ref: 91b0af2fa2572dfbb22700183c70eefa61136c33
dir: /examples/dav1dplay.c/
/*
* Copyright © 2019, VideoLAN and dav1d authors
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "vcs_version.h"
#include <getopt.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <SDL.h>
#include "common/attributes.h"
#include "dav1d/dav1d.h"
#include "tools/input/input.h"
/**
* Settings structure
* Hold all settings available for the player,
* this is usually filled by parsing arguments
* from the console.
*/
typedef struct {
const char *inputfile;
} Dav1dPlaySettings;
#define WINDOW_WIDTH 910
#define WINDOW_HEIGHT 512
#define DAV1D_EVENT_NEW_FRAME 1
#define DAV1D_EVENT_DEC_QUIT 2
/*
* Fifo helper functions
*/
typedef struct dp_fifo
{
SDL_mutex *lock;
SDL_cond *cond_change;
size_t capacity;
size_t count;
void **entries;
} Dav1dPlayPtrFifo;
static void dp_fifo_destroy(Dav1dPlayPtrFifo *fifo)
{
assert(fifo->count == 0);
SDL_DestroyMutex(fifo->lock);
SDL_DestroyCond(fifo->cond_change);
free(fifo->entries);
free(fifo);
}
static Dav1dPlayPtrFifo *dp_fifo_create(size_t capacity)
{
Dav1dPlayPtrFifo *fifo;
assert(capacity > 0);
if (capacity <= 0)
return NULL;
fifo = malloc(sizeof(*fifo));
if (fifo == NULL)
return NULL;
fifo->capacity = capacity;
fifo->count = 0;
fifo->lock = SDL_CreateMutex();
if (fifo->lock == NULL) {
free(fifo);
return NULL;
}
fifo->cond_change = SDL_CreateCond();
if (fifo->cond_change == NULL) {
SDL_DestroyMutex(fifo->lock);
free(fifo);
return NULL;
}
fifo->entries = calloc(capacity, sizeof(void*));
if (fifo->entries == NULL) {
dp_fifo_destroy(fifo);
return NULL;
}
return fifo;
}
static void dp_fifo_push(Dav1dPlayPtrFifo *fifo, void *element)
{
SDL_LockMutex(fifo->lock);
while (fifo->count == fifo->capacity)
SDL_CondWait(fifo->cond_change, fifo->lock);
fifo->entries[fifo->count++] = element;
if (fifo->count == 1)
SDL_CondSignal(fifo->cond_change);
SDL_UnlockMutex(fifo->lock);
}
static void *dp_fifo_array_shift(void **arr, size_t len)
{
void *shifted_element = arr[0];
for (size_t i = 1; i < len; ++i)
arr[i-1] = arr[i];
return shifted_element;
}
static void *dp_fifo_shift(Dav1dPlayPtrFifo *fifo)
{
SDL_LockMutex(fifo->lock);
while (fifo->count == 0)
SDL_CondWait(fifo->cond_change, fifo->lock);
void *res = dp_fifo_array_shift(fifo->entries, fifo->count--);
if (fifo->count == fifo->capacity - 1)
SDL_CondSignal(fifo->cond_change);
SDL_UnlockMutex(fifo->lock);
return res;
}
/**
* Renderer info
*/
typedef struct rdr_info
{
// Cookie passed to the renderer implementation callbacks
void *cookie;
// Callback to create the renderer
void* (*create_renderer)(void *data);
// Callback to destroy the renderer
void (*destroy_renderer)(void *cookie);
// Callback to the render function that renders a prevously sent frame
void (*render)(void *cookie);
// Callback to the send frame function
int (*update_frame)(void *cookie, Dav1dPicture *dav1d_pic);
} Dav1dPlayRenderInfo;
#ifdef HAVE_PLACEBO_VULKAN
#include <libplacebo/renderer.h>
#include <libplacebo/utils/upload.h>
#include <libplacebo/vulkan.h>
#include <SDL_vulkan.h>
/**
* Renderer context for libplacebo
*/
typedef struct renderer_priv_ctx
{
// Placebo context
struct pl_context *ctx;
// Placebo renderer
struct pl_renderer *renderer;
// Placebo Vulkan handle
const struct pl_vulkan *vk;
// Placebo Vulkan instance
const struct pl_vk_inst *vk_inst;
// Vulkan surface
VkSurfaceKHR surf;
// Placebo swapchain
const struct pl_swapchain *swapchain;
// Lock protecting access to the texture
SDL_mutex *lock;
// Planes to render
struct pl_plane y_plane;
struct pl_plane u_plane;
struct pl_plane v_plane;
// Textures to render
const struct pl_tex *y_tex;
const struct pl_tex *u_tex;
const struct pl_tex *v_tex;
} Dav1dPlayRendererPrivateContext;
static void *placebo_renderer_create(void *data)
{
// Alloc
Dav1dPlayRendererPrivateContext *rd_priv_ctx = malloc(sizeof(Dav1dPlayRendererPrivateContext));
if (rd_priv_ctx == NULL) {
return NULL;
}
// Init libplacebo
rd_priv_ctx->ctx = pl_context_create(PL_API_VER, &(struct pl_context_params) {
.log_cb = pl_log_color,
#ifndef NDEBUG
.log_level = PL_LOG_DEBUG,
#else
.log_level = PL_LOG_WARN,
#endif
});
if (rd_priv_ctx->ctx == NULL) {
free(rd_priv_ctx);
return NULL;
}
// Create Mutex
rd_priv_ctx->lock = SDL_CreateMutex();
if (rd_priv_ctx->lock == NULL) {
fprintf(stderr, "SDL_CreateMutex failed: %s\n", SDL_GetError());
pl_context_destroy(&(rd_priv_ctx->ctx));
free(rd_priv_ctx);
return NULL;
}
// Init Vulkan
struct pl_vk_inst_params iparams = pl_vk_inst_default_params;
SDL_Window *sdlwin = data;
unsigned num = 0;
if (!SDL_Vulkan_GetInstanceExtensions(sdlwin, &num, NULL)) {
fprintf(stderr, "Failed enumerating Vulkan extensions: %s\n", SDL_GetError());
exit(1);
}
iparams.extensions = malloc(num * sizeof(const char *));
iparams.num_extensions = num;
assert(iparams.extensions);
SDL_bool ok = SDL_Vulkan_GetInstanceExtensions(sdlwin, &num, iparams.extensions);
if (!ok) {
fprintf(stderr, "Failed getting Vk instance extensions\n");
exit(1);
}
if (num > 0) {
printf("Requesting %d additional Vulkan extensions:\n", num);
for (unsigned i = 0; i < num; i++)
printf(" %s\n", iparams.extensions[i]);
}
rd_priv_ctx->vk_inst = pl_vk_inst_create(rd_priv_ctx->ctx, &iparams);
if (!rd_priv_ctx->vk_inst) {
fprintf(stderr, "Failed creating Vulkan instance!\n");
exit(1);
}
free(iparams.extensions);
if (!SDL_Vulkan_CreateSurface(sdlwin, rd_priv_ctx->vk_inst->instance, &rd_priv_ctx->surf)) {
fprintf(stderr, "Failed creating vulkan surface: %s\n", SDL_GetError());
exit(1);
}
struct pl_vulkan_params params = pl_vulkan_default_params;
params.instance = rd_priv_ctx->vk_inst->instance;
params.surface = rd_priv_ctx->surf;
params.allow_software = true;
rd_priv_ctx->vk = pl_vulkan_create(rd_priv_ctx->ctx, ¶ms);
if (!rd_priv_ctx->vk) {
fprintf(stderr, "Failed creating vulkan device!\n");
exit(2);
}
// Create swapchain
rd_priv_ctx->swapchain = pl_vulkan_create_swapchain(rd_priv_ctx->vk,
&(struct pl_vulkan_swapchain_params) {
.surface = rd_priv_ctx->surf,
.present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR,
});
if (!rd_priv_ctx->swapchain) {
fprintf(stderr, "Failed creating vulkan swapchain!\n");
exit(2);
}
int w = WINDOW_WIDTH, h = WINDOW_HEIGHT;
if (!pl_swapchain_resize(rd_priv_ctx->swapchain, &w, &h)) {
fprintf(stderr, "Failed resizing vulkan swapchain!\n");
exit(2);
}
if (w != WINDOW_WIDTH || h != WINDOW_HEIGHT)
printf("Note: window dimensions differ (got %dx%d)\n", w, h);
rd_priv_ctx->y_tex = NULL;
rd_priv_ctx->u_tex = NULL;
rd_priv_ctx->v_tex = NULL;
rd_priv_ctx->renderer = NULL;
return rd_priv_ctx;
}
static void placebo_renderer_destroy(void *cookie)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
pl_renderer_destroy(&(rd_priv_ctx->renderer));
pl_tex_destroy(rd_priv_ctx->vk->gpu, &(rd_priv_ctx->y_tex));
pl_tex_destroy(rd_priv_ctx->vk->gpu, &(rd_priv_ctx->u_tex));
pl_tex_destroy(rd_priv_ctx->vk->gpu, &(rd_priv_ctx->v_tex));
pl_swapchain_destroy(&(rd_priv_ctx->swapchain));
pl_vulkan_destroy(&(rd_priv_ctx->vk));
vkDestroySurfaceKHR(rd_priv_ctx->vk_inst->instance, rd_priv_ctx->surf, NULL);
pl_vk_inst_destroy(&(rd_priv_ctx->vk_inst));
pl_context_destroy(&(rd_priv_ctx->ctx));
}
static void placebo_render(void *cookie)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
SDL_LockMutex(rd_priv_ctx->lock);
if (rd_priv_ctx->y_tex == NULL) {
SDL_UnlockMutex(rd_priv_ctx->lock);
return;
}
// Prepare rendering
if (rd_priv_ctx->renderer == NULL) {
rd_priv_ctx->renderer = pl_renderer_create(rd_priv_ctx->ctx, rd_priv_ctx->vk->gpu);
}
struct pl_swapchain_frame frame;
bool ok = pl_swapchain_start_frame(rd_priv_ctx->swapchain, &frame);
if (!ok) {
SDL_UnlockMutex(rd_priv_ctx->lock);
return;
}
const struct pl_tex *img = rd_priv_ctx->y_plane.texture;
struct pl_image image = {
.num_planes = 3,
.planes = { rd_priv_ctx->y_plane, rd_priv_ctx->u_plane, rd_priv_ctx->v_plane },
.repr = pl_color_repr_hdtv,
.color = pl_color_space_unknown,
.width = img->params.w,
.height = img->params.h,
};
struct pl_render_params render_params = pl_render_default_params;
//render_params.upscaler = &pl_filter_ewa_lanczos;
struct pl_render_target target;
pl_render_target_from_swapchain(&target, &frame);
target.profile = (struct pl_icc_profile) {
.data = NULL,
.len = 0,
};
if (!pl_render_image(rd_priv_ctx->renderer, &image, &target, &render_params)) {
fprintf(stderr, "Failed rendering frame!\n");
SDL_UnlockMutex(rd_priv_ctx->lock);
return;
}
ok = pl_swapchain_submit_frame(rd_priv_ctx->swapchain);
if (!ok) {
fprintf(stderr, "Failed submitting frame!\n");
SDL_UnlockMutex(rd_priv_ctx->lock);
return;
}
pl_swapchain_swap_buffers(rd_priv_ctx->swapchain);
SDL_UnlockMutex(rd_priv_ctx->lock);
}
static int placebo_upload_planes(void *cookie, Dav1dPicture *dav1d_pic)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
SDL_LockMutex(rd_priv_ctx->lock);
if (dav1d_pic == NULL) {
SDL_UnlockMutex(rd_priv_ctx->lock);
return 0;
}
int width = dav1d_pic->p.w;
int height = dav1d_pic->p.h;
enum Dav1dPixelLayout dav1d_layout = dav1d_pic->p.layout;
if (DAV1D_PIXEL_LAYOUT_I420 != dav1d_layout || dav1d_pic->p.bpc != 8) {
fprintf(stderr, "Unsupported pixel format, only 8bit 420 supported so far.\n");
exit(50);
}
struct pl_plane_data data_y = {
.type = PL_FMT_UNORM,
.width = width,
.height = height,
.pixel_stride = 1,
.row_stride = dav1d_pic->stride[0],
.pixels = dav1d_pic->data[0],
.component_size = {8},
.component_map = {0},
};
struct pl_plane_data data_u = {
.type = PL_FMT_UNORM,
.width = width/2,
.height = height/2,
.pixel_stride = 1,
.row_stride = dav1d_pic->stride[1],
.pixels = dav1d_pic->data[1],
.component_size = {8},
.component_map = {1},
};
struct pl_plane_data data_v = {
.type = PL_FMT_UNORM,
.width = width/2,
.height = height/2,
.pixel_stride = 1,
.row_stride = dav1d_pic->stride[1],
.pixels = dav1d_pic->data[2],
.component_size = {8},
.component_map = {2},
};
bool ok = true;
ok &= pl_upload_plane(rd_priv_ctx->vk->gpu, &(rd_priv_ctx->y_plane), &(rd_priv_ctx->y_tex), &data_y);
ok &= pl_upload_plane(rd_priv_ctx->vk->gpu, &(rd_priv_ctx->u_plane), &(rd_priv_ctx->u_tex), &data_u);
ok &= pl_upload_plane(rd_priv_ctx->vk->gpu, &(rd_priv_ctx->v_plane), &(rd_priv_ctx->v_tex), &data_v);
pl_chroma_location_offset(PL_CHROMA_LEFT, &rd_priv_ctx->u_plane.shift_x, &rd_priv_ctx->u_plane.shift_y);
pl_chroma_location_offset(PL_CHROMA_LEFT, &rd_priv_ctx->v_plane.shift_x, &rd_priv_ctx->v_plane.shift_y);
if (!ok) {
fprintf(stderr, "Failed uploading planes!\n");
}
SDL_UnlockMutex(rd_priv_ctx->lock);
return !ok;
}
static const Dav1dPlayRenderInfo renderer_info = {
.create_renderer = placebo_renderer_create,
.destroy_renderer = placebo_renderer_destroy,
.render = placebo_render,
.update_frame = placebo_upload_planes
};
#else
/**
* Renderer context for SDL
*/
typedef struct renderer_priv_ctx
{
// SDL renderer
SDL_Renderer *renderer;
// Lock protecting access to the texture
SDL_mutex *lock;
// Texture to render
SDL_Texture *tex;
} Dav1dPlayRendererPrivateContext;
static void *sdl_renderer_create(void *data)
{
SDL_Window *win = data;
// Alloc
Dav1dPlayRendererPrivateContext *rd_priv_ctx = malloc(sizeof(Dav1dPlayRendererPrivateContext));
if (rd_priv_ctx == NULL) {
return NULL;
}
// Create renderer
rd_priv_ctx->renderer = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED);
// Set scale quality
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
// Create Mutex
rd_priv_ctx->lock = SDL_CreateMutex();
if (rd_priv_ctx->lock == NULL) {
fprintf(stderr, "SDL_CreateMutex failed: %s\n", SDL_GetError());
free(rd_priv_ctx);
return NULL;
}
rd_priv_ctx->tex = NULL;
return rd_priv_ctx;
}
static void sdl_renderer_destroy(void *cookie)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
SDL_DestroyRenderer(rd_priv_ctx->renderer);
SDL_DestroyMutex(rd_priv_ctx->lock);
free(rd_priv_ctx);
}
static void sdl_render(void *cookie)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
SDL_LockMutex(rd_priv_ctx->lock);
if (rd_priv_ctx->tex == NULL) {
SDL_UnlockMutex(rd_priv_ctx->lock);
return;
}
// Display the frame
SDL_RenderClear(rd_priv_ctx->renderer);
SDL_RenderCopy(rd_priv_ctx->renderer, rd_priv_ctx->tex, NULL, NULL);
SDL_RenderPresent(rd_priv_ctx->renderer);
SDL_UnlockMutex(rd_priv_ctx->lock);
}
static int sdl_update_texture(void *cookie, Dav1dPicture *dav1d_pic)
{
Dav1dPlayRendererPrivateContext *rd_priv_ctx = cookie;
assert(rd_priv_ctx != NULL);
SDL_LockMutex(rd_priv_ctx->lock);
if (dav1d_pic == NULL) {
rd_priv_ctx->tex = NULL;
SDL_UnlockMutex(rd_priv_ctx->lock);
return 0;
}
int width = dav1d_pic->p.w;
int height = dav1d_pic->p.h;
int tex_w = width;
int tex_h = height;
enum Dav1dPixelLayout dav1d_layout = dav1d_pic->p.layout;
if (DAV1D_PIXEL_LAYOUT_I420 != dav1d_layout || dav1d_pic->p.bpc != 8) {
fprintf(stderr, "Unsupported pixel format, only 8bit 420 supported so far.\n");
exit(50);
}
SDL_Texture *texture = rd_priv_ctx->tex;
if (texture != NULL) {
SDL_QueryTexture(texture, NULL, NULL, &tex_w, &tex_h);
if (tex_w != width || tex_h != height) {
SDL_DestroyTexture(texture);
texture = NULL;
}
}
if (texture == NULL) {
texture = SDL_CreateTexture(rd_priv_ctx->renderer, SDL_PIXELFORMAT_IYUV,
SDL_TEXTUREACCESS_STREAMING, width, height);
}
SDL_UpdateYUVTexture(texture, NULL,
dav1d_pic->data[0], (int)dav1d_pic->stride[0], // Y
dav1d_pic->data[1], (int)dav1d_pic->stride[1], // U
dav1d_pic->data[2], (int)dav1d_pic->stride[1] // V
);
rd_priv_ctx->tex = texture;
SDL_UnlockMutex(rd_priv_ctx->lock);
return 0;
}
static const Dav1dPlayRenderInfo renderer_info = {
.create_renderer = sdl_renderer_create,
.destroy_renderer = sdl_renderer_destroy,
.render = sdl_render,
.update_frame = sdl_update_texture
};
#endif
/**
* Render context structure
* This structure contains informations necessary
* to be shared between the decoder and the renderer
* threads.
*/
typedef struct render_context
{
Dav1dPlaySettings settings;
Dav1dSettings lib_settings;
// Renderer callbacks
Dav1dPlayRenderInfo *renderer_info;
// Renderer private data (passed to callbacks)
void *rd_priv;
// Lock to protect access to the context structure
SDL_mutex *lock;
// Timestamp of previous decoded frame
int64_t last_pts;
// Timestamp of current decoded frame
int64_t current_pts;
// Ticks when last frame was received
uint32_t last_ticks;
// PTS time base
double timebase;
// Fifo
Dav1dPlayPtrFifo *fifo;
// Custom SDL2 event type
uint32_t renderer_event_type;
// Indicates if termination of the decoder thread was requested
uint8_t dec_should_terminate;
} Dav1dPlayRenderContext;
static void dp_settings_print_usage(const char *const app,
const char *const reason, ...)
{
if (reason) {
va_list args;
va_start(args, reason);
vfprintf(stderr, reason, args);
va_end(args);
fprintf(stderr, "\n\n");
}
fprintf(stderr, "Usage: %s [options]\n\n", app);
fprintf(stderr, "Supported options:\n"
" --input/-i $file: input file\n"
" --framethreads $num: number of frame threads (default: 1)\n"
" --tilethreads $num: number of tile threads (default: 1)\n"
" --version/-v: print version and exit\n");
exit(1);
}
static unsigned parse_unsigned(const char *const optarg, const int option,
const char *const app)
{
char *end;
const unsigned res = (unsigned) strtoul(optarg, &end, 0);
if (*end || end == optarg)
dp_settings_print_usage(app, "Invalid argument \"%s\" for option %s; should be an integer",
optarg, option);
return res;
}
static void dp_rd_ctx_parse_args(Dav1dPlayRenderContext *rd_ctx,
const int argc, char *const *const argv)
{
int o;
Dav1dPlaySettings *settings = &rd_ctx->settings;
Dav1dSettings *lib_settings = &rd_ctx->lib_settings;
// Short options
static const char short_opts[] = "i:v";
enum {
ARG_FRAME_THREADS = 256,
ARG_TILE_THREADS,
};
// Long options
static const struct option long_opts[] = {
{ "input", 1, NULL, 'i' },
{ "version", 0, NULL, 'v' },
{ "framethreads", 1, NULL, ARG_FRAME_THREADS },
{ "tilethreads", 1, NULL, ARG_TILE_THREADS },
{ NULL, 0, NULL, 0 },
};
while ((o = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
switch (o) {
case 'i':
settings->inputfile = optarg;
break;
case 'v':
fprintf(stderr, "%s\n", dav1d_version());
exit(0);
case ARG_FRAME_THREADS:
lib_settings->n_frame_threads =
parse_unsigned(optarg, ARG_FRAME_THREADS, argv[0]);
break;
case ARG_TILE_THREADS:
lib_settings->n_tile_threads =
parse_unsigned(optarg, ARG_TILE_THREADS, argv[0]);
break;
default:
dp_settings_print_usage(argv[0], NULL);
}
}
if (optind < argc)
dp_settings_print_usage(argv[0],
"Extra/unused arguments found, e.g. '%s'\n", argv[optind]);
if (!settings->inputfile)
dp_settings_print_usage(argv[0], "Input file (-i/--input) is required");
}
/**
* Destroy a Dav1dPlayRenderContext
*/
static void dp_rd_ctx_destroy(Dav1dPlayRenderContext *rd_ctx)
{
assert(rd_ctx != NULL);
renderer_info.destroy_renderer(rd_ctx->rd_priv);
dp_fifo_destroy(rd_ctx->fifo);
SDL_DestroyMutex(rd_ctx->lock);
free(rd_ctx);
}
/**
* Create a Dav1dPlayRenderContext
*
* \note The Dav1dPlayRenderContext must be destroyed
* again by using dp_rd_ctx_destroy.
*/
static Dav1dPlayRenderContext *dp_rd_ctx_create(void *rd_data)
{
Dav1dPlayRenderContext *rd_ctx;
// Alloc
rd_ctx = malloc(sizeof(Dav1dPlayRenderContext));
if (rd_ctx == NULL) {
return NULL;
}
// Register a custom event to notify our SDL main thread
// about new frames
rd_ctx->renderer_event_type = SDL_RegisterEvents(1);
if (rd_ctx->renderer_event_type == UINT32_MAX) {
fprintf(stderr, "Failure to create custom SDL event type!\n");
free(rd_ctx);
return NULL;
}
rd_ctx->fifo = dp_fifo_create(5);
if (rd_ctx->fifo == NULL) {
fprintf(stderr, "Failed to create FIFO for output pictures!\n");
free(rd_ctx);
return NULL;
}
rd_ctx->lock = SDL_CreateMutex();
if (rd_ctx->lock == NULL) {
fprintf(stderr, "SDL_CreateMutex failed: %s\n", SDL_GetError());
dp_fifo_destroy(rd_ctx->fifo);
free(rd_ctx);
return NULL;
}
rd_ctx->rd_priv = renderer_info.create_renderer(rd_data);
if (rd_ctx->rd_priv == NULL) {
SDL_DestroyMutex(rd_ctx->lock);
dp_fifo_destroy(rd_ctx->fifo);
free(rd_ctx);
return NULL;
}
dav1d_default_settings(&rd_ctx->lib_settings);
memset(&rd_ctx->settings, 0, sizeof(rd_ctx->settings));
rd_ctx->last_pts = 0;
rd_ctx->last_ticks = 0;
rd_ctx->current_pts = 0;
rd_ctx->timebase = 0;
rd_ctx->dec_should_terminate = 0;
return rd_ctx;
}
/**
* Notify about new available frame
*/
static void dp_rd_ctx_post_event(Dav1dPlayRenderContext *rd_ctx, uint32_t code)
{
SDL_Event event;
SDL_zero(event);
event.type = rd_ctx->renderer_event_type;
event.user.code = code;
SDL_PushEvent(&event);
}
/**
* Update the decoder context with a new dav1d picture
*
* Once the decoder decoded a new picture, this call can be used
* to update the internal texture of the render context with the
* new picture.
*/
static void dp_rd_ctx_update_with_dav1d_picture(Dav1dPlayRenderContext *rd_ctx,
Dav1dPicture *dav1d_pic)
{
renderer_info.update_frame(rd_ctx->rd_priv, dav1d_pic);
rd_ctx->current_pts = dav1d_pic->m.timestamp;
}
/**
* Terminate decoder thread (async)
*/
static void dp_rd_ctx_request_shutdown(Dav1dPlayRenderContext *rd_ctx)
{
SDL_LockMutex(rd_ctx->lock);
rd_ctx->dec_should_terminate = 1;
SDL_UnlockMutex(rd_ctx->lock);
}
/**
* Query state of decoder shutdown request
*/
static int dp_rd_ctx_should_terminate(Dav1dPlayRenderContext *rd_ctx)
{
int ret = 0;
SDL_LockMutex(rd_ctx->lock);
ret = rd_ctx->dec_should_terminate;
SDL_UnlockMutex(rd_ctx->lock);
return ret;
}
/**
* Render the currently available texture
*
* Renders the currently available texture, if any.
*/
static void dp_rd_ctx_render(Dav1dPlayRenderContext *rd_ctx)
{
// Calculate time since last frame was received
uint32_t ticks_now = SDL_GetTicks();
uint32_t ticks_diff = (rd_ctx->last_ticks != 0) ? ticks_now - rd_ctx->last_ticks : 0;
// Calculate when to display the frame
int64_t pts_diff = rd_ctx->current_pts - rd_ctx->last_pts;
int32_t wait_time = (pts_diff * rd_ctx->timebase) * 1000 - ticks_diff;
rd_ctx->last_pts = rd_ctx->current_pts;
// This way of timing the playback is not accurate, as there is no guarantee
// that SDL_Delay will wait for exactly the requested amount of time so in a
// accurate player this would need to be done in a better way.
if (wait_time >= 0) {
SDL_Delay(wait_time);
} else if (wait_time < -10) { // Do not warn for minor time drifts
fprintf(stderr, "Frame displayed %f seconds too late\n", wait_time/(float)1000);
}
renderer_info.render(rd_ctx->rd_priv);
rd_ctx->last_ticks = SDL_GetTicks();
}
/* Decoder thread "main" function */
static int decoder_thread_main(void *cookie)
{
Dav1dPlayRenderContext *rd_ctx = cookie;
Dav1dPicture *p;
Dav1dContext *c = NULL;
Dav1dData data;
DemuxerContext *in_ctx = NULL;
int res = 0;
unsigned n_out = 0, total, timebase[2], fps[2];
// Store current ticks for stats calculation
uint32_t decoder_start = SDL_GetTicks();
Dav1dPlaySettings settings = rd_ctx->settings;
// Init dav1d tools demuxers
init_demuxers();
if ((res = input_open(&in_ctx, "ivf",
settings.inputfile,
fps, &total, timebase)) < 0)
{
fprintf(stderr, "Failed to open demuxer\n");
res = 1;
goto cleanup;
}
double timebase_d = timebase[1]/(double)timebase[0];
rd_ctx->timebase = timebase_d;
if ((res = dav1d_open(&c, &rd_ctx->lib_settings))) {
fprintf(stderr, "Failed opening dav1d decoder\n");
res = 1;
goto cleanup;
}
if ((res = input_read(in_ctx, &data)) < 0) {
fprintf(stderr, "Failed demuxing input\n");
res = 1;
goto cleanup;
}
// Decoder loop
do {
if (dp_rd_ctx_should_terminate(rd_ctx))
break;
// Send data packets we got from the demuxer to dav1d
if ((res = dav1d_send_data(c, &data)) < 0) {
// On EAGAIN, dav1d can not consume more data and
// dav1d_get_picture needs to be called first, which
// will happen below, so just keep going in that case
// and do not error out.
if (res != DAV1D_ERR(EAGAIN)) {
dav1d_data_unref(&data);
fprintf(stderr, "Error decoding frame: %s\n",
strerror(-res));
break;
}
}
p = calloc(1, sizeof(*p));
// Try to get a decoded frame
if ((res = dav1d_get_picture(c, p)) < 0) {
// In all error cases, even EAGAIN, p needs to be freed as
// it is never added to the queue and would leak.
free(p);
// On EAGAIN, it means dav1d has not enough data to decode
// therefore this is not a decoding error but just means
// we need to feed it more data, which happens in the next
// run of this decoder loop.
if (res != DAV1D_ERR(EAGAIN)) {
fprintf(stderr, "Error decoding frame: %s\n",
strerror(-res));
break;
}
res = 0;
} else {
// Queue frame
dp_fifo_push(rd_ctx->fifo, p);
dp_rd_ctx_post_event(rd_ctx, DAV1D_EVENT_NEW_FRAME);
n_out++;
}
} while ((data.sz > 0 || !input_read(in_ctx, &data)));
// Release remaining data
if (data.sz > 0) dav1d_data_unref(&data);
// Do not drain in case an error occured and caused us to leave the
// decoding loop early.
if (res < 0)
goto cleanup;
// Drain decoder
// When there is no more data to feed to the decoder, for example
// because the file ended, we still need to request pictures, as
// even though we do not have more data, there can be frames decoded
// from data we sent before. So we need to call dav1d_get_picture until
// we get an EAGAIN error.
do {
if (dp_rd_ctx_should_terminate(rd_ctx))
break;
p = calloc(1, sizeof(*p));
res = dav1d_get_picture(c, p);
if (res < 0) {
free(p);
if (res != DAV1D_ERR(EAGAIN)) {
fprintf(stderr, "Error decoding frame: %s\n",
strerror(-res));
break;
}
} else {
// Queue frame
dp_fifo_push(rd_ctx->fifo, p);
dp_rd_ctx_post_event(rd_ctx, DAV1D_EVENT_NEW_FRAME);
n_out++;
}
} while (res != DAV1D_ERR(EAGAIN));
// Print stats
uint32_t decoding_time_ms = SDL_GetTicks() - decoder_start;
printf("Decoded %u frames in %d seconds, avg %.02f fps\n",
n_out, decoding_time_ms/1000, n_out / (decoding_time_ms / 1000.0));
cleanup:
dp_rd_ctx_post_event(rd_ctx, DAV1D_EVENT_DEC_QUIT);
if (in_ctx)
input_close(in_ctx);
if (c)
dav1d_close(&c);
return (res != DAV1D_ERR(EAGAIN) && res < 0);
}
int main(int argc, char **argv)
{
SDL_Thread *decoder_thread;
SDL_Window *win = NULL;
// Check for version mismatch between library and tool
const char *version = dav1d_version();
if (strcmp(version, DAV1D_VERSION)) {
fprintf(stderr, "Version mismatch (library: %s, executable: %s)\n",
version, DAV1D_VERSION);
return 1;
}
// Init SDL2 library
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) < 0)
return 10;
// Create Window and Renderer
int window_flags = SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI;
#ifdef HAVE_PLACEBO_VULKAN
window_flags |= SDL_WINDOW_VULKAN;
#endif
win = SDL_CreateWindow("Dav1dPlay", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
WINDOW_WIDTH, WINDOW_HEIGHT, window_flags);
SDL_SetWindowResizable(win, SDL_TRUE);
// Create render context
Dav1dPlayRenderContext *rd_ctx = dp_rd_ctx_create(win);
if (rd_ctx == NULL) {
fprintf(stderr, "Failed creating render context\n");
return 5;
}
// Parse and validate arguments
dp_rd_ctx_parse_args(rd_ctx, argc, argv);
// Start decoder thread
decoder_thread = SDL_CreateThread(decoder_thread_main, "Decoder thread", rd_ctx);
// Main loop
while (1) {
SDL_Event e;
if (SDL_WaitEvent(&e)) {
if (e.type == SDL_QUIT) {
dp_rd_ctx_request_shutdown(rd_ctx);
} else if (e.type == rd_ctx->renderer_event_type) {
if (e.user.code == DAV1D_EVENT_NEW_FRAME) {
// Dequeue frame and update the render context with it
Dav1dPicture *p = dp_fifo_shift(rd_ctx->fifo);
// Do not update textures during termination
if (!dp_rd_ctx_should_terminate(rd_ctx))
dp_rd_ctx_update_with_dav1d_picture(rd_ctx, p);
dav1d_picture_unref(p);
free(p);
} else if (e.user.code == DAV1D_EVENT_DEC_QUIT) {
break;
}
}
}
// Do not render during termination
if (!dp_rd_ctx_should_terminate(rd_ctx))
dp_rd_ctx_render(rd_ctx);
}
int decoder_ret = 0;
SDL_WaitThread(decoder_thread, &decoder_ret);
dp_rd_ctx_destroy(rd_ctx);
SDL_DestroyWindow(win);
return decoder_ret;
}