\n",@@ -234,6 +240,21 @@
if(width < 16 || width%2 || height <16 || height%2)
die("Invalid resolution: %ldx%ld", width, height);+ /* Check to see if we need to encode all resolution levels */
+ for (i=0; i<NUM_ENCODERS; i++)
+ {+ if (target_bitrate[i])
+ break;
+ else
+ s_lvl += 1;
+ }
+
+ if (s_lvl >= NUM_ENCODERS)
+ {+ printf("No encoding: total number of encoders is 0!");+ return 0;
+ }
+
/* Open input video file for encoding */
if(!(infile = fopen(argv[3], "rb")))
die("Failed to open %s for reading", argv[3]);@@ -321,17 +342,15 @@
else
read_frame_p = read_frame_by_row;
- for (i=0; i< NUM_ENCODERS; i++)
- write_ivf_file_header(outfile[i], &cfg[i], 0);
-
/* Initialize multi-encoder */
- if(vpx_codec_enc_init_multi(&codec[0], interface, &cfg[0], NUM_ENCODERS,
- (show_psnr ? VPX_CODEC_USE_PSNR : 0), &dsf[0]))
- die_codec(&codec[0], "Failed to initialize encoder");
+ if(vpx_codec_enc_init_multi(&codec[s_lvl], interface, &cfg[s_lvl], s_lvl,
+ NUM_ENCODERS,
+ (show_psnr ? VPX_CODEC_USE_PSNR : 0), &dsf[s_lvl]))
+ die_codec(&codec[s_lvl], "Failed to initialize encoder");
/* The extra encoding configuration parameters can be set as follows. */
/* Set encoding speed */
- for ( i=0; i<NUM_ENCODERS; i++)
+ for ( i=s_lvl; i<NUM_ENCODERS; i++)
{int speed = -6;
if(vpx_codec_control(&codec[i], VP8E_SET_CPUUSED, speed))
@@ -341,14 +360,16 @@
* better performance. */
{unsigned int static_thresh = 1000;
- if(vpx_codec_control(&codec[0], VP8E_SET_STATIC_THRESHOLD, static_thresh))
- die_codec(&codec[0], "Failed to set static threshold");
+ if(vpx_codec_control(&codec[s_lvl], VP8E_SET_STATIC_THRESHOLD,
+ static_thresh))
+ die_codec(&codec[s_lvl], "Failed to set static threshold");
}
/* Set static thresh = 0 for other encoders for better quality */
- for ( i=1; i<NUM_ENCODERS; i++)
+ for ( i=s_lvl+1; i<NUM_ENCODERS; i++)
{unsigned int static_thresh = 0;
- if(vpx_codec_control(&codec[i], VP8E_SET_STATIC_THRESHOLD, static_thresh))
+ if(vpx_codec_control(&codec[i], VP8E_SET_STATIC_THRESHOLD,
+ static_thresh))
die_codec(&codec[i], "Failed to set static threshold");
}
@@ -355,6 +376,9 @@
frame_avail = 1;
got_data = 0;
+ for (i=s_lvl ; i< NUM_ENCODERS; i++)
+ write_ivf_file_header(outfile[i], &cfg[i], 0);
+
while(frame_avail || got_data)
{ vpx_codec_iter_t iter[NUM_ENCODERS]={NULL};@@ -381,11 +405,11 @@
}
/* Encode each frame at multi-levels */
- if(vpx_codec_encode(&codec[0], frame_avail? &raw[0] : NULL,
+ if(vpx_codec_encode(&codec[s_lvl], frame_avail? &raw[s_lvl] : NULL,
frame_cnt, 1, flags, arg_deadline))
- die_codec(&codec[0], "Failed to encode frame");
+ die_codec(&codec[s_lvl], "Failed to encode frame");
- for (i=NUM_ENCODERS-1; i>=0 ; i--)
+ for (i=NUM_ENCODERS-1; i>=s_lvl ; i--)
{got_data = 0;
@@ -428,7 +452,7 @@
fclose(infile);
- for (i=0; i< NUM_ENCODERS; i++)
+ for (i=s_lvl; i< NUM_ENCODERS; i++)
{ printf("Processed %ld frames.\n",(long int)frame_cnt-1);@@ -454,8 +478,11 @@
/* Try to rewrite the file header with the actual frame count */
if(!fseek(outfile[i], 0, SEEK_SET))
write_ivf_file_header(outfile[i], &cfg[i], frame_cnt-1);
- fclose(outfile[i]);
+ }
+ for (i=0; i< NUM_ENCODERS; i++)
+ {+ fclose(outfile[i]);
vpx_img_free(&raw[i]);
}
--- a/vpx/src/vpx_encoder.c
+++ b/vpx/src/vpx_encoder.c
@@ -69,6 +69,7 @@
vpx_codec_err_t vpx_codec_enc_init_multi_ver(vpx_codec_ctx_t *ctx,
vpx_codec_iface_t *iface,
vpx_codec_enc_cfg_t *cfg,
+ int s_lvl,
int num_enc,
vpx_codec_flags_t flags,
vpx_rational_t *dsf,
@@ -99,7 +100,7 @@
if(!(res = iface->enc.mr_get_mem_loc(cfg, &mem_loc)))
{- for (i = 0; i < num_enc; i++)
+ for (i = s_lvl; i < num_enc; i++)
{vpx_codec_priv_enc_mr_cfg_t mr_cfg;
@@ -112,7 +113,7 @@
}
mr_cfg.mr_low_res_mode_info = mem_loc;
- mr_cfg.mr_total_resolutions = num_enc;
+ mr_cfg.mr_total_resolutions = num_enc - s_lvl;
mr_cfg.mr_encoder_id = num_enc-1-i;
mr_cfg.mr_down_sampling_factor.num = dsf->num;
mr_cfg.mr_down_sampling_factor.den = dsf->den;
--- a/vpx/vpx_encoder.h
+++ b/vpx/vpx_encoder.h
@@ -688,6 +688,7 @@
* \param[in] ctx Pointer to this instance's context.
* \param[in] iface Pointer to the algorithm interface to use.
* \param[in] cfg Configuration to use, if known. May be NULL.
+ * \param[in] s_lvl Starting encoder id. Normally it is 0.
* \param[in] num_enc Total number of encoders.
* \param[in] flags Bitfield of VPX_CODEC_USE_* flags
* \param[in] dsf Pointer to down-sampling factors.
@@ -701,6 +702,7 @@
vpx_codec_err_t vpx_codec_enc_init_multi_ver(vpx_codec_ctx_t *ctx,
vpx_codec_iface_t *iface,
vpx_codec_enc_cfg_t *cfg,
+ int s_lvl,
int num_enc,
vpx_codec_flags_t flags,
vpx_rational_t *dsf,
@@ -711,8 +713,8 @@
*
* Ensures the ABI version parameter is properly set.
*/
-#define vpx_codec_enc_init_multi(ctx, iface, cfg, num_enc, flags, dsf) \
- vpx_codec_enc_init_multi_ver(ctx, iface, cfg, num_enc, flags, dsf, \
+#define vpx_codec_enc_init_multi(ctx, iface, cfg, s_lvl, num_enc, flags, dsf) \
+ vpx_codec_enc_init_multi_ver(ctx, iface, cfg, s_lvl, num_enc, flags, dsf, \
VPX_ENCODER_ABI_VERSION)