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VA-API
2.19.0
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Sequence parameter for MPEG-2 encoding. More...
#include <va_enc_mpeg2.h>
Public Attributes | |
| uint32_t | intra_period |
| Period between I frames. | |
| uint32_t | ip_period |
| Period between I/P frames. | |
| uint16_t | picture_width |
| Picture width. More... | |
| uint16_t | picture_height |
| Picture height. More... | |
| uint32_t | bits_per_second |
| Initial bitrate set for this sequence in CBR or VBR modes. More... | |
| float | frame_rate |
| Frame rate. More... | |
| uint16_t | aspect_ratio_information |
| Same as the element in sequence_header() | |
| uint32_t | vbv_buffer_size |
| Define the size of VBV. | |
| uint32_t | new_gop_header |
| Flag to indicate the following GOP header are being updated. | |
| uint32_t | va_reserved [VA_PADDING_LOW] |
| Reserved bytes for future use, must be zero. | |
| uint32_t | profile_and_level_indication: 8 |
| Same as the element in Sequence extension() | |
| uint32_t | progressive_sequence: 1 |
| Same as the element in Sequence extension() | |
| uint32_t | chroma_format: 2 |
| Same as the element in Sequence extension() | |
| uint32_t | low_delay: 1 |
| Same as the element in Sequence extension() | |
| uint32_t | frame_rate_extension_n: 2 |
| Same as the element in Sequence extension() | |
| uint32_t | frame_rate_extension_d: 5 |
| Same as the element in Sequence extension() | |
| uint32_t | time_code: 25 |
| Time code. | |
| uint32_t | closed_gop: 1 |
| Same as the element in GOP header. | |
| uint32_t | broken_link: 1 |
| SAme as the element in GOP header. | |
Sequence parameter for MPEG-2 encoding.
This structure holds information for sequence_header() and sequence_extension().
If packed sequence headers mode is used, i.e. if the encoding pipeline was configured with the VA_ENC_PACKED_HEADER_SEQUENCE flag, then the driver expects two more buffers to be provided to the same vaRenderPicture() as this buffer:
| uint32_t VAEncSequenceParameterBufferMPEG2::bits_per_second |
Initial bitrate set for this sequence in CBR or VBR modes.
This field represents the initial bitrate value for this sequence if CBR or VBR mode is used, i.e. if the encoder pipeline was created with a #VAConfigAttribRateControl attribute set to either VA_RC_CBR or VA_RC_VBR.
bits_per_second may be derived from bit_rate.
| float VAEncSequenceParameterBufferMPEG2::frame_rate |
Frame rate.
Derived from frame_rate_value, frame_rate_extension_n and frame_rate_extension_d
| uint16_t VAEncSequenceParameterBufferMPEG2::picture_height |
Picture height.
A 14bits unsigned inter, the lower 12bits is vertical_size_value, and the upper 2bits is vertical_size_size_extension
| uint16_t VAEncSequenceParameterBufferMPEG2::picture_width |
Picture width.
A 14bits unsigned inter, the lower 12bits is horizontal_size_value, and the upper 2bits is horizontal_size_extension
1.8.13