* High-resolution input video is down-sampled to lower-resolutions. The
* encoder then encodes the video and outputs multiple bitstreams with
* different resolutions.
+ *
+ * This test also allows for settings temporal layers for each spatial layer.
+ * Different number of temporal layers per spatial stream may be used.
+ * Currently up to 3 temporal layers per spatial stream (encoder) are supported
+ * in this test.
*/
+
+#include "./vpx_config.h"
+
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <math.h>
-#define VPX_CODEC_DISABLE_COMPAT 1
+#include <assert.h>
+#include <sys/time.h>
+#include "vpx_ports/vpx_timer.h"
#include "vpx/vpx_encoder.h"
#include "vpx/vp8cx.h"
#include "vpx_ports/mem_ops.h"
-#include "./tools_common.h"
+#include "../tools_common.h"
#define interface (vpx_codec_vp8_cx())
#define fourcc 0x30385056
-void usage_exit() {
+void usage_exit(void) {
exit(EXIT_FAILURE);
}
* bitstreams with resolution of 1280x720(level 0), 640x360(level 1), and
* 320x180(level 2) respectively.
*/
+
+/* Number of encoders (spatial resolutions) used in this test. */
#define NUM_ENCODERS 3
+/* Maximum number of temporal layers allowed for this test. */
+#define MAX_NUM_TEMPORAL_LAYERS 3
+
/* This example uses the scaler function in libyuv. */
#include "third_party/libyuv/include/libyuv/basic_types.h"
#include "third_party/libyuv/include/libyuv/scale.h"
(void) fwrite(header, 1, 12, outfile);
}
+/* Temporal scaling parameters */
+/* This sets all the temporal layer parameters given |num_temporal_layers|,
+ * including the target bit allocation across temporal layers. Bit allocation
+ * parameters will be passed in as user parameters in another version.
+ */
+static void set_temporal_layer_pattern(int num_temporal_layers,
+ vpx_codec_enc_cfg_t *cfg,
+ int bitrate,
+ int *layer_flags)
+{
+ assert(num_temporal_layers <= MAX_NUM_TEMPORAL_LAYERS);
+ switch (num_temporal_layers)
+ {
+ case 1:
+ {
+ /* 1-layer */
+ cfg->ts_number_layers = 1;
+ cfg->ts_periodicity = 1;
+ cfg->ts_rate_decimator[0] = 1;
+ cfg->ts_layer_id[0] = 0;
+ cfg->ts_target_bitrate[0] = bitrate;
+
+ // Update L only.
+ layer_flags[0] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
+ break;
+ }
+
+ case 2:
+ {
+ /* 2-layers, with sync point at first frame of layer 1. */
+ cfg->ts_number_layers = 2;
+ cfg->ts_periodicity = 2;
+ cfg->ts_rate_decimator[0] = 2;
+ cfg->ts_rate_decimator[1] = 1;
+ cfg->ts_layer_id[0] = 0;
+ cfg->ts_layer_id[1] = 1;
+ // Use 60/40 bit allocation as example.
+ cfg->ts_target_bitrate[0] = 0.6f * bitrate;
+ cfg->ts_target_bitrate[1] = bitrate;
+
+ /* 0=L, 1=GF */
+ // ARF is used as predictor for all frames, and is only updated on
+ // key frame. Sync point every 8 frames.
+
+ // Layer 0: predict from L and ARF, update L and G.
+ layer_flags[0] = VP8_EFLAG_NO_REF_GF |
+ VP8_EFLAG_NO_UPD_ARF;
+
+ // Layer 1: sync point: predict from L and ARF, and update G.
+ layer_flags[1] = VP8_EFLAG_NO_REF_GF |
+ VP8_EFLAG_NO_UPD_LAST |
+ VP8_EFLAG_NO_UPD_ARF;
+
+ // Layer 0, predict from L and ARF, update L.
+ layer_flags[2] = VP8_EFLAG_NO_REF_GF |
+ VP8_EFLAG_NO_UPD_GF |
+ VP8_EFLAG_NO_UPD_ARF;
+
+ // Layer 1: predict from L, G and ARF, and update G.
+ layer_flags[3] = VP8_EFLAG_NO_UPD_ARF |
+ VP8_EFLAG_NO_UPD_LAST |
+ VP8_EFLAG_NO_UPD_ENTROPY;
+
+ // Layer 0
+ layer_flags[4] = layer_flags[2];
+
+ // Layer 1
+ layer_flags[5] = layer_flags[3];
+
+ // Layer 0
+ layer_flags[6] = layer_flags[4];
+
+ // Layer 1
+ layer_flags[7] = layer_flags[5];
+ break;
+ }
+
+ case 3:
+ default:
+ {
+ // 3-layers structure where ARF is used as predictor for all frames,
+ // and is only updated on key frame.
+ // Sync points for layer 1 and 2 every 8 frames.
+ cfg->ts_number_layers = 3;
+ cfg->ts_periodicity = 4;
+ cfg->ts_rate_decimator[0] = 4;
+ cfg->ts_rate_decimator[1] = 2;
+ cfg->ts_rate_decimator[2] = 1;
+ cfg->ts_layer_id[0] = 0;
+ cfg->ts_layer_id[1] = 2;
+ cfg->ts_layer_id[2] = 1;
+ cfg->ts_layer_id[3] = 2;
+ // Use 40/20/40 bit allocation as example.
+ cfg->ts_target_bitrate[0] = 0.4f * bitrate;
+ cfg->ts_target_bitrate[1] = 0.6f * bitrate;
+ cfg->ts_target_bitrate[2] = bitrate;
+
+ /* 0=L, 1=GF, 2=ARF */
+
+ // Layer 0: predict from L and ARF; update L and G.
+ layer_flags[0] = VP8_EFLAG_NO_UPD_ARF |
+ VP8_EFLAG_NO_REF_GF;
+
+ // Layer 2: sync point: predict from L and ARF; update none.
+ layer_flags[1] = VP8_EFLAG_NO_REF_GF |
+ VP8_EFLAG_NO_UPD_GF |
+ VP8_EFLAG_NO_UPD_ARF |
+ VP8_EFLAG_NO_UPD_LAST |
+ VP8_EFLAG_NO_UPD_ENTROPY;
+
+ // Layer 1: sync point: predict from L and ARF; update G.
+ layer_flags[2] = VP8_EFLAG_NO_REF_GF |
+ VP8_EFLAG_NO_UPD_ARF |
+ VP8_EFLAG_NO_UPD_LAST;
+
+ // Layer 2: predict from L, G, ARF; update none.
+ layer_flags[3] = VP8_EFLAG_NO_UPD_GF |
+ VP8_EFLAG_NO_UPD_ARF |
+ VP8_EFLAG_NO_UPD_LAST |
+ VP8_EFLAG_NO_UPD_ENTROPY;
+
+ // Layer 0: predict from L and ARF; update L.
+ layer_flags[4] = VP8_EFLAG_NO_UPD_GF |
+ VP8_EFLAG_NO_UPD_ARF |
+ VP8_EFLAG_NO_REF_GF;
+
+ // Layer 2: predict from L, G, ARF; update none.
+ layer_flags[5] = layer_flags[3];
+
+ // Layer 1: predict from L, G, ARF; update G.
+ layer_flags[6] = VP8_EFLAG_NO_UPD_ARF |
+ VP8_EFLAG_NO_UPD_LAST;
+
+ // Layer 2: predict from L, G, ARF; update none.
+ layer_flags[7] = layer_flags[3];
+ break;
+ }
+ }
+}
+
+/* The periodicity of the pattern given the number of temporal layers. */
+static int periodicity_to_num_layers[MAX_NUM_TEMPORAL_LAYERS] = {1, 8, 8};
+
int main(int argc, char **argv)
{
- FILE *infile, *outfile[NUM_ENCODERS];
+ FILE *infile, *outfile[NUM_ENCODERS];
+ FILE *downsampled_input[NUM_ENCODERS - 1];
+ char filename[50];
vpx_codec_ctx_t codec[NUM_ENCODERS];
vpx_codec_enc_cfg_t cfg[NUM_ENCODERS];
- vpx_codec_pts_t frame_cnt = 0;
+ int frame_cnt = 0;
vpx_image_t raw[NUM_ENCODERS];
vpx_codec_err_t res[NUM_ENCODERS];
int i;
long width;
long height;
+ int length_frame;
int frame_avail;
int got_data;
int flags = 0;
+ int layer_id = 0;
+
+ int layer_flags[VPX_TS_MAX_PERIODICITY * NUM_ENCODERS]
+ = {0};
+ int flag_periodicity;
/*Currently, only realtime mode is supported in multi-resolution encoding.*/
int arg_deadline = VPX_DL_REALTIME;
don't need to know PSNR, which will skip PSNR calculation and save
encoding time. */
int show_psnr = 0;
+ int key_frame_insert = 0;
uint64_t psnr_sse_total[NUM_ENCODERS] = {0};
uint64_t psnr_samples_total[NUM_ENCODERS] = {0};
double psnr_totals[NUM_ENCODERS][4] = {{0,0}};
int psnr_count[NUM_ENCODERS] = {0};
+ int64_t cx_time = 0;
+
/* 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]={1000, 500, 100};
+
/* Enter the frame rate of the input video */
int framerate = 30;
+
/* Set down-sampling factor for each resolution level.
dsf[0] controls down sampling from level 0 to level 1;
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}};
- if(argc!= (5+NUM_ENCODERS))
- die("Usage: %s <width> <height> <infile> <outfile(s)> <output psnr?>\n",
+ /* Set the number of temporal layers for each encoder/resolution level,
+ * starting from highest resoln down to lowest resoln. */
+ unsigned int num_temporal_layers[NUM_ENCODERS] = {3, 3, 3};
+
+ if(argc!= (7 + 3 * NUM_ENCODERS))
+ die("Usage: %s <width> <height> <frame_rate> <infile> <outfile(s)> "
+ "<rate_encoder(s)> <temporal_layer(s)> <key_frame_insert> <output psnr?> \n",
argv[0]);
printf("Using %s\n",vpx_codec_iface_name(interface));
width = strtol(argv[1], NULL, 0);
height = strtol(argv[2], NULL, 0);
+ framerate = strtol(argv[3], NULL, 0);
if(width < 16 || width%2 || height <16 || height%2)
die("Invalid resolution: %ldx%ld", width, height);
/* Open input video file for encoding */
- if(!(infile = fopen(argv[3], "rb")))
- die("Failed to open %s for reading", argv[3]);
+ if(!(infile = fopen(argv[4], "rb")))
+ die("Failed to open %s for reading", argv[4]);
/* Open output file for each encoder to output bitstreams */
for (i=0; i< NUM_ENCODERS; i++)
continue;
}
- if(!(outfile[i] = fopen(argv[i+4], "wb")))
+ if(!(outfile[i] = fopen(argv[i+5], "wb")))
die("Failed to open %s for writing", argv[i+4]);
}
- show_psnr = strtol(argv[NUM_ENCODERS + 4], NULL, 0);
+ // Bitrates per spatial layer: overwrite default rates above.
+ for (i=0; i< NUM_ENCODERS; i++)
+ {
+ target_bitrate[i] = strtol(argv[NUM_ENCODERS + 5 + i], NULL, 0);
+ }
+
+ // Temporal layers per spatial layers: overwrite default settings above.
+ for (i=0; i< NUM_ENCODERS; i++)
+ {
+ num_temporal_layers[i] = strtol(argv[2 * NUM_ENCODERS + 5 + i], NULL, 0);
+ if (num_temporal_layers[i] < 1 || num_temporal_layers[i] > 3)
+ die("Invalid temporal layers: %d, Must be 1, 2, or 3. \n",
+ num_temporal_layers);
+ }
+
+ /* Open file to write out each spatially downsampled input stream. */
+ for (i=0; i< NUM_ENCODERS - 1; i++)
+ {
+ // Highest resoln is encoder 0.
+ if (sprintf(filename,"ds%d.yuv",NUM_ENCODERS - i) < 0)
+ {
+ return EXIT_FAILURE;
+ }
+ downsampled_input[i] = fopen(filename,"wb");
+ }
+
+ key_frame_insert = strtol(argv[3 * NUM_ENCODERS + 5], NULL, 0);
+
+ show_psnr = strtol(argv[3 * NUM_ENCODERS + 6], NULL, 0);
+
/* Populate default encoder configuration */
for (i=0; i< NUM_ENCODERS; i++)
/* Highest-resolution encoder settings */
cfg[0].g_w = width;
cfg[0].g_h = height;
- cfg[0].g_threads = 1; /* number of threads used */
- cfg[0].rc_dropframe_thresh = 30;
+ cfg[0].rc_dropframe_thresh = 0;
cfg[0].rc_end_usage = VPX_CBR;
cfg[0].rc_resize_allowed = 0;
- cfg[0].rc_min_quantizer = 4;
+ cfg[0].rc_min_quantizer = 2;
cfg[0].rc_max_quantizer = 56;
- cfg[0].rc_undershoot_pct = 98;
- cfg[0].rc_overshoot_pct = 100;
+ cfg[0].rc_undershoot_pct = 100;
+ cfg[0].rc_overshoot_pct = 15;
cfg[0].rc_buf_initial_sz = 500;
cfg[0].rc_buf_optimal_sz = 600;
cfg[0].rc_buf_sz = 1000;
/* Note: These 3 settings are copied to all levels. But, except the lowest
* resolution level, all other levels are set to VPX_KF_DISABLED internally.
*/
- //cfg[0].kf_mode = VPX_KF_DISABLED;
cfg[0].kf_mode = VPX_KF_AUTO;
cfg[0].kf_min_dist = 3000;
cfg[0].kf_max_dist = 3000;
{
memcpy(&cfg[i], &cfg[0], sizeof(vpx_codec_enc_cfg_t));
- cfg[i].g_threads = 1; /* number of threads used */
cfg[i].rc_target_bitrate = target_bitrate[i];
/* Note: Width & height of other-resolution encoders are calculated
if((cfg[i].g_h)%2)cfg[i].g_h++;
}
+
+ // Set the number of threads per encode/spatial layer.
+ // (1, 1, 1) means no encoder threading.
+ cfg[0].g_threads = 2;
+ cfg[1].g_threads = 1;
+ cfg[2].g_threads = 1;
+
/* Allocate image for each encoder */
for (i=0; i< NUM_ENCODERS; i++)
if(!vpx_img_alloc(&raw[i], VPX_IMG_FMT_I420, cfg[i].g_w, cfg[i].g_h, 32))
if(outfile[i])
write_ivf_file_header(outfile[i], &cfg[i], 0);
+ /* Temporal layers settings */
+ for ( i=0; i<NUM_ENCODERS; i++)
+ {
+ set_temporal_layer_pattern(num_temporal_layers[i],
+ &cfg[i],
+ cfg[i].rc_target_bitrate,
+ &layer_flags[i * VPX_TS_MAX_PERIODICITY]);
+ }
+
/* 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]))
for ( i=0; i<NUM_ENCODERS; i++)
{
int speed = -6;
+ /* Lower speed for the lowest resolution. */
+ if (i == NUM_ENCODERS - 1) speed = -4;
if(vpx_codec_control(&codec[i], VP8E_SET_CPUUSED, speed))
die_codec(&codec[i], "Failed to set cpu_used");
}
- /* Set static threshold. */
+ /* Set static threshold = 1 for all encoders */
for ( i=0; i<NUM_ENCODERS; i++)
{
- unsigned int static_thresh = 1;
- if(vpx_codec_control(&codec[i], VP8E_SET_STATIC_THRESHOLD, static_thresh))
+ if(vpx_codec_control(&codec[i], VP8E_SET_STATIC_THRESHOLD, 1))
die_codec(&codec[i], "Failed to set static threshold");
}
die_codec(&codec[i], "Failed to set noise_sensitivity");
}
+ /* Set the number of token partitions */
+ for ( i=0; i<NUM_ENCODERS; i++)
+ {
+ if(vpx_codec_control(&codec[i], VP8E_SET_TOKEN_PARTITIONS, 1))
+ die_codec(&codec[i], "Failed to set static threshold");
+ }
+
+ /* Set the max intra target bitrate */
+ for ( i=0; i<NUM_ENCODERS; i++)
+ {
+ unsigned int max_intra_size_pct =
+ (int)(((double)cfg[0].rc_buf_optimal_sz * 0.5) * framerate / 10);
+ if(vpx_codec_control(&codec[i], VP8E_SET_MAX_INTRA_BITRATE_PCT,
+ max_intra_size_pct))
+ die_codec(&codec[i], "Failed to set static threshold");
+ //printf("%d %d \n",i,max_intra_size_pct);
+ }
frame_avail = 1;
got_data = 0;
while(frame_avail || got_data)
{
+ struct vpx_usec_timer timer;
vpx_codec_iter_t iter[NUM_ENCODERS]={NULL};
const vpx_codec_cx_pkt_t *pkt[NUM_ENCODERS];
raw[i].planes[VPX_PLANE_U], raw[i].stride[VPX_PLANE_U],
raw[i].planes[VPX_PLANE_V], raw[i].stride[VPX_PLANE_V],
raw[i].d_w, raw[i].d_h, 1);
+ /* Write out down-sampled input. */
+ length_frame = cfg[i].g_w * cfg[i].g_h *3/2;
+ if (fwrite(raw[i].planes[0], 1, length_frame,
+ downsampled_input[NUM_ENCODERS - i - 1]) !=
+ length_frame)
+ {
+ return EXIT_FAILURE;
+ }
}
}
+ /* Set the flags (reference and update) for all the encoders.*/
+ for ( i=0; i<NUM_ENCODERS; i++)
+ {
+ layer_id = cfg[i].ts_layer_id[frame_cnt % cfg[i].ts_periodicity];
+ flags = 0;
+ flag_periodicity = periodicity_to_num_layers
+ [num_temporal_layers[i] - 1];
+ flags = layer_flags[i * VPX_TS_MAX_PERIODICITY +
+ frame_cnt % flag_periodicity];
+ // Key frame flag for first frame.
+ if (frame_cnt == 0)
+ {
+ flags |= VPX_EFLAG_FORCE_KF;
+ }
+ if (frame_cnt > 0 && frame_cnt == key_frame_insert)
+ {
+ flags = VPX_EFLAG_FORCE_KF;
+ }
+
+ vpx_codec_control(&codec[i], VP8E_SET_FRAME_FLAGS, flags);
+ vpx_codec_control(&codec[i], VP8E_SET_TEMPORAL_LAYER_ID, layer_id);
+ }
+
/* Encode each frame at multi-levels */
+ /* Note the flags must be set to 0 in the encode call if they are set
+ for each frame with the vpx_codec_control(), as done above. */
+ vpx_usec_timer_start(&timer);
if(vpx_codec_encode(&codec[0], frame_avail? &raw[0] : NULL,
- frame_cnt, 1, flags, arg_deadline))
+ frame_cnt, 1, 0, arg_deadline))
+ {
die_codec(&codec[0], "Failed to encode frame");
+ }
+ vpx_usec_timer_mark(&timer);
+ cx_time += vpx_usec_timer_elapsed(&timer);
for (i=NUM_ENCODERS-1; i>=0 ; i--)
{
got_data = 0;
-
while( (pkt[i] = vpx_codec_get_cx_data(&codec[i], &iter[i])) )
{
got_data = 1;
psnr_samples_total[i] += pkt[i]->data.psnr.samples[0];
for (j = 0; j < 4; j++)
{
- //fprintf(stderr, "%.3lf ", pkt[i]->data.psnr.psnr[j]);
psnr_totals[i][j] += pkt[i]->data.psnr.psnr[j];
}
psnr_count[i]++;
break;
}
printf(pkt[i]->kind == VPX_CODEC_CX_FRAME_PKT
- && (pkt[i]->data.frame.flags & VPX_FRAME_IS_KEY)? "K":".");
+ && (pkt[i]->data.frame.flags & VPX_FRAME_IS_KEY)? "K":"");
fflush(stdout);
}
}
frame_cnt++;
}
printf("\n");
+ printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n",
+ frame_cnt,
+ 1000 * (float)cx_time / (double)(frame_cnt * 1000000),
+ 1000000 * (double)frame_cnt / (double)cx_time);
fclose(infile);
projects / libvpx / blobdiff