Advanced Rendering

class MpvRenderContext:
    """OpenGL render context for advanced rendering scenarios."""
    
    def __init__(self, mpv: 'MPV', api_type: str, **kwargs):
        """
        Initialize render context.

        Parameters:
        - mpv: MPV player instance
        - api_type: Render API type ('opengl')
        - kwargs: API-specific parameters

        For OpenGL API:
        - get_proc_address: Function to retrieve OpenGL function pointers
        - gl_params: MpvOpenGLInitParams object
        """
    
    def render(self, **kwargs) -> int:
        """
        Render current frame to OpenGL context.

        Parameters:
        - kwargs: Render parameters (fbo, viewport, etc.)

        Returns:
        Render result code (0 for success)
        """
    
    def update(self) -> bool:
        """
        Update render context and check for new frames.

        Returns:
        True if new frame is available for rendering
        """
    
    def report_swap(self):
        """Report that frame buffer swap has occurred."""
    
    def free(self):
        """Free render context resources."""

def vf_command(self, label: str, command: str, argument):
    """
    Send command to a video filter.

    Parameters:
    - label: Filter label/name in the filter chain
    - command: Command name to send to the filter
    - argument: Command argument/parameter
    """

def af_command(self, label: str, command: str, argument):
    """
    Send command to an audio filter.

    Parameters:
    - label: Filter label/name in the filter chain
    - command: Command name to send to the filter
    - argument: Command argument/parameter
    """

class MpvOpenGLInitParams:
    """OpenGL initialization parameters."""
    
    def __init__(self, get_proc_address):
        """
        Initialize OpenGL parameters.

        Parameters:
        - get_proc_address: Function pointer to get OpenGL function addresses
        """

class MpvOpenGLFBO:
    """OpenGL framebuffer object parameters."""
    
    def __init__(self, w: int, h: int, fbo: int = 0, internal_format: int = 0):
        """
        Initialize FBO parameters.

        Parameters:
        - w, h: Framebuffer dimensions
        - fbo: Framebuffer object ID (0 for default framebuffer)
        - internal_format: Internal format (0 for auto)
        """

class MpvRenderFrameInfo:
    """Information about rendered frame."""
    
    def as_dict(self) -> dict:
        """
        Get frame information as dictionary.

        Returns:
        Dictionary with frame metadata
        """

class MpvRenderParam:
    """Generic render parameter container."""
    
    def __init__(self, name: str, value=None):
        """
        Initialize render parameter.

        Parameters:
        - name: Parameter name
        - value: Parameter value
        """
    
    # Parameter type constants
    TYPES = {
        'invalid': 0,
        'api_type': 1,
        'opengl_init_params': 2,
        'opengl_fbo': 3,
        'flip_y': 4,
        'depth': 5,
        'icc_profile': 6,
        'ambient_light': 7,
        'x11_display': 8,
        'wl_display': 9,
        'advanced_control': 10,
        'next_frame_info': 11,
        'block_for_target_time': 12,
        'skip_rendering': 13,
        'opengl_drm_params': 14,
        'opengl_drm_draw_surface_size': 15,
        'opengl_drm_params_v2': 16,
        'sw_size': 17,
        'sw_format': 18,
        'sw_stride': 19,
        'sw_pointer': 20
    }

class MpvOpenGLDRMParams:
    """DRM parameters for direct hardware rendering."""

class MpvOpenGLDRMDrawSurfaceSize:
    """DRM draw surface size specification."""

class MpvOpenGLDRMParamsV2:
    """Enhanced DRM parameters with additional features."""
    
    def __init__(self, crtc_id: int, connector_id: int, atomic_request_ptr, fd: int = -1, render_fd: int = -1):
        """
        Initialize DRM parameters.

        Parameters:
        - crtc_id: CRTC (display controller) ID
        - connector_id: Display connector ID  
        - atomic_request_ptr: Atomic mode setting request
        - fd: DRM file descriptor
        - render_fd: Render node file descriptor
        """

import mpv
import OpenGL.GL as gl
from OpenGL.GL import *
import ctypes

# OpenGL context setup (varies by platform/framework)
def setup_opengl_context():
    """Setup OpenGL context - implementation depends on your framework."""
    # This is pseudocode - actual implementation depends on your OpenGL framework
    # (pygame, GLFW, Qt, tkinter, etc.)
    pass

def get_proc_address(name):
    """Get OpenGL function pointer."""
    # Implementation depends on your OpenGL loading library
    # For example, with GLFW:
    # return glfw.get_proc_address(name.decode('utf-8'))
    pass

# Initialize player and render context
player = mpv.MPV(vo='libmpv')  # Use libmpv video output

# Create OpenGL initialization parameters
gl_init_params = mpv.MpvOpenGLInitParams(get_proc_address)

# Create render context
render_ctx = mpv.MpvRenderContext(
    player, 
    'opengl',
    opengl_init_params=gl_init_params
)

# Basic rendering loop
def render_frame():
    """Render mpv frame to current OpenGL context."""
    
    # Check for new frame
    if render_ctx.update():
        # Get viewport dimensions
        viewport = gl.glGetIntegerv(gl.GL_VIEWPORT)
        width, height = viewport[2], viewport[3]
        
        # Create FBO parameters for default framebuffer
        fbo = mpv.MpvOpenGLFBO(width, height)
        
        # Render frame
        result = render_ctx.render(opengl_fbo=fbo)
        
        # Report buffer swap
        render_ctx.report_swap()
        
        return result == 0  # Success
    
    return False

# Usage in main loop
player.play('/path/to/video.mp4')

while True:  # Your main loop
    if render_frame():
        # Frame was rendered
        pass
    
    # Handle other events, swap buffers, etc.
    # This depends on your OpenGL framework

import numpy as np

class OffscreenRenderer:
    def __init__(self, player, width, height):
        self.player = player
        self.width = width
        self.height = height
        
        # Create OpenGL resources
        self.setup_fbo()
        self.setup_render_context()
        
    def setup_fbo(self):
        """Create framebuffer object for offscreen rendering."""
        
        # Generate framebuffer
        self.fbo = gl.glGenFramebuffers(1)
        gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self.fbo)
        
        # Create color texture
        self.color_texture = gl.glGenTextures(1)
        gl.glBindTexture(gl.GL_TEXTURE_2D, self.color_texture)
        gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGBA8, 
                       self.width, self.height, 0, 
                       gl.GL_RGBA, gl.GL_UNSIGNED_BYTE, None)
        gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
        gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
        
        # Attach texture to framebuffer
        gl.glFramebufferTexture2D(gl.GL_FRAMEBUFFER, gl.GL_COLOR_ATTACHMENT0,
                                 gl.GL_TEXTURE_2D, self.color_texture, 0)
        
        # Check framebuffer completeness
        if gl.glCheckFramebufferStatus(gl.GL_FRAMEBUFFER) != gl.GL_FRAMEBUFFER_COMPLETE:
            raise RuntimeError("Framebuffer not complete")
        
        gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, 0)
    
    def setup_render_context(self):
        """Setup mpv render context."""
        gl_init_params = mpv.MpvOpenGLInitParams(get_proc_address)
        
        self.render_ctx = mpv.MpvRenderContext(
            self.player,
            'opengl', 
            opengl_init_params=gl_init_params
        )
    
    def render_to_texture(self):
        """Render current frame to texture."""
        
        if not self.render_ctx.update():
            return False
            
        # Bind our framebuffer
        gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self.fbo)
        gl.glViewport(0, 0, self.width, self.height)
        
        # Clear framebuffer
        gl.glClear(gl.GL_COLOR_BUFFER_BIT)
        
        # Render mpv frame
        fbo_params = mpv.MpvOpenGLFBO(self.width, self.height, self.fbo)
        result = self.render_ctx.render(opengl_fbo=fbo_params)
        
        # Report swap
        self.render_ctx.report_swap()
        
        # Restore default framebuffer
        gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, 0)
        
        return result == 0
    
    def read_pixels(self):
        """Read rendered pixels from texture."""
        
        gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self.fbo)
        
        # Read pixels
        pixels = gl.glReadPixels(0, 0, self.width, self.height, 
                               gl.GL_RGBA, gl.GL_UNSIGNED_BYTE)
        
        gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, 0)
        
        # Convert to numpy array
        pixel_array = np.frombuffer(pixels, dtype=np.uint8)
        pixel_array = pixel_array.reshape((self.height, self.width, 4))
        
        # Flip vertically (OpenGL convention)
        pixel_array = np.flip(pixel_array, axis=0)
        
        return pixel_array
    
    def cleanup(self):
        """Clean up OpenGL resources."""
        gl.glDeleteFramebuffers(1, [self.fbo])
        gl.glDeleteTextures(1, [self.color_texture])
        self.render_ctx.free()

# Usage
offscreen = OffscreenRenderer(player, 1920, 1080)

player.play('/path/to/video.mp4')
player.wait_until_playing()

# Render frames and capture
for i in range(100):  # Capture 100 frames
    if offscreen.render_to_texture():
        pixels = offscreen.read_pixels()
        
        # Save frame as image
        from PIL import Image
        img = Image.fromarray(pixels[:, :, :3])  # Remove alpha channel
        img.save(f'frame_{i:04d}.png')
    
    # Advance to next frame
    player.frame_step()

offscreen.cleanup()

class MultiContextRenderer:
    def __init__(self, player):
        self.player = player
        self.contexts = {}
        
    def add_render_target(self, name, width, height, context_setup_func):
        """Add a new render target with its own context."""
        
        # Setup context-specific OpenGL state
        context_setup_func()
        
        # Create render context for this target
        gl_init_params = mpv.MpvOpenGLInitParams(get_proc_address)
        render_ctx = mpv.MpvRenderContext(
            self.player,
            'opengl',
            opengl_init_params=gl_init_params
        )
        
        self.contexts[name] = {
            'render_ctx': render_ctx,
            'width': width,
            'height': height,
            'setup_func': context_setup_func
        }
    
    def render_to_target(self, target_name, fbo_id=0):
        """Render to specific target."""
        
        if target_name not in self.contexts:
            return False
        
        ctx_info = self.contexts[target_name]
        render_ctx = ctx_info['render_ctx']
        
        # Setup target context
        ctx_info['setup_func']()
        
        if render_ctx.update():
            # Create FBO parameters
            fbo_params = mpv.MpvOpenGLFBO(
                ctx_info['width'], 
                ctx_info['height'], 
                fbo_id
            )
            
            # Render
            result = render_ctx.render(opengl_fbo=fbo_params)
            render_ctx.report_swap()
            
            return result == 0
        
        return False
    
    def cleanup(self):
        """Clean up all render contexts."""
        for ctx_info in self.contexts.values():
            ctx_info['render_ctx'].free()

# Usage with multiple windows/contexts
multi_renderer = MultiContextRenderer(player)

# Add different render targets
def setup_main_window():
    # Setup main window OpenGL context
    pass

def setup_preview_window():
    # Setup preview window OpenGL context  
    pass

multi_renderer.add_render_target('main', 1920, 1080, setup_main_window)
multi_renderer.add_render_target('preview', 320, 240, setup_preview_window)

# Render to different targets
player.play('/path/to/video.mp4')

while True:  # Main loop
    # Render to main window
    multi_renderer.render_to_target('main')
    
    # Render to preview window
    multi_renderer.render_to_target('preview')
    
    # Handle events, etc.

class CustomRenderPipeline:
    def __init__(self, player):
        self.player = player
        self.render_ctx = None
        self.post_process_shaders = []
        
    def setup_pipeline(self):
        """Setup custom rendering pipeline."""
        
        # Create render context
        gl_init_params = mpv.MpvOpenGLInitParams(get_proc_address)
        self.render_ctx = mpv.MpvRenderContext(
            self.player,
            'opengl',
            opengl_init_params=gl_init_params
        )
        
        # Create intermediate framebuffers for post-processing
        self.setup_framebuffers()
        
    def setup_framebuffers(self):
        """Create framebuffers for pipeline stages."""
        
        # Main rendering FBO
        self.main_fbo = gl.glGenFramebuffers(1)
        self.main_texture = gl.glGenTextures(1)
        
        # Post-processing FBOs
        self.post_fbos = []
        self.post_textures = []
        
        for i in range(2):  # Ping-pong buffers
            fbo = gl.glGenFramebuffers(1)
            texture = gl.glGenTextures(1)
            
            gl.glBindTexture(gl.GL_TEXTURE_2D, texture)
            gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGBA8,
                           1920, 1080, 0, gl.GL_RGBA, gl.GL_UNSIGNED_BYTE, None)
            gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
            gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
            
            self.post_fbos.append(fbo)
            self.post_textures.append(texture)
    
    def add_post_process_shader(self, vertex_shader, fragment_shader):
        """Add post-processing shader to pipeline."""
        
        # Compile and link shader program
        program = self.compile_shader_program(vertex_shader, fragment_shader)
        self.post_process_shaders.append(program)
    
    def compile_shader_program(self, vertex_src, fragment_src):
        """Compile OpenGL shader program."""
        
        # Vertex shader
        vertex_shader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
        gl.glShaderSource(vertex_shader, vertex_src)
        gl.glCompileShader(vertex_shader)
        
        # Fragment shader  
        fragment_shader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
        gl.glShaderSource(fragment_shader, fragment_src)
        gl.glCompileShader(fragment_shader)
        
        # Program
        program = gl.glCreateProgram()
        gl.glAttachShader(program, vertex_shader)
        gl.glAttachShader(program, fragment_shader)
        gl.glLinkProgram(program)
        
        # Cleanup individual shaders
        gl.glDeleteShader(vertex_shader)
        gl.glDeleteShader(fragment_shader)
        
        return program
    
    def render_with_pipeline(self):
        """Render frame through custom pipeline."""
        
        if not self.render_ctx.update():
            return False
        
        # Render mpv frame to main FBO
        gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self.main_fbo)
        
        fbo_params = mpv.MpvOpenGLFBO(1920, 1080, self.main_fbo)
        result = self.render_ctx.render(opengl_fbo=fbo_params)
        
        if result != 0:
            return False
        
        # Apply post-processing pipeline
        current_input = self.main_texture
        
        for i, shader in enumerate(self.post_process_shaders):
            # Use ping-pong buffers
            output_idx = i % 2
            output_fbo = self.post_fbos[output_idx]
            output_texture = self.post_textures[output_idx]
            
            # Bind output framebuffer
            gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, output_fbo)
            gl.glViewport(0, 0, 1920, 1080)
            
            # Use shader
            gl.glUseProgram(shader)
            
            # Bind input texture
            gl.glActiveTexture(gl.GL_TEXTURE0)
            gl.glBindTexture(gl.GL_TEXTURE_2D, current_input)
            gl.glUniform1i(gl.glGetUniformLocation(shader, "inputTexture"), 0)
            
            # Render fullscreen quad
            self.render_fullscreen_quad()
            
            current_input = output_texture
        
        # Final output to screen
        gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, 0)
        gl.glViewport(0, 0, 1920, 1080)
        
        # Simple blit of final result
        gl.glUseProgram(0)
        gl.glActiveTexture(gl.GL_TEXTURE0)
        gl.glBindTexture(gl.GL_TEXTURE_2D, current_input)
        gl.glEnable(gl.GL_TEXTURE_2D)
        
        # Render final quad
        self.render_fullscreen_quad()
        
        self.render_ctx.report_swap()
        return True
    
    def render_fullscreen_quad(self):
        """Render a fullscreen quad for post-processing."""
        gl.glBegin(gl.GL_QUADS)
        gl.glTexCoord2f(0, 0); gl.glVertex2f(-1, -1)
        gl.glTexCoord2f(1, 0); gl.glVertex2f(1, -1)
        gl.glTexCoord2f(1, 1); gl.glVertex2f(1, 1)
        gl.glTexCoord2f(0, 1); gl.glVertex2f(-1, 1)
        gl.glEnd()

# Usage
pipeline = CustomRenderPipeline(player)
pipeline.setup_pipeline()

# Add bloom effect shader
bloom_fragment = """
#version 330 core
uniform sampler2D inputTexture;
in vec2 texCoord;
out vec4 fragColor;

void main() {
    vec3 color = texture(inputTexture, texCoord).rgb;
    
    // Simple bloom effect
    float brightness = dot(color, vec3(0.2126, 0.7152, 0.0722));
    if (brightness > 0.8) {
        color *= 1.5;
    }
    
    fragColor = vec4(color, 1.0);
}
"""

bloom_vertex = """
#version 330 core
layout(location = 0) in vec2 position;
out vec2 texCoord;

void main() {
    texCoord = position * 0.5 + 0.5;
    gl_Position = vec4(position, 0.0, 1.0);
}
"""

pipeline.add_post_process_shader(bloom_vertex, bloom_fragment)

# Render with custom pipeline
player.play('/path/to/video.mp4')

while True:  # Main loop
    pipeline.render_with_pipeline()
    # Swap buffers, handle events, etc.