// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2019 BayLibre, SAS * Author: Maxime Jourdan <[email protected]> */ #include <media/v4l2-mem2mem.h> #include <media/videobuf2-dma-contig.h> #include "vdec_helpers.h" #include "dos_regs.h" #include "codec_h264.h" #define SIZE_EXT_FW … #define SIZE_WORKSPACE … #define SIZE_SEI … /* * Offset added by the firmware which must be substracted * from the workspace phyaddr */ #define WORKSPACE_BUF_OFFSET … /* ISR status */ #define CMD_MASK … #define CMD_SRC_CHANGE … #define CMD_FRAMES_READY … #define CMD_FATAL_ERROR … #define CMD_BAD_WIDTH … #define CMD_BAD_HEIGHT … #define SEI_DATA_READY … /* Picture type */ #define PIC_TOP_BOT … #define PIC_BOT_TOP … /* Size of Motion Vector per macroblock */ #define MB_MV_SIZE … /* Frame status data */ #define PIC_STRUCT_BIT … #define PIC_STRUCT_MASK … #define BUF_IDX_MASK … #define ERROR_FLAG … #define OFFSET_BIT … #define OFFSET_MASK … /* Bitstream parsed data */ #define MB_TOTAL_BIT … #define MB_TOTAL_MASK … #define MB_WIDTH_MASK … #define MAX_REF_BIT … #define MAX_REF_MASK … #define AR_IDC_BIT … #define AR_IDC_MASK … #define AR_PRESENT_FLAG … #define AR_EXTEND … /* * Buffer to send to the ESPARSER to signal End Of Stream for H.264. * This is a 16x16 encoded picture that will trigger drain firmware-side. * There is no known alternative. */ static const u8 eos_sequence[SZ_4K] = …; static const u8 *codec_h264_eos_sequence(u32 *len) { … } struct codec_h264 { … }; static int codec_h264_can_recycle(struct amvdec_core *core) { … } static void codec_h264_recycle(struct amvdec_core *core, u32 buf_idx) { … } static int codec_h264_start(struct amvdec_session *sess) { … } static int codec_h264_stop(struct amvdec_session *sess) { … } static int codec_h264_load_extended_firmware(struct amvdec_session *sess, const u8 *data, u32 len) { … } static const struct v4l2_fract par_table[] = …; static void codec_h264_set_par(struct amvdec_session *sess) { … } static void codec_h264_resume(struct amvdec_session *sess) { … } /* * Configure the H.264 decoder when the parser detected a parameter set change */ static void codec_h264_src_change(struct amvdec_session *sess) { … } /* * The bitstream offset is split in half in 2 different registers. * Fetch its MSB here, which location depends on the frame number. */ static u32 get_offset_msb(struct amvdec_core *core, int frame_num) { … } static void codec_h264_frames_ready(struct amvdec_session *sess, u32 status) { … } static irqreturn_t codec_h264_threaded_isr(struct amvdec_session *sess) { … } static irqreturn_t codec_h264_isr(struct amvdec_session *sess) { … } struct amvdec_codec_ops codec_h264_ops = …;
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