diff options
Diffstat (limited to 'gst-libs/gst/vaapi/gstvaapiencoder_h264.c')
| -rw-r--r-- | gst-libs/gst/vaapi/gstvaapiencoder_h264.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/gst-libs/gst/vaapi/gstvaapiencoder_h264.c b/gst-libs/gst/vaapi/gstvaapiencoder_h264.c index 601a4be2..a3824124 100644 --- a/gst-libs/gst/vaapi/gstvaapiencoder_h264.c +++ b/gst-libs/gst/vaapi/gstvaapiencoder_h264.c @@ -76,6 +76,37 @@ #define GST_H264_NAL_REF_IDC_MEDIUM 2 #define GST_H264_NAL_REF_IDC_HIGH 3 +typedef enum +{ + GST_VAAPI_ENCODER_H264_COMPLIANCE_MODE_STRICT = 0, + GST_VAAPI_ENCODER_H264_COMPLIANCE_MODE_RESTRICT_CODED_BUFFER_ALLOC = 1, +} GstVaapiEnoderH264ComplianceMode; + +static GType +gst_vaapi_encoder_h264_compliance_mode_type (void) +{ + static GType gtype = 0; + + if (gtype == 0) { + static const GEnumValue values[] = { + {GST_VAAPI_ENCODER_H264_COMPLIANCE_MODE_STRICT, + "Strict compliance to the H264 Specification ", + "strict"}, + /* The main intention is to reduce the CodedBuffer Size allocation. + * This will help to get better performance in some of the Intel + * platforms which has LLC restirictions */ + {GST_VAAPI_ENCODER_H264_COMPLIANCE_MODE_RESTRICT_CODED_BUFFER_ALLOC, + "Restict the allocation size of coded-buffer", + "restrict-buf-alloc"}, + {0, NULL, NULL}, + }; + + gtype = + g_enum_register_static ("GstVaapiEncoderH264ComplianceMode", values); + } + return gtype; +} + /* only for internal usage, values won't be equal to actual payload type */ typedef enum { @@ -717,6 +748,10 @@ struct _GstVaapiEncoderH264 GstVaapiH264ViewReorderPool reorder_pools[MAX_NUM_VIEWS]; gboolean use_aud; + + /* Complance mode */ + GstVaapiEnoderH264ComplianceMode compliance_mode; + guint min_cr; // Minimum Compression Ratio (A.3.1) }; /* Write a SEI buffering period payload */ @@ -1140,6 +1175,7 @@ ensure_level (GstVaapiEncoderH264 * encoder) encoder->level = limits_table[i].level; encoder->level_idc = limits_table[i].level_idc; + encoder->min_cr = limits_table[i].MinCR; return TRUE; /* ERRORS */ @@ -2880,6 +2916,17 @@ set_context_info (GstVaapiEncoder * base_encoder) /* Account for slice header */ base_encoder->codedbuf_size += encoder->num_slices * (4 + GST_ROUND_UP_8 (MAX_SLICE_HDR_SIZE) / 8); + /* Some of the Intel Platforms(eg: APL) doesn't have LLC so + * the driver call cflush to ensure data consistency which is an + * expensive operation but we can still reduce the impact by + * limitting the pre-calculated coded_buffer size. This is not + * strictly following the h264 specification, but should be safe + * enough with intel-vaapi-driver. Our test cases showing significat + * performance improvement on APL platfrom with small coded-buffer size */ + if (encoder->compliance_mode == + GST_VAAPI_ENCODER_H264_COMPLIANCE_MODE_RESTRICT_CODED_BUFFER_ALLOC) + base_encoder->codedbuf_size /= encoder->min_cr; + base_encoder->context_info.entrypoint = encoder->entrypoint; @@ -2959,6 +3006,9 @@ gst_vaapi_encoder_h264_init (GstVaapiEncoder * base_encoder) ref_pool->max_reflist1_count = 1; } + encoder->compliance_mode = GST_VAAPI_ENCODER_H264_COMPLIANCE_MODE_STRICT; + encoder->min_cr = 1; + return TRUE; } @@ -3051,6 +3101,10 @@ gst_vaapi_encoder_h264_set_property (GstVaapiEncoder * base_encoder, case GST_VAAPI_ENCODER_H264_PROP_AUD: encoder->use_aud = g_value_get_boolean (value); break; + case GST_VAAPI_ENCODER_H264_PROP_COMPLIANCE_MODE: + encoder->compliance_mode = g_value_get_enum (value); + break; + default: return GST_VAAPI_ENCODER_STATUS_ERROR_INVALID_PARAMETER; } @@ -3228,6 +3282,21 @@ gst_vaapi_encoder_h264_get_default_properties (void) "Use AU (Access Unit) delimeter", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + /** + * GstVaapiEncoderH264:Compliance Mode: + * + * Encode Tuning(Tweaking) with different compliance modes . + * + * + */ + GST_VAAPI_ENCODER_PROPERTIES_APPEND (props, + GST_VAAPI_ENCODER_H264_PROP_COMPLIANCE_MODE, + g_param_spec_enum ("compliance-mode", + "Spec Compliance Mode", + "Tune Encode quality/performance by relaxing specification compliance restrictions", + gst_vaapi_encoder_h264_compliance_mode_type (), + GST_VAAPI_ENCODER_H264_COMPLIANCE_MODE_STRICT, G_PARAM_READWRITE)); + return props; } |