/*
* Vidvox Hap
* Copyright (C) 2015 Vittorio Giovara <vittorio.giovara@gmail.com>
+ * Copyright (C) 2015 Tom Butterworth <bangnoise@gmail.com>
*
* This file is part of FFmpeg.
*
#include "bytestream.h"
#include "texturedsp.h"
+enum HapTextureFormat {
+ HAP_FMT_RGBDXT1 = 0x0B,
+ HAP_FMT_RGBADXT5 = 0x0E,
+ HAP_FMT_YCOCGDXT5 = 0x0F,
+};
+
+enum HapCompressor {
+ HAP_COMP_NONE = 0xA0,
+ HAP_COMP_SNAPPY = 0xB0,
+ HAP_COMP_COMPLEX = 0xC0,
+};
+
+enum HapSectionType {
+ HAP_ST_DECODE_INSTRUCTIONS = 0x01,
+ HAP_ST_COMPRESSOR_TABLE = 0x02,
+ HAP_ST_SIZE_TABLE = 0x03,
+ HAP_ST_OFFSET_TABLE = 0x04,
+};
+
+typedef struct HapChunk {
+ enum HapCompressor compressor;
+ int compressed_offset;
+ size_t compressed_size;
+ int uncompressed_offset;
+ size_t uncompressed_size;
+} HapChunk;
+
typedef struct HapContext {
AVClass *class;
TextureDSPContext dxtc;
GetByteContext gbc;
- PutByteContext pbc;
- int section_type; /* Header type */
+ enum HapTextureFormat opt_tex_fmt; /* Texture type (encoder only) */
+ int opt_chunk_count; /* User-requested chunk count (encoder only) */
+
+ int chunk_count;
+ HapChunk *chunks;
+ int *chunk_results; /* Results from threaded operations */
int tex_rat; /* Compression ratio */
const uint8_t *tex_data; /* Compressed texture */
- uint8_t *tex_buf; /* Uncompressed texture */
+ uint8_t *tex_buf; /* Buffer for compressed texture */
size_t tex_size; /* Size of the compressed texture */
- uint8_t *snappied; /* Buffer interacting with snappy */
size_t max_snappy; /* Maximum compressed size for snappy buffer */
+ int slice_count; /* Number of slices for threaded operations */
+
/* Pointer to the selected compress or decompress function */
int (*tex_fun)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block);
} HapContext;
-enum {
- HAP_FMT_RGBDXT1 = 0x0B,
- HAP_FMT_RGBADXT5 = 0x0E,
- HAP_FMT_YCOCGDXT5 = 0x0F,
-};
+/*
+ * Set the number of chunks in the frame. Returns 0 on success or an error if:
+ * - first_in_frame is 0 and the number of chunks has changed
+ * - any other error occurs
+ */
+int ff_hap_set_chunk_count(HapContext *ctx, int count, int first_in_frame);
-enum {
- HAP_COMP_NONE = 0xA0,
- HAP_COMP_SNAPPY = 0xB0,
- HAP_COMP_COMPLEX = 0xC0,
-};
+/*
+ * Free resources associated with the context
+ */
+av_cold void ff_hap_free_context(HapContext *ctx);
#endif /* AVCODEC_HAP_H */