diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/vp9_spatial_svc_encoder.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/examples/vp9_spatial_svc_encoder.c b/examples/vp9_spatial_svc_encoder.c index 9f4191150..b26e98734 100644 --- a/examples/vp9_spatial_svc_encoder.c +++ b/examples/vp9_spatial_svc_encoder.c @@ -544,6 +544,59 @@ vpx_codec_err_t parse_superframe_index(const uint8_t *data, } #endif +// Example pattern for spatial layers and 2 temporal layers used in the +// bypass/flexible mode. The pattern corresponds to the pattern +// VP9E_TEMPORAL_LAYERING_MODE_0101 (temporal_layering_mode == 2) used in +// non-flexible mode. +void set_frame_flags_bypass_mode(int sl, int tl, int num_spatial_layers, + int is_key_frame, + vpx_svc_ref_frame_config_t *ref_frame_config) { + for (sl = 0; sl < num_spatial_layers; ++sl) { + if (!tl) { + if (!sl) { + ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_GF | + VP8_EFLAG_NO_REF_ARF | + VP8_EFLAG_NO_UPD_GF | + VP8_EFLAG_NO_UPD_ARF; + } else { + if (is_key_frame) { + ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_LAST | + VP8_EFLAG_NO_REF_ARF | + VP8_EFLAG_NO_UPD_GF | + VP8_EFLAG_NO_UPD_ARF; + } else { + ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_ARF | + VP8_EFLAG_NO_UPD_GF | + VP8_EFLAG_NO_UPD_ARF; + } + } + } else if (tl == 1) { + if (!sl) { + ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_GF | + VP8_EFLAG_NO_REF_ARF | + VP8_EFLAG_NO_UPD_LAST | + VP8_EFLAG_NO_UPD_GF; + } else { + ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_ARF | + VP8_EFLAG_NO_UPD_LAST | + VP8_EFLAG_NO_UPD_GF; + } + } + if (tl == 0) { + ref_frame_config->lst_fb_idx[sl] = sl; + if (sl) + ref_frame_config->gld_fb_idx[sl] = sl - 1; + else + ref_frame_config->gld_fb_idx[sl] = 0; + ref_frame_config->alt_fb_idx[sl] = 0; + } else if (tl == 1) { + ref_frame_config->lst_fb_idx[sl] = sl; + ref_frame_config->gld_fb_idx[sl] = num_spatial_layers + sl - 1; + ref_frame_config->alt_fb_idx[sl] = num_spatial_layers + sl; + } + } +} + int main(int argc, const char **argv) { AppInput app_input = {0}; VpxVideoWriter *writer = NULL; @@ -564,6 +617,7 @@ int main(int argc, const char **argv) { VpxVideoWriter *outfile[VPX_TS_MAX_LAYERS] = {NULL}; struct RateControlStats rc; vpx_svc_layer_id_t layer_id; + vpx_svc_ref_frame_config_t ref_frame_config; int sl, tl; double sum_bitrate = 0.0; double sum_bitrate2 = 0.0; @@ -653,6 +707,30 @@ int main(int argc, const char **argv) { end_of_stream = 1; } + // For BYPASS/FLEXIBLE mode, set the frame flags (reference and updates) + // and the buffer indices for each spatial layer of the current + // (super)frame to be encoded. The temporal layer_id for the current frame + // also needs to be set. + // TODO(marpan): Should rename the "VP9E_TEMPORAL_LAYERING_MODE_BYPASS" + // mode to "VP9E_LAYERING_MODE_BYPASS". + if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) { + // Example for 2 temporal layers. + if (frame_cnt % 2 == 0) + layer_id.temporal_layer_id = 0; + else + layer_id.temporal_layer_id = 1; + // Note that we only set the temporal layer_id, since we are calling + // the encode for the whole superframe. The encoder will internally loop + // over all the spatial layers for the current superframe. + vpx_codec_control(&codec, VP9E_SET_SVC_LAYER_ID, &layer_id); + set_frame_flags_bypass_mode(sl, layer_id.temporal_layer_id, + svc_ctx.spatial_layers, + frame_cnt == 0, + &ref_frame_config); + vpx_codec_control(&codec, VP9E_SET_SVC_REF_FRAME_CONFIG, + &ref_frame_config); + } + vpx_usec_timer_start(&timer); res = vpx_svc_encode(&svc_ctx, &codec, (end_of_stream ? NULL : &raw), pts, frame_duration, svc_ctx.speed >= 5 ? |