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drm_mmal.c
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drm_mmal.c
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/*
Copyright (c) 2017 Raspberry Pi (Trading) Ltd
Based on example_basic_2.c from the Userland repo (interface/mmal/test/examples)
Amended to use GEM to allocate the video buffers from CMA, export as dmabufs,
import the dmabufs via vcsm, and then use them with MMAL.
Output frames are then presented to libdrm for display.
Plays an H264 elementary stream with no frame scheduling.
Copyright (c) 2012, Broadcom Europe Ltd
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* 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.
* Neither the name of the copyright holder nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
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 HOLDER 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.
*/
/* Portions of the code lifted from glxgears, under: */
/*
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/* Portions of the code lifted from piglit, under: */
/*
* Copyright (c) The Piglit project 2007
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <errno.h>
#include <fcntl.h>
#include <math.h>
#include <poll.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <drm.h>
#include <drm_mode.h>
#include <drm_fourcc.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xlib-xcb.h>
#include <epoxy/gl.h>
#include <epoxy/egl.h>
#include <xcb/xcb.h>
#include <xcb/dri3.h>
#include <interface/vcsm/user-vcsm.h>
#include "bcm_host.h"
#include "interface/mmal/mmal.h"
#include "interface/mmal/util/mmal_default_components.h"
#include "interface/mmal/util/mmal_util_params.h"
#include "interface/mmal/util/mmal_util.h"
#include "interface/mmal/util/mmal_connection.h"
#include "interface/mmal/mmal_queue.h"
#include "interface/vcos/vcos.h"
#include <stdio.h>
//Tested working:
//MMAL_ENCODING_I420 (YU12)
//MMAL_ENCODING_YV12
//MMAL_ENCODING_NV12
//MMAL_ENCODING_I422 (YU16)
//MMAL_ENCODING_BGRA
//MMAL_ENCODING_RGBA
//MMAL_ENCODING_RGB16 (RGB565)
//
//Valid to the ISP, but not DRM:
//MMAL_ENCODING_NV21 (NV12 with cb/cr swapped)
//MMAL_ENCODING_RGB24
//MMAL_ENCODING_BGR24
//Patches sorted for vc4_plane.c for each of these, and then they work.
//
#define ENCODING_FOR_DRM MMAL_ENCODING_YUVUV128
#define DRM_MODULE "vc4"
#define MAX_BUFFERS 3
static inline int warn(const char *file, int line, const char *fmt, ...)
{
int errsv = errno;
va_list va;
va_start(va, fmt);
fprintf(stderr, "WARN(%s:%d): ", file, line);
vfprintf(stderr, fmt, va);
va_end(va);
errno = errsv;
return 1;
}
#define CHECK_CONDITION(cond, ...) \
do { \
if (cond) { \
int errsv = errno; \
fprintf(stderr, "ERROR(%s:%d) : ", \
__FILE__, __LINE__); \
errno = errsv; \
fprintf(stderr, __VA_ARGS__); \
abort(); \
} \
} while(0)
#define WARN_ON(cond, ...) \
((cond) ? warn(__FILE__, __LINE__, __VA_ARGS__) : 0)
#define ERRSTR strerror(errno)
#define CHECK_STATUS(status, ...) WARN_ON(status != MMAL_SUCCESS, __VA_ARGS__); \
if (status != MMAL_SUCCESS) goto error;
static uint8_t codec_header_bytes[512];
static unsigned int codec_header_bytes_size = sizeof(codec_header_bytes);
static FILE *source_file;
/* Macros abstracting the I/O, just to make the example code clearer */
#define SOURCE_OPEN(uri) \
source_file = fopen(uri, "rb"); if (!source_file) goto error;
#define SOURCE_READ_CODEC_CONFIG_DATA(bytes, size) \
size = fread(bytes, 1, size, source_file); rewind(source_file)
#define SOURCE_READ_DATA_INTO_BUFFER(a) \
a->length = fread(a->data, 1, a->alloc_size - 128, source_file); \
a->offset = 0
#define SOURCE_CLOSE() \
if (source_file) fclose(source_file)
/** Context for our application */
static struct CONTEXT_T {
VCOS_SEMAPHORE_T semaphore;
MMAL_QUEUE_T *queue;
MMAL_STATUS_T status;
} context;
struct buffer {
unsigned int bo_handle;
int dbuf_fd;
unsigned int vcsm_handle;
MMAL_BUFFER_HEADER_T *mmal_buffer;
GLuint texture;
};
struct drm_setup {
Display *dpy;
EGLDisplay egl_dpy;
EGLContext ctx;
EGLSurface surf;
Window win;
unsigned int out_fourcc;
MMAL_RECT_T compose;
};
static void log_format(MMAL_ES_FORMAT_T *format, MMAL_PORT_T *port)
{
const char *name_type;
if(port)
fprintf(stderr, "%s:%s:%i", port->component->name,
port->type == MMAL_PORT_TYPE_CONTROL ? "ctr" :
port->type == MMAL_PORT_TYPE_INPUT ? "in" :
port->type == MMAL_PORT_TYPE_OUTPUT ? "out" : "invalid",
(int)port->index);
switch(format->type)
{
case MMAL_ES_TYPE_AUDIO: name_type = "audio"; break;
case MMAL_ES_TYPE_VIDEO: name_type = "video"; break;
case MMAL_ES_TYPE_SUBPICTURE: name_type = "subpicture"; break;
default: name_type = "unknown"; break;
}
fprintf(stderr, "type: %s, fourcc: %4.4s\n", name_type, (char *)&format->encoding);
fprintf(stderr, " bitrate: %i, framed: %i\n", format->bitrate,
!!(format->flags & MMAL_ES_FORMAT_FLAG_FRAMED));
fprintf(stderr, " extra data: %i, %p\n", format->extradata_size, format->extradata);
switch(format->type)
{
case MMAL_ES_TYPE_AUDIO:
fprintf(stderr, " samplerate: %i, channels: %i, bps: %i, block align: %i\n",
format->es->audio.sample_rate, format->es->audio.channels,
format->es->audio.bits_per_sample, format->es->audio.block_align);
break;
case MMAL_ES_TYPE_VIDEO:
fprintf(stderr, " width: %i, height: %i, (%i,%i,%i,%i)\n",
format->es->video.width, format->es->video.height,
format->es->video.crop.x, format->es->video.crop.y,
format->es->video.crop.width, format->es->video.crop.height);
fprintf(stderr, " pixel aspect ratio: %i/%i, frame rate: %i/%i\n",
format->es->video.par.num, format->es->video.par.den,
format->es->video.frame_rate.num, format->es->video.frame_rate.den);
break;
case MMAL_ES_TYPE_SUBPICTURE:
break;
default: break;
}
if(!port)
return;
fprintf(stderr, " buffers num: %i(opt %i, min %i), size: %i(opt %i, min: %i), align: %i\n",
port->buffer_num, port->buffer_num_recommended, port->buffer_num_min,
port->buffer_size, port->buffer_size_recommended, port->buffer_size_min,
port->buffer_alignment_min);
}
uint32_t mmal_encoding_to_drm_fourcc(uint32_t mmal_encoding)
{
switch(mmal_encoding)
{
case MMAL_ENCODING_I420:
return MMAL_FOURCC('Y','U','1','2');
case MMAL_ENCODING_YV12:
return MMAL_FOURCC('Y','V','1','2');
case MMAL_ENCODING_I422:
return MMAL_FOURCC('Y','U','1','6');
case MMAL_ENCODING_YUVUV128:
case MMAL_ENCODING_NV12:
return MMAL_FOURCC('N','V','1','2');
case MMAL_ENCODING_NV21:
return MMAL_FOURCC('N','V','2','1');
case MMAL_ENCODING_RGB16:
return MMAL_FOURCC('R','G','1','6');
case MMAL_ENCODING_RGB24:
return MMAL_FOURCC('B','G','2','4');
case MMAL_ENCODING_BGR24:
return MMAL_FOURCC('R','G','2','4');
case MMAL_ENCODING_BGR32:
case MMAL_ENCODING_BGRA:
return MMAL_FOURCC('X','R','2','4');
case MMAL_ENCODING_RGB32:
case MMAL_ENCODING_RGBA:
return MMAL_FOURCC('X','B','2','4');
case MMAL_ENCODING_OPAQUE:
fprintf(stderr, "MMAL_ENCODING_OPAQUE can't be converted to a DRM compatible format\n");
default:
return 0;
}
}
#define VC_IMAGE_YUV_UV_STRIPE_WIDTH_LOG2 7
#define YUV_UV_MAX_STRIPE_HEIGHT 1264
/* 1920 lines * 128 wide columns is a column stride of 0x3c000 which
* just fits once aligned with the current scheme (becomes 0x3c800).
* Adding any more lines than that exceeds the 0x40000 column stride
* limit required by the codec block.
*/
#define YUV_UV_MAX_TALL_MODE_HEIGHT 1920
#define SAND_ALIGN 4096
static int get_sand_column_pitch(int height)
{
int pitch;
if (height <= (YUV_UV_MAX_TALL_MODE_HEIGHT-16))
height += 16; // for di_adv deinterlace
/* calculate required space for a Y stripe then pad it to align UV data */
pitch = ALIGN_UP(ALIGN_UP(height, 16) * 128, SAND_ALIGN);
/* For tall YUV_UV images, use independent stripes for UV.
* Pitch copes with only the Y (or the UV); the number of stripes is
* doubled.
* (See YUV_UV_MAX_STRIPE_HEIGHT).
*/
if (height <= YUV_UV_MAX_STRIPE_HEIGHT)
{
/* then add the UV stripe space and re-align */
pitch = ALIGN_UP(pitch * 3 >> 1, SAND_ALIGN);
}
/*
The requirement in the source that the stride be an odd multiple of two pages in size is actually over-restrictive.
The intention is that in a four-bank SDRAM if a motion compensation source location overlaps a stripe boundary in X
and a page transition in Y then the four pages covered are in different banks (call this the "four corners property").
As we have an eight-bank device we get the desired effect if the stride is a multiple of the page size and stride/pagesize & 7 != 0, 1 or 7.
On Pi 2 our wacky custom SDRAM gives us 8k (64-line) pages, while on Pi 1 we have 4k (32-line) pages.
I think our best bet to satisfy the "four corners" property and avoid aliasing is to pad stripes to an odd multiple of 2k (an odd multiple of 16 lines),
and to avoid multiples which bring the banks in adjacent stripes so nearly into alignment that a 23 pixel high motcomp neighbourhood
can reach from a bank n page in stripe x to a bank n page in stripe x+1.
*/
int h;
for (h = pitch >> (VC_IMAGE_YUV_UV_STRIPE_WIDTH_LOG2 + 4); ; h++)
{
if (0) //vc_image_helper_get_sdram_page_size() == 8192)
{
int hh = h % 32;
if ((hh & 1) && hh >= 7 && hh <= 25)
break;
}
else
{
//vcos_assert(vc_image_helper_get_sdram_page_size() == 4096);
int hh = h % 16;
if ((hh & 1) && hh >= 5 && hh <= 11)
break;
}
}
h <<= 4;
return h;
}
void mmal_format_to_drm_pitches_offsets(uint32_t *pitches, uint32_t *offsets,
uint64_t *modifiers, uint32_t *bo_handles, MMAL_ES_FORMAT_T *format)
{
switch (format->encoding)
{
// 3 plane YUV formats
case MMAL_ENCODING_I420:
case MMAL_ENCODING_YV12:
pitches[0] = mmal_encoding_width_to_stride(format->encoding, format->es->video.width);
pitches[1] = pitches[0] / 2;
pitches[2] = pitches[1];
offsets[1] = pitches[0] * format->es->video.height;
offsets[2] = offsets[1] + pitches[1] * format->es->video.height/2;
bo_handles[1] = bo_handles[2] = bo_handles[0];
break;
case MMAL_ENCODING_I422:
pitches[0] = mmal_encoding_width_to_stride(format->encoding, format->es->video.width);
pitches[1] = pitches[0] / 2;
pitches[2] = pitches[1];
offsets[1] = pitches[0] * format->es->video.height;
offsets[2] = offsets[1] + pitches[1] * format->es->video.height;
bo_handles[1] = bo_handles[2] = bo_handles[0];
break;
// 2 plane YUV formats
case MMAL_ENCODING_NV12:
case MMAL_ENCODING_NV21:
pitches[0] = mmal_encoding_width_to_stride(format->encoding, format->es->video.width);
pitches[1] = pitches[0];
offsets[1] = pitches[0] * format->es->video.height;
bo_handles[1] = bo_handles[0];
break;
case MMAL_ENCODING_YUVUV128:
pitches[0] = format->es->video.width; //Should be 128, but DRM rejects that.
modifiers[0] = DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT(get_sand_column_pitch(format->es->video.height));
printf("Modifier set as %llu, param %u\n", modifiers[0], fourcc_mod_broadcom_param(modifiers[0]));
modifiers[1] = modifiers[0];
pitches[1] = pitches[0];
offsets[1] = 128 * (format->es->video.height+32); //ISP seems to produce an extra 16 lines of padding. Don't know why.
bo_handles[1] = bo_handles[0];
break;
default:
pitches[0] = mmal_encoding_width_to_stride(format->encoding, format->es->video.width);
break;
}
printf("MMAL format %08x translates to pitches [%u,%u,%u,%u], and offsets [%u,%u,%u,%u], and modifiers [%llx,%llx,%llx,%llx]\n",
format->encoding,
pitches[0],pitches[1],pitches[2],pitches[3],
offsets[0],offsets[1],offsets[2],offsets[3],
modifiers[0],modifiers[1],modifiers[2],modifiers[3]
);
}
#define BUFFER_IMPORT 0
static int buffer_create(struct buffer *b, int drmfd, MMAL_PORT_T *port,
EGLDisplay dpy, EGLContext ctx)
{
uint32_t offsets[4] = { 0 };
uint32_t pitches[4] = { 0 };
uint32_t bo_handles[4] = { 0 };
uint64_t modifiers[4] = { 0 };
unsigned int fourcc = mmal_encoding_to_drm_fourcc(port->format->encoding);
int ret;
#if BUFFER_IMPORT
struct drm_mode_create_dumb gem;
struct drm_mode_destroy_dumb gem_destroy;
memset(&gem, 0, sizeof gem);
gem.width = port->format->es->video.width;
gem.height = port->format->es->video.height;
gem.bpp = 32;
gem.size = port->buffer_size;
ret = ioctl(drmfd, DRM_IOCTL_MODE_CREATE_DUMB, &gem);
if (ret)
{
printf("CREATE_DUMB failed: %s\n", ERRSTR);
return -1;
}
printf("bo %u %ux%u bpp %u size %lu (%u)\n", gem.handle, gem.width, gem.height, gem.bpp, (long)gem.size, port->buffer_size);
b->bo_handle = gem.handle;
struct drm_prime_handle prime;
memset(&prime, 0, sizeof prime);
prime.handle = b->bo_handle;
ret = ioctl(drmfd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &prime);
if (ret)
{
printf("PRIME_HANDLE_TO_FD failed: %s\n", ERRSTR);
goto fail_gem;
}
printf("dbuf_fd = %d\n", prime.fd);
b->dbuf_fd = prime.fd;
b->vcsm_handle = vcsm_import_dmabuf(b->dbuf_fd, "DRM Buf");
if (!b->vcsm_handle)
goto fail_prime;
#else
b->vcsm_handle = vcsm_malloc(port->buffer_size, "DRM Buf");
if (!b->vcsm_handle)
{
printf("vcsm_malloc failed: %s\n", ERRSTR);
return -1;
}
b->dbuf_fd = vcsm_export_dmabuf(b->vcsm_handle);
if (b->dbuf_fd < 0)
{
printf("vcsm_export failed: %s\n", ERRSTR);
goto fail_vcsm;
}
//struct drm_prime_handle prime;
//memset(&prime, 0, sizeof prime);
//prime.fd = b->dbuf_fd;
//ret = ioctl(drmfd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &prime);
ret = drmPrimeFDToHandle(drmfd, b->dbuf_fd, &b->bo_handle);
if (ret)
{
printf("DRM_IOCTL_PRIME_FD_TO_HANDLE failed: %s\n", ERRSTR);
goto fail_unexport;
}
//b->bo_handle = prime.handle;
printf("prime_bo = %d\n", b->bo_handle);
#endif
bo_handles[0] = b->bo_handle;
mmal_format_to_drm_pitches_offsets(pitches, offsets, modifiers, bo_handles, port->format);
fprintf(stderr, "FB fourcc %c%c%c%c\n",
fourcc,
fourcc >> 8,
fourcc >> 16,
fourcc >> 24);
EGLint attribs[50];
int i = 0;
attribs[i++] = EGL_WIDTH;
attribs[i++] = port->format->es->video.crop.width;
attribs[i++] = EGL_HEIGHT;
attribs[i++] = port->format->es->video.crop.height;
attribs[i++] = EGL_LINUX_DRM_FOURCC_EXT;
attribs[i++] = fourcc;
attribs[i++] = EGL_DMA_BUF_PLANE0_FD_EXT;
attribs[i++] = b->dbuf_fd;
attribs[i++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
attribs[i++] = offsets[0];
attribs[i++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
attribs[i++] = pitches[0];
if (modifiers[0]) {
attribs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT ;
attribs[i++] = modifiers[0] & 0xFFFFFFFF;
attribs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT ;
attribs[i++] = modifiers[0] >> 32;
}
if (pitches[1]) {
attribs[i++] = EGL_DMA_BUF_PLANE1_FD_EXT;
attribs[i++] = b->dbuf_fd;
attribs[i++] = EGL_DMA_BUF_PLANE1_OFFSET_EXT;
attribs[i++] = offsets[1];
attribs[i++] = EGL_DMA_BUF_PLANE1_PITCH_EXT;
attribs[i++] = pitches[1];
if (modifiers[1]) {
attribs[i++] = EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT ;
attribs[i++] = modifiers[1] & 0xFFFFFFFF;
attribs[i++] = EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT ;
attribs[i++] = modifiers[1] >> 32;
}
}
if (pitches[2]) {
attribs[i++] = EGL_DMA_BUF_PLANE2_FD_EXT;
attribs[i++] = b->dbuf_fd;
attribs[i++] = EGL_DMA_BUF_PLANE2_OFFSET_EXT;
attribs[i++] = offsets[2];
attribs[i++] = EGL_DMA_BUF_PLANE2_PITCH_EXT;
attribs[i++] = pitches[2];
if (modifiers[2]) {
attribs[i++] = EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT ;
attribs[i++] = modifiers[2] & 0xFFFFFFFF;
attribs[i++] = EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT ;
attribs[i++] = modifiers[2] >> 32;
}
}
attribs[i++] = EGL_NONE;
EGLImage image = eglCreateImageKHR(dpy,
EGL_NO_CONTEXT,
EGL_LINUX_DMA_BUF_EXT,
NULL, attribs);
if (!image) {
fprintf(stderr, "Failed to import fd %d\n", b->dbuf_fd);
exit(1);
}
glGenTextures(1, &b->texture);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, b->texture);
glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, image);
eglDestroyImageKHR(dpy, image);
return 0;
#if BUFFER_IMPORT
fail_prime:
close(b->dbuf_fd);
fail_gem:
memset(&gem_destroy, 0, sizeof gem_destroy);
gem_destroy.handle = b->bo_handle,
ret = ioctl(drmfd, DRM_IOCTL_MODE_DESTROY_DUMB, &gem_destroy);
if (ret)
{
printf("DESTROY_DUMB failed: %s\n", ERRSTR);
}
#else
fail_free_all:
{
//How do I release the PRIME_FD_TO_HANDLE handle? Is it this?
struct drm_gem_close gem_close;
memset(&gem_close, 0, sizeof gem_close);
gem_close.handle = b->bo_handle;
if (drmIoctl(drmfd, DRM_IOCTL_GEM_CLOSE, &gem_close) < 0)
printf("cant close gem: %s\n", strerror(errno));
}
fail_unexport:
close(b->dbuf_fd);
fail_vcsm:
vcsm_free(b->vcsm_handle);
#endif
return -1;
}
MMAL_POOL_T* pool_create_drm(MMAL_PORT_T *port, struct buffer *buffers, int drmfd,
EGLDisplay dpy, EGLContext ctx)
{
MMAL_POOL_T *pool;
unsigned int i;
pool = mmal_port_pool_create(port,
port->buffer_num,
0);
for (i = 0; i < port->buffer_num; i++)
{
buffer_create(&buffers[i], drmfd, port, dpy, ctx);
pool->header[i]->data = (uint8_t*)vcsm_vc_hdl_from_hdl(buffers[i].vcsm_handle);
pool->header[i]->alloc_size = port->buffer_size;
pool->header[i]->length = 0;
buffers[i].mmal_buffer = pool->header[i];
}
return pool;
}
void buffer_destroy(int drmfd, struct buffer *buf)
{
#if BUFFER_IMPORT
struct drm_mode_destroy_dumb gem_destroy;
vcsm_free(buf->vcsm_handle);
glDeleteTextures(1, &buf->texture);
close(buf->dbuf_fd);
memset(&gem_destroy, 0, sizeof gem_destroy);
gem_destroy.handle = buf->bo_handle;
ioctl(drmfd, DRM_IOCTL_MODE_DESTROY_DUMB, &gem_destroy);
#else
//How do I release the PRIME_FD_TO_HANDLE handle? Is it this?
{
struct drm_gem_close gem_close;
memset(&gem_close, 0, sizeof gem_close);
gem_close.handle = buf->bo_handle;
if (drmIoctl(drmfd, DRM_IOCTL_GEM_CLOSE, &gem_close) < 0)
printf("cant close gem: %s\n", strerror(errno));
}
glDeleteTextures(1, &buf->texture);
close(buf->dbuf_fd);
vcsm_free(buf->vcsm_handle);
#endif
}
void pool_destroy_drm(MMAL_PORT_T *port, MMAL_POOL_T *pool, struct buffer *buffers, int drmfd)
{
unsigned int i;
for (i = 0; i < pool->headers_num; i++)
{
buffer_destroy(drmfd, &buffers[i]);
}
mmal_port_pool_destroy(port, pool);
}
/** Callback from the control port.
* Component is sending us an event. */
static void control_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
struct CONTEXT_T *ctx = (struct CONTEXT_T *)port->userdata;
switch (buffer->cmd)
{
case MMAL_EVENT_EOS:
/* Only sink component generate EOS events */
break;
case MMAL_EVENT_ERROR:
/* Something went wrong. Signal this to the application */
ctx->status = *(MMAL_STATUS_T *)buffer->data;
break;
default:
break;
}
/* Done with the event, recycle it */
mmal_buffer_header_release(buffer);
/* Kick the processing thread */
vcos_semaphore_post(&ctx->semaphore);
}
/** Callback from the input port.
* Buffer has been consumed and is available to be used again. */
static void input_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
struct CONTEXT_T *ctx = (struct CONTEXT_T *)port->userdata;
/* The decoder is done with the data, just recycle the buffer header into its pool */
mmal_buffer_header_release(buffer);
/* Kick the processing thread */
vcos_semaphore_post(&ctx->semaphore);
}
/** Callback from the output port.
* Buffer has been produced by the port and is available for processing. */
static void output_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
struct CONTEXT_T *ctx = (struct CONTEXT_T *)port->userdata;
/* Queue the decoded video frame */
//fprintf(stderr, "Buffer %p returned cmd %08X, length %u\n", buffer, buffer->cmd, buffer->length);
mmal_queue_put(ctx->queue, buffer);
/* Kick the processing thread */
vcos_semaphore_post(&ctx->semaphore);
}
static void drm_mmal_connection_cb(MMAL_CONNECTION_T *connection)
{
struct CONTEXT_T *ctx = (struct CONTEXT_T *)connection->user_data;
vcos_semaphore_post(&ctx->semaphore);
}
static int drm_mmal_create_buffers(MMAL_PORT_T *port, struct buffer *buffers, int drmfd, MMAL_POOL_T **pool_out,
EGLDisplay dpy, EGLContext ctx)
{
MMAL_STATUS_T status;
port->buffer_size = port->buffer_size_min;
printf("Set buffer size to %d\n", port->buffer_size);
status = mmal_port_format_commit(port);
*pool_out = pool_create_drm(port, buffers, drmfd, dpy, ctx);
status = mmal_port_enable(port, output_callback);
CHECK_STATUS(status, "failed to enable port");
return 0;
error:
return status;
}
static int drm_mmal_destroy_buffers(MMAL_PORT_T *port, struct buffer *buffers, int drmfd, MMAL_POOL_T *pool_out)
{
MMAL_STATUS_T status;
status = mmal_port_disable(port);
CHECK_STATUS(status, "failed to disable port");
//Clear the queue of all buffers
while(mmal_queue_length(pool_out->queue) != pool_out->headers_num)
{
MMAL_BUFFER_HEADER_T *buf;
fprintf(stderr, "Wait for buffers to be returned. Have %d of %d buffers\n",
mmal_queue_length(pool_out->queue), pool_out->headers_num);
vcos_semaphore_wait(&context.semaphore);
fprintf(stderr, "Got semaphore\n");
buf = mmal_queue_get(context.queue);
printf("Retrieved buf %p\n", buf);
if (buf)
mmal_buffer_header_release(buf);
}
fprintf(stderr, "Got all buffers\n");
pool_destroy_drm(port, pool_out, buffers, drmfd);
return 0;
error:
return status;
}
/**
* Remove window border/decorations.
*/
static void
no_border( Display *dpy, Window w)
{
static const unsigned MWM_HINTS_DECORATIONS = (1 << 1);
static const int PROP_MOTIF_WM_HINTS_ELEMENTS = 5;
typedef struct
{
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long inputMode;
unsigned long status;
} PropMotifWmHints;
PropMotifWmHints motif_hints;
Atom prop, proptype;
unsigned long flags = 0;
/* setup the property */
motif_hints.flags = MWM_HINTS_DECORATIONS;
motif_hints.decorations = flags;
/* get the atom for the property */
prop = XInternAtom( dpy, "_MOTIF_WM_HINTS", True );
if (!prop) {
/* something went wrong! */
return;
}
/* not sure this is correct, seems to work, XA_WM_HINTS didn't work */
proptype = prop;
XChangeProperty( dpy, w, /* display, window */
prop, proptype, /* property, type */
32, /* format: 32-bit datums */
PropModeReplace, /* mode */
(unsigned char *) &motif_hints, /* data */
PROP_MOTIF_WM_HINTS_ELEMENTS /* nelements */
);
}
/*
* Create an RGB, double-buffered window.
* Return the window and context handles.
*/
static void
make_window( Display *dpy, EGLDisplay egl_dpy, const char *name,
int x, int y, int width, int height,
Window *winRet, EGLContext *ctxRet, EGLSurface *surfRet)
{
int scrnum = DefaultScreen( dpy );
XSetWindowAttributes attr;
unsigned long mask;
Window root = RootWindow( dpy, scrnum );
Window win;
EGLContext ctx;
bool fullscreen = false; /* Hook this up to a command line arg */
if (fullscreen) {
int scrnum = DefaultScreen(dpy);
x = 0; y = 0;
width = DisplayWidth(dpy, scrnum);
height = DisplayHeight(dpy, scrnum);
}
static const EGLint attribs[] = {
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
EGLConfig config;
EGLint num_configs;
if (!eglChooseConfig(egl_dpy, attribs, &config, 1, &num_configs)) {
printf("Error: couldn't get an EGL visual config\n");
exit(1);
}
EGLint vid;
if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
printf("Error: eglGetConfigAttrib() failed\n");
exit(1);
}
XVisualInfo visTemplate = {
.visualid = vid,
};
int num_visuals;
XVisualInfo *visinfo = XGetVisualInfo(dpy, VisualIDMask,
&visTemplate, &num_visuals);
/* window attributes */
attr.background_pixel = 0;
attr.border_pixel = 0;
attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone);
attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
/* XXX this is a bad way to get a borderless window! */
mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
win = XCreateWindow( dpy, root, x, y, width, height,
0, visinfo->depth, InputOutput,
visinfo->visual, mask, &attr );
if (fullscreen)
no_border(dpy, win);
/* set hints and properties */
{
XSizeHints sizehints;
sizehints.x = x;
sizehints.y = y;
sizehints.width = width;
sizehints.height = height;
sizehints.flags = USSize | USPosition;
XSetNormalHints(dpy, win, &sizehints);
XSetStandardProperties(dpy, win, name, name,
None, (char **)NULL, 0, &sizehints);
}
eglBindAPI(EGL_OPENGL_ES_API);
static const EGLint ctx_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, ctx_attribs );
if (!ctx) {
printf("Error: eglCreateContext failed\n");
exit(1);
}
XFree(visinfo);
XMapWindow(dpy, win);
EGLSurface surf = eglCreateWindowSurface(egl_dpy, config,
(void *)(uintptr_t)win, NULL);
if (!surf) {
printf("Error: eglCreateWindowSurface failed\n");
exit(1);
}
if (!eglMakeCurrent(egl_dpy, surf, surf, ctx)) {
printf("Error: eglCreateContext failed\n");
exit(1);
}
*winRet = win;
*ctxRet = ctx;
*surfRet = surf;
}
static GLint
compile_shader(GLenum target, const char *source)
{
GLuint s = glCreateShader(target);
glShaderSource(s, 1, (const GLchar **) &source, NULL);
glCompileShader(s);
GLint ok;
glGetShaderiv(s, GL_COMPILE_STATUS, &ok);
if (!ok) {
GLchar *info;
GLint size;
glGetShaderiv(s, GL_INFO_LOG_LENGTH, &size);
info = malloc(size);
glGetShaderInfoLog(s, size, NULL, info);
fprintf(stderr, "Failed to compile shader: %s\n", info);
fprintf(stderr, "source:\n%s", source);
exit(1);
}
return s;
}
static GLint link_program(GLint vs, GLint fs)
{
GLint prog = glCreateProgram();
glAttachShader(prog, vs);
glAttachShader(prog, fs);
glLinkProgram(prog);
GLint ok;
glGetProgramiv(prog, GL_LINK_STATUS, &ok);
if (!ok) {
/* Some drivers return a size of 1 for an empty log. This is the size
* of a log that contains only a terminating NUL character.
*/
GLint size;
GLchar *info = NULL;
glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &size);
if (size > 1) {
info = malloc(size);
glGetProgramInfoLog(prog, size, NULL, info);
}