Function ffio_init_context

libavformat/aviobuf.c:50–97

static int set_buf_size(AVIOContext *s, int buf_size);

void ffio_init_context(FFIOContext *ctx,
                  unsigned char *buffer,
                  int buffer_size,
                  int write_flag,
                  void *opaque,
                  int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
                  int (*write_packet)(void *opaque, const uint8_t *buf, int buf_size),
                  int64_t (*seek)(void *opaque, int64_t offset, int whence))
{
    AVIOContext *const s = &ctx->pub;

    memset(ctx, 0, sizeof(*ctx));

    s->buffer      = buffer;
    ctx->orig_buffer_size =
    s->buffer_size = buffer_size;
    s->buf_ptr     = buffer;
    s->buf_ptr_max = buffer;
    s->opaque      = opaque;
    s->direct      = 0;

    url_resetbuf(s, write_flag ? AVIO_FLAG_WRITE : AVIO_FLAG_READ);

    s->write_packet    = write_packet;
    s->read_packet     = read_packet;
    s->seek            = seek;
    s->pos             = 0;
    s->eof_reached     = 0;
    s->error           = 0;
    s->seekable        = seek ? AVIO_SEEKABLE_NORMAL : 0;
    s->min_packet_size = 0;
    s->max_packet_size = 0;
    s->update_checksum = NULL;
    ctx->short_seek_threshold = SHORT_SEEK_THRESHOLD;

    if (!read_packet && !write_flag) {
        s->pos     = buffer_size;
        s->buf_end = s->buffer + buffer_size;
    }
    s->read_pause = NULL;
    s->read_seek  = NULL;

    s->write_data_type       = NULL;
    s->ignore_boundary_point = 0;
    ctx->current_type        = AVIO_DATA_MARKER_UNKNOWN;
    ctx->last_time           = AV_NOPTS_VALUE;
    ctx->short_seek_get      = NULL;
}

void ffio_init_read_context(FFIOContext *s, const uint8_t *buffer, int buffer_size)
{