From 7061bf0925a7d6c5899bbe710b2b8cdae9005274 Mon Sep 17 00:00:00 2001 From: Vittorio Giovara Date: Mon, 8 Jun 2015 13:00:49 +0100 Subject: mpegvideo: Move Picture-related functions to a separate file --- libavcodec/mpegpicture.h | 109 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 libavcodec/mpegpicture.h (limited to 'libavcodec/mpegpicture.h') diff --git a/libavcodec/mpegpicture.h b/libavcodec/mpegpicture.h new file mode 100644 index 0000000000..0588f02ee5 --- /dev/null +++ b/libavcodec/mpegpicture.h @@ -0,0 +1,109 @@ +/* + * Mpeg video formats-related defines and utility functions + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_MPEGPICTURE_H +#define AVCODEC_MPEGPICTURE_H + +#include + +#include "libavutil/frame.h" + +#include "avcodec.h" +#include "motion_est.h" +#include "thread.h" + +#define MAX_PICTURE_COUNT 32 +#define EDGE_WIDTH 16 + +typedef struct ScratchpadContext { + uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data + uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision + uint8_t *obmc_scratchpad; + uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers +} ScratchpadContext; + +/** + * Picture. + */ +typedef struct Picture { + struct AVFrame *f; + ThreadFrame tf; + + AVBufferRef *qscale_table_buf; + int8_t *qscale_table; + + AVBufferRef *motion_val_buf[2]; + int16_t (*motion_val[2])[2]; + + AVBufferRef *mb_type_buf; + uint32_t *mb_type; ///< types and macros are defined in mpegutils.h + + AVBufferRef *mbskip_table_buf; + uint8_t *mbskip_table; + + AVBufferRef *ref_index_buf[2]; + int8_t *ref_index[2]; + + AVBufferRef *mb_var_buf; + uint16_t *mb_var; ///< Table for MB variances + + AVBufferRef *mc_mb_var_buf; + uint16_t *mc_mb_var; ///< Table for motion compensated MB variances + + AVBufferRef *mb_mean_buf; + uint8_t *mb_mean; ///< Table for MB luminance + + AVBufferRef *hwaccel_priv_buf; + void *hwaccel_picture_private; ///< Hardware accelerator private data + + int field_picture; ///< whether or not the picture was encoded in separate fields + + int mb_var_sum; ///< sum of MB variance for current frame + int mc_mb_var_sum; ///< motion compensated MB variance for current frame + + int b_frame_score; /* */ + int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change) + + int reference; + int shared; +} Picture; + +/** + * Allocate a Picture. + * The pixels are allocated/set by calling get_buffer() if shared = 0. + */ +int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me, + ScratchpadContext *sc, int shared, int encoding, + int chroma_x_shift, int chroma_y_shift, int out_format, + int mb_stride, int mb_height, int b8_stride, + ptrdiff_t *linesize, ptrdiff_t *uvlinesize); + +int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me, + ScratchpadContext *sc, int linesize); + +int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src); +void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture); + +void ff_free_picture_tables(Picture *pic); +int ff_update_picture_tables(Picture *dst, Picture *src); + +int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared); + +#endif /* AVCODEC_MPEGPICTURE_H */ -- cgit v1.2.3