Re: [PATCH spice-server v2 4/6] Add an helper to test VideoEncoder

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



ping

 
> Add an utility to make possible to check various features of
> VideoEncoder.
> 2 GStreamer plugins are used in a chain like this:
>   (1) input pipeline -> (2) video encoder -> (3) output pipeline
> While converting output from (1) is compared with output of (3)
> making sure the streaming is working correctly.
> You can set various options:
> - part of the input pipeline description to allow specifying different
>   video from GStreamer test ones to a video file;
> - the encoder to use;
> - different image properties to use for (2) input:
>   - different bit depth;
>   - top/down or down/up;
> - initial bitrate.
> 
> The idea is to use this helper in combination with a shell script
> and some video sources to make able to test various settings.
> Also can be used to extend the current encoder list.
> 
> As an example you can use a command like
> 
> $ ./gst-test -e gstreamer:vp8 -i \
>   'filesrc location=bbb_sunflower_1080p_30fps_normal.mp4 \
>   ! decodebin ! videoconvert'
> 
> to check vp8 encoding.
> 
> Currently it does not emulate bandwidth changes as stream reports
> from the client are not coded.
> 
> Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
> ---
>  server/tests/Makefile.am |   9 +
>  server/tests/gst-test.c  | 936
>  +++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 945 insertions(+)
>  create mode 100644 server/tests/gst-test.c
> 
> Changes since v1:
> - added option to split image into multiple chunks;
> - added option to specify minimum PSNR;
> - fix check for video finished;
> - do not queue too much data to output;
> - fix clipping;
> - remove RFC.
> 
> diff --git a/server/tests/Makefile.am b/server/tests/Makefile.am
> index 8580a9a..c799779 100644
> --- a/server/tests/Makefile.am
> +++ b/server/tests/Makefile.am
> @@ -57,6 +57,7 @@ noinst_PROGRAMS =				\
>  	test_vdagent				\
>  	test_display_width_stride		\
>  	spice-server-replay			\
> +	gst-test				\
>  	$(check_PROGRAMS)			\
>  	$(NULL)
>  
> @@ -105,3 +106,11 @@ libstat_test4_a_SOURCES = stat-test.c
>  libstat_test4_a_CPPFLAGS = $(AM_CPPFLAGS) -DTEST_COMPRESS_STAT=1
>  -DTEST_RED_WORKER_STAT=1 -DTEST_NAME=stat_test4
>  
>  test_qxl_parsing_LDADD = ../libserver.la $(LDADD)
> +
> +gst_test_SOURCES = gst-test.c \
> +	$(NULL)
> +gst_test_CPPFLAGS = \
> +	$(AM_CPPFLAGS) \
> +	$(GSTREAMER_0_10_CFLAGS)		\
> +	$(GSTREAMER_1_0_CFLAGS)			\
> +	$(NULL)
> diff --git a/server/tests/gst-test.c b/server/tests/gst-test.c
> new file mode 100644
> index 0000000..0a68d7d
> --- /dev/null
> +++ b/server/tests/gst-test.c
> @@ -0,0 +1,936 @@
> +/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
> +/*
> +   Copyright (C) 2016 Red Hat, Inc.
> +
> +   This library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   This library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with this library; if not, see
> <http://www.gnu.org/licenses/>.
> +*/
> +/* Utility to check video encoder code
> + */
> +#undef NDEBUG
> +#include <config.h>
> +#include <stdio.h>
> +#include <glib.h>
> +#include <string.h>
> +#include <errno.h>
> +#include <math.h>
> +#include <pthread.h>
> +#include <common/log.h>
> +#include <gst/gst.h>
> +#include <gst/app/gstappsrc.h>
> +#include <gst/app/gstappsink.h>
> +
> +#include "video-encoder.h"
> +#include "spice-bitmap-utils.h"
> +#include "reds.h" // reds_get_mm_time
> +
> +// clipping informations passed in command line
> +typedef enum {
> +    COORDS_INVALID,
> +    COORDS_NUMBER,
> +    COORDS_PERCENT,
> +} CoordsUnit;
> +static struct {
> +    unsigned int value;
> +    CoordsUnit unit;
> +} clipping_coords[4];
> +enum {
> +    COORDS_BOX,
> +    COORDS_SIZE
> +} clipping_type;
> +
> +typedef struct {
> +    gint refs;
> +    SpiceBitmap *bitmap;
> +} TestFrame;
> +
> +typedef void (*SampleProc)(GstSample *sample, void *param);
> +
> +typedef struct {
> +    GstAppSrc *appsrc;
> +    GstAppSink *appsink;
> +    GstElement *gst_pipeline;
> +    SampleProc sample_proc;
> +    void *sample_param;
> +    gboolean got_eos;
> +} TestPipeline;
> +
> +typedef struct {
> +    const char *name;
> +    new_video_encoder_t new_encoder;
> +    SpiceVideoCodecType coded_type;
> +    // see spice-gtk channel-display-gst.c
> +    const char *caps_dec;
> +} EncoderInfo;
> +
> +// our video encoder we are testing
> +static VideoEncoder *video_encoder = NULL;
> +
> +// image settings
> +static gboolean top_down = FALSE;
> +static SpiceBitmapFmt bitmap_format = SPICE_BITMAP_FMT_32BIT;
> +static gint image_split_lines = 60000;
> +
> +static gboolean clipping_type_computed = FALSE;
> +static SpiceRect clipping_rect;
> +static pthread_mutex_t frame_queue_mtx = PTHREAD_MUTEX_INITIALIZER;
> +static pthread_cond_t frame_queue_cond = PTHREAD_COND_INITIALIZER;
> +static GQueue frame_queue = G_QUEUE_INIT;
> +static TestPipeline *input_pipeline, *output_pipeline;
> +static pthread_mutex_t eos_mtx = PTHREAD_MUTEX_INITIALIZER;
> +static pthread_cond_t eos_cond = PTHREAD_COND_INITIALIZER;
> +// minimum image different expected, depends on quality
> +// and encoder
> +static gdouble minimum_psnr = 25;
> +static uint64_t starting_bit_rate = 3000000;
> +
> +static void compute_clipping_rect(GstSample *sample);
> +static void parse_clipping(const char *clipping);
> +static TestFrame *gst_to_spice_frame(GstSample *sample);
> +static void bitmap_free(SpiceBitmap *bitmap);
> +static void frame_ref(TestFrame *frame);
> +static void frame_unref(TestFrame *frame);
> +static void pipeline_send_raw_data(TestPipeline *pipeline, VideoBuffer
> *buffer);
> +static void pipeline_wait_eos(TestPipeline *pipeline);
> +static void create_input_pipeline(const char *input_pipeline,
> +                                  SampleProc sample_proc, void *param);
> +static void create_output_pipeline(const EncoderInfo *encoder,
> +                                   SampleProc output_frames, void *param);
> +static void create_video_encoder(const EncoderInfo *encoder);
> +static const EncoderInfo *get_encoder_info(const char *encoder_name);
> +static SpiceBitmapFmt get_bitmap_format(const char *format);
> +static double compute_psnr(SpiceBitmap *bitmap1, int32_t x1, int32_t y1,
> +                           SpiceBitmap *bitmap2, int32_t x2, int32_t y2,
> +                           int32_t w, int32_t h);
> +
> +// handle output frames from input pipeline
> +static void
> +input_frames(GstSample *sample, void *param)
> +{
> +    spice_assert(video_encoder && sample);
> +
> +    if (SPICE_UNLIKELY(!clipping_type_computed)) {
> +        compute_clipping_rect(sample);
> +    }
> +
> +    VideoBuffer *p_outbuf = NULL;
> +    // TODO correct ?? emulate another timer ??
> +    uint32_t frame_mm_time = reds_get_mm_time();
> +
> +    // convert frame to SpiceBitmap/DRM prime
> +    TestFrame *frame = gst_to_spice_frame(sample);
> +
> +    // send frame to our video encoder (must be from a single thread)
> +    int res = video_encoder->encode_frame(video_encoder, frame_mm_time,
> frame->bitmap,
> +                                          &clipping_rect, top_down, frame,
> +                                          &p_outbuf);
> +    switch (res) {
> +    case VIDEO_ENCODER_FRAME_ENCODE_DONE:
> +        // save frame into queue for comparison later
> +        frame_ref(frame);
> +        pthread_mutex_lock(&frame_queue_mtx);
> +        g_queue_push_tail(&frame_queue, frame);
> +        while (g_queue_get_length(&frame_queue) >= 16) {
> +            pthread_cond_wait(&frame_queue_cond, &frame_queue_mtx);
> +        }
> +        pthread_mutex_unlock(&frame_queue_mtx);
> +        spice_assert(p_outbuf);
> +        pipeline_send_raw_data(output_pipeline, p_outbuf);
> +        break;
> +    case VIDEO_ENCODER_FRAME_UNSUPPORTED:
> +        // ?? what to do ??
> +        // should not happen, format passed should be supported
> +        // could happen for serious problems and encoder gave up
> +        spice_assert(0);
> +        break;
> +    case VIDEO_ENCODER_FRAME_DROP:
> +        break;
> +    default:
> +        // invalid value returned
> +        spice_assert(0);
> +    }
> +
> +    // TODO call client_stream_report to simulate this report from the
> client
> +
> +    frame_unref(frame);
> +}
> +
> +// handle output frames from output pipeline
> +static void
> +output_frames(GstSample *sample, void *param)
> +{
> +    TestFrame *curr_frame = gst_to_spice_frame(sample);
> +
> +    // get first frame queued
> +    pthread_mutex_lock(&frame_queue_mtx);
> +    TestFrame *expected_frame = g_queue_pop_head(&frame_queue);
> +    pthread_cond_signal(&frame_queue_cond);
> +    pthread_mutex_unlock(&frame_queue_mtx);
> +    if (!expected_frame) {
> +        g_printerr("Frame not present in the queue but arrived in
> output!\n");
> +        exit(1);
> +    }
> +
> +    // TODO try to understand if this is correct
> +    if (!top_down) {
> +        curr_frame->bitmap->flags ^= SPICE_BITMAP_FLAGS_TOP_DOWN;
> +    }
> +#ifdef DUMP_BITMAP
> +    dump_bitmap(expected_frame->bitmap);
> +    dump_bitmap(curr_frame->bitmap);
> +#endif
> +
> +    // compute difference
> +    double psnr = compute_psnr(expected_frame->bitmap, clipping_rect.left,
> clipping_rect.top,
> +                               curr_frame->bitmap, 0, 0,
> +                               clipping_rect.right - clipping_rect.left,
> +                               clipping_rect.bottom - clipping_rect.top);
> +
> +    // check is more or less the same
> +    if (psnr < minimum_psnr) {
> +        g_printerr("Frame PSNR too low, got %g minimum %g\n", psnr,
> minimum_psnr);
> +        exit(1);
> +    }
> +
> +    frame_unref(expected_frame);
> +    frame_unref(curr_frame);
> +}
> +
> +static const EncoderInfo encoder_infos[] = {
> +    { "mjpeg", mjpeg_encoder_new, SPICE_VIDEO_CODEC_TYPE_MJPEG,
> +      "caps=image/jpeg ! jpegdec" },
> +    { "gstreamer:mjpeg", gstreamer_encoder_new,
> SPICE_VIDEO_CODEC_TYPE_MJPEG,
> +      "caps=image/jpeg ! jpegdec" },
> +    { "gstreamer:vp8",   gstreamer_encoder_new, SPICE_VIDEO_CODEC_TYPE_VP8,
> +      "caps=video/x-vp8 ! vp8dec" },
> +    { "gstreamer:h264",  gstreamer_encoder_new, SPICE_VIDEO_CODEC_TYPE_H264,
> +      "! h264parse ! avdec_h264" },
> +    { NULL, NULL }
> +};
> +
> +int main(int argc, char *argv[])
> +{
> +    gchar *input_pipeline_desc = NULL;
> +    gchar *image_format = "32BIT";
> +    gchar *encoder_name = "mjpeg";
> +    gboolean use_hw_encoder = FALSE; // TODO use
> +    gchar *clipping = "(0,0)x(100%,100%)";
> +
> +    // - input pipeline
> +    // - top/down
> +    // - format for video encoder input (bits, rgb/bgr)
> +    // - encoder (mjpeg/vp8/h264)
> +    // - use h/w acceleration (if available)
> +    // - clipping (part of the source)
> +    // - TODO bandwidth changes?
> +    // - TODO fps ??
> +    GOptionEntry entries[] = {
> +        { "input-pipeline", 'i', 0, G_OPTION_ARG_STRING,
> &input_pipeline_desc,
> +          "GStreamer input pipeline", "PIPELINE" },
> +        { "top-down", 0, 0, G_OPTION_ARG_NONE, &top_down,
> +          "Image encoded as top-down", NULL },
> +        { "format", 'f', 0, G_OPTION_ARG_STRING, &image_format,
> +          "Image format (16BIT/24BIT/32BIT/RGBA)", "FMT" },
> +        { "encoder", 'e', 0, G_OPTION_ARG_STRING, &encoder_name,
> +          "Encoder to use", "ENC" },
> +        { "use-hw-encoder", 0, 0, G_OPTION_ARG_NONE, &use_hw_encoder,
> +          "Use H/W encoders if possible", NULL },
> +        { "clipping", 0, 0, G_OPTION_ARG_STRING, &clipping,
> +          "Clipping region (x1,y1)-(x2,y2) or (x,y)x(w,h)", "STRING" },
> +        { "starting-bitrate", 0, 0, G_OPTION_ARG_INT64, &starting_bit_rate,
> +          "Initial bitrate", "BITRATE" },
> +        { "min-psnr", 0, 0, G_OPTION_ARG_DOUBLE, &minimum_psnr,
> +          "Minimum PSNR accepted", "PSNR" },
> +        { "split-lines", 0, 0, G_OPTION_ARG_INT, &image_split_lines,
> +          "Split image into different chunks every LINES lines", "LINES" },
> +        { NULL }
> +    };
> +
> +    GOptionContext *context = NULL;
> +    GError *error = NULL;
> +    context = g_option_context_new("- helper for testing VideoEncoder");
> +    g_option_context_add_main_entries(context, entries, NULL);
> +    if (!g_option_context_parse(context, &argc, &argv, &error)) {
> +        g_printerr("Option parsing failed: %s\n", error->message);
> +        exit(1);
> +    }
> +
> +    if (!input_pipeline_desc) {
> +        g_printerr("Input pipeline option missing\n");
> +        exit(1);
> +    }
> +
> +    if (!encoder_name) {
> +        g_printerr("Encoder name option missing\n");
> +        exit(1);
> +    }
> +
> +    const EncoderInfo *encoder = get_encoder_info(encoder_name);
> +    if (!encoder) {
> +        g_printerr("Encoder name unsupported: %s\n", encoder_name);
> +        exit(1);
> +    }
> +
> +    bitmap_format = get_bitmap_format(image_format);
> +    if (bitmap_format == SPICE_BITMAP_FMT_INVALID) {
> +        g_printerr("Invalid image format: %s\n", image_format);
> +        exit(1);
> +    }
> +
> +    parse_clipping(clipping);
> +
> +    if (minimum_psnr < 0) {
> +        g_printerr("Invalid PSNR specified %f\n", minimum_psnr);
> +        exit(1);
> +    }
> +
> +    if (image_split_lines < 1) {
> +        g_printerr("Invalid --split-lines option: %d\n", image_split_lines);
> +        exit(1);
> +    }
> +
> +    gst_init(&argc, &argv);
> +
> +    // TODO give particular error if pipeline fails to be created
> +
> +    create_output_pipeline(encoder, output_frames, NULL);
> +
> +    create_video_encoder(encoder);
> +
> +    create_input_pipeline(input_pipeline_desc, input_frames, NULL);
> +
> +    // run all input streaming
> +    pipeline_wait_eos(input_pipeline);
> +
> +    video_encoder->destroy(video_encoder);
> +
> +    // send EOS to output and wait
> +    // this assure we processed all frames sent from input pipeline
> +    if (gst_app_src_end_of_stream(output_pipeline->appsrc) != GST_FLOW_OK) {
> +        g_printerr("gst_app_src_end_of_stream failed\n");
> +        exit(1);
> +    }
> +    pipeline_wait_eos(output_pipeline);
> +
> +    // check queue is now empty
> +    pthread_mutex_lock(&frame_queue_mtx);
> +    TestFrame *frame = g_queue_pop_head(&frame_queue);
> +    pthread_mutex_unlock(&frame_queue_mtx);
> +    if (frame) {
> +        g_printerr("Queue not empty at the end\n");
> +        exit(1);
> +    }
> +
> +    return 0;
> +}
> +
> +static void
> +parse_clipping(const char *clipping)
> +{
> +    spice_assert(clipping);
> +
> +#define NUM_FMT "%31[^,)]"
> +#define NUM(n) coords[n]
> +    char coords[4][32];
> +    char clipping_type_sign[2];
> +    int i;
> +
> +    if (sscanf(clipping, "(" NUM_FMT "," NUM_FMT ")%1[x-](" NUM_FMT ","
> NUM_FMT ")",
> +               NUM(0), NUM(1), clipping_type_sign, NUM(2), NUM(3)) < 5) {
> +        goto format_error;
> +    }
> +    for (i = 0; i < 4; ++i) {
> +        char *end = NULL;
> +        errno = 0;
> +        clipping_coords[i].unit = COORDS_NUMBER;
> +        clipping_coords[i].value = strtoul(coords[i], &end, 10);
> +        if (errno || !end || (strcmp(end, "") != 0 && strcmp(end, "%") !=
> 0)) {
> +            goto format_error;
> +        }
> +        if (strcmp(end, "%") == 0) {
> +            clipping_coords[i].unit = COORDS_PERCENT;
> +            if (clipping_coords[i].value > 100) {
> +                goto format_error;
> +            }
> +        }
> +    }
> +    if (clipping_type_sign[0] == 'x') {
> +        clipping_type = COORDS_SIZE;
> +    } else {
> +        clipping_type = COORDS_BOX;
> +    }
> +    return;
> +
> +format_error:
> +    g_printerr("Invalid clipping format: %s\n", clipping);
> +    exit(1);
> +
> +}
> +
> +static void
> +compute_clipping_rect(GstSample *sample)
> +{
> +    GstCaps *caps = gst_sample_get_caps(sample);
> +    spice_assert(caps);
> +
> +    GstStructure *s = gst_caps_get_structure(caps, 0);
> +    spice_assert(s);
> +
> +    gint width, height;
> +    spice_assert(gst_structure_get_int(s, "width", &width) &&
> +                 gst_structure_get_int(s, "height", &height));
> +
> +    // transform from percent to pixel values
> +    int i;
> +    unsigned int coords[4];
> +    for (i = 0; i < 4; ++i) {
> +        unsigned int coord = coords[i] = clipping_coords[i].value;
> +        if (clipping_coords[i].unit != COORDS_PERCENT) {
> +            spice_assert(clipping_coords[i].unit == COORDS_NUMBER);
> +            continue;
> +        }
> +        coords[i] = coord * ((i&1) ? height : width) / 100;
> +    }
> +
> +    // transform from sized to box
> +    if (clipping_type == COORDS_SIZE) {
> +        coords[2] += coords[0];
> +        coords[3] += coords[1];
> +    }
> +
> +    // clip to sample
> +    coords[0] = MIN(coords[0], width);
> +    coords[1] = MIN(coords[1], height);
> +    coords[2] = MIN(coords[2], width);
> +    coords[3] = MIN(coords[3], height);
> +
> +    // check coordinated are valid
> +    spice_assert(coords[0] < coords[2]);
> +    spice_assert(coords[1] < coords[3]);
> +
> +    // set
> +    clipping_rect.left = coords[0];
> +    clipping_rect.top = coords[1];
> +    clipping_rect.right = coords[2];
> +    clipping_rect.bottom = coords[3];
> +    clipping_type_computed = TRUE;
> +}
> +
> +static const EncoderInfo *
> +get_encoder_info(const char *encoder_name)
> +{
> +    const EncoderInfo *info;
> +    for (info = encoder_infos; info->name; ++info) {
> +        if (strcmp(info->name, encoder_name) == 0) {
> +            return info;
> +        }
> +    }
> +    return NULL;
> +}
> +
> +static GstFlowReturn
> +new_sample(GstAppSink *gstappsink, gpointer test_pipeline)
> +{
> +    TestPipeline *pipeline = test_pipeline;
> +
> +    GstSample *sample = gst_app_sink_pull_sample(pipeline->appsink);
> +    if (sample) {
> +        pipeline->sample_proc(sample, pipeline->sample_param);
> +        gst_sample_unref(sample);
> +    }
> +    return GST_FLOW_OK;
> +}
> +
> +static GstBusSyncReply
> +handle_pipeline_message(GstBus *bus, GstMessage *msg, gpointer
> test_pipeline)
> +{
> +    TestPipeline *pipeline = (TestPipeline *) test_pipeline;
> +
> +    if (GST_MESSAGE_TYPE(msg) == GST_MESSAGE_EOS) {
> +        pthread_mutex_lock(&eos_mtx);
> +        pipeline->got_eos = TRUE;
> +        pthread_cond_signal(&eos_cond);
> +        pthread_mutex_unlock(&eos_mtx);
> +    }
> +    return GST_BUS_PASS;
> +}
> +
> +static TestPipeline*
> +create_pipeline(const char *desc, SampleProc sample_proc, void *param)
> +{
> +    TestPipeline *pipeline = spice_new0(TestPipeline, 1);
> +
> +    pipeline->sample_proc = sample_proc;
> +    pipeline->sample_param = param;
> +
> +    GError *err = NULL;
> +    pipeline->gst_pipeline = gst_parse_launch_full(desc, NULL,
> GST_PARSE_FLAG_FATAL_ERRORS, &err);
> +    if (!pipeline->gst_pipeline) {
> +        g_printerr("GStreamer error: %s\n", err->message);
> +        return NULL;
> +    }
> +
> +    pipeline->appsrc =
> GST_APP_SRC(gst_bin_get_by_name(GST_BIN(pipeline->gst_pipeline), "src"));
> +    pipeline->appsink =
> GST_APP_SINK(gst_bin_get_by_name(GST_BIN(pipeline->gst_pipeline), "sink"));
> +    if (!pipeline->appsink) {
> +        g_printerr("Appsync not found in pipeline: %s\n", desc);
> +        return NULL;
> +    }
> +
> +    GstAppSinkCallbacks appsink_cbs = { NULL, NULL, new_sample };
> +    gst_app_sink_set_callbacks(pipeline->appsink, &appsink_cbs, pipeline,
> NULL);
> +
> +    GstBus *bus = gst_element_get_bus(pipeline->gst_pipeline);
> +    gst_bus_set_sync_handler(bus, handle_pipeline_message, pipeline, NULL);
> +    gst_object_unref(bus);
> +
> +    if (gst_element_set_state(pipeline->gst_pipeline, GST_STATE_PLAYING) ==
> +        GST_STATE_CHANGE_FAILURE) {
> +        g_printerr("GStreamer error: Unable to set the pipeline to the
> playing state.\n");
> +        exit(1);
> +    }
> +
> +    return pipeline;
> +}
> +
> +static void
> +create_output_pipeline(const EncoderInfo *encoder, SampleProc sample_proc,
> void *param)
> +{
> +    gchar *desc =
> +        g_strdup_printf("appsrc name=src is-live=true format=time
> max-bytes=0 block=true "
> +                        "%s ! videoconvert ! appsink name=sink
> caps=video/x-raw,format=BGRx"
> +                        " sync=false drop=false", encoder->caps_dec);
> +
> +    TestPipeline *pipeline = create_pipeline(desc, sample_proc, param);
> +    if (!pipeline) {
> +        g_printerr("Error creating output pipeline: %s\n", desc);
> +        exit(1);
> +    }
> +    g_free(desc);
> +
> +    output_pipeline = pipeline;
> +}
> +
> +static void
> +create_input_pipeline(const char *input_pipeline_desc, SampleProc
> sample_proc, void *param)
> +{
> +    gchar *desc =
> +        g_strdup_printf("%s ! appsink name=sink
> caps=video/x-raw,format=BGRx"
> +                        " sync=false drop=false", input_pipeline_desc);
> +
> +    TestPipeline *pipeline = create_pipeline(desc, sample_proc, param);
> +    g_free(desc);
> +    if (!pipeline) {
> +        // TODO specific error
> +        g_printerr("Error creating input pipeline\n");
> +        exit(1);
> +    }
> +
> +    input_pipeline = pipeline;
> +}
> +
> +static void
> +video_buffer_release(VideoBuffer *video_buffer)
> +{
> +    video_buffer->free(video_buffer);
> +}
> +
> +static void
> +pipeline_send_raw_data(TestPipeline *pipeline, VideoBuffer *video_buffer)
> +{
> +    GstBuffer *buffer =
> +        gst_buffer_new_wrapped_full(GST_MEMORY_FLAG_PHYSICALLY_CONTIGUOUS,
> +                                    video_buffer->data, video_buffer->size,
> +                                    0, video_buffer->size,
> +                                    video_buffer, (void (*)(void*))
> video_buffer_release);
> +
> +    GST_BUFFER_DURATION(buffer) = GST_CLOCK_TIME_NONE;
> +    GST_BUFFER_DTS(buffer) = GST_CLOCK_TIME_NONE;
> +
> +    if (gst_app_src_push_buffer(pipeline->appsrc, buffer) != GST_FLOW_OK) {
> +        g_printerr("GStreamer error: unable to push frame of size %u\n",
> video_buffer->size);
> +        exit(1);
> +    }
> +}
> +
> +static void
> +pipeline_wait_eos(TestPipeline *pipeline)
> +{
> +    pthread_mutex_lock(&eos_mtx);
> +    while (!pipeline->got_eos) {
> +        pthread_cond_wait(&eos_cond, &eos_mtx);
> +    }
> +    pthread_mutex_unlock(&eos_mtx);
> +}
> +
> +static uint32_t
> +mock_get_roundtrip_ms(void *opaque)
> +{
> +    // TODO
> +    return 20;
> +}
> +
> +static uint32_t
> +mock_get_source_fps(void *opaque)
> +{
> +    // TODO
> +    return 10;
> +}
> +
> +static void
> +mock_update_client_playback_delay(void *opaque, uint32_t delay_ms)
> +{
> +    // TODO
> +}
> +
> +static VideoEncoderRateControlCbs rate_control_cbs = {
> +    .get_roundtrip_ms = mock_get_roundtrip_ms,
> +    .get_source_fps = mock_get_source_fps,
> +    .update_client_playback_delay = mock_update_client_playback_delay,
> +};
> +
> +static void
> +create_video_encoder(const EncoderInfo *encoder)
> +{
> +    spice_assert(encoder);
> +
> +    video_encoder = encoder->new_encoder(encoder->coded_type,
> starting_bit_rate, &rate_control_cbs,
> +                                         (bitmap_ref_t) frame_ref,
> (bitmap_unref_t) frame_unref);
> +    // TODO return not supported error
> +    spice_assert(video_encoder);
> +}
> +
> +static void
> +frame_ref(TestFrame *frame)
> +{
> +    g_atomic_int_inc(&frame->refs);
> +}
> +
> +static void
> +frame_unref(TestFrame *frame)
> +{
> +    if (!g_atomic_int_dec_and_test(&frame->refs)) {
> +        return;
> +    }
> +    bitmap_free(frame->bitmap);
> +    free(frame);
> +}
> +
> +static void
> +bitmap_free(SpiceBitmap *bitmap)
> +{
> +    if (!bitmap) {
> +        return;
> +    }
> +    spice_assert(!bitmap->palette);
> +    spice_assert(bitmap->data);
> +    spice_chunks_destroy(bitmap->data);
> +    free(bitmap);
> +}
> +
> +static SpiceChunks* chunks_alloc(uint32_t stride, uint32_t height, uint32_t
> split);
> +static uint8_t *bitmap_get_line(SpiceBitmap *bitmap, int y);
> +static uint32_t compute_stride(int width, SpiceBitmapFmt format);
> +typedef void convert_line_t(uint8_t *dest, const uint8_t *src, uint32_t
> width);
> +static convert_line_t convert_line16;
> +static convert_line_t convert_line24;
> +static convert_line_t convert_line32;
> +static convert_line_t *get_convert_line(SpiceBitmapFmt format);
> +
> +static SpiceBitmap *
> +gst_to_spice_bitmap(GstSample *sample)
> +{
> +    GstCaps *caps = gst_sample_get_caps(sample);
> +    spice_assert(caps);
> +
> +    GstStructure *s = gst_caps_get_structure(caps, 0);
> +    spice_assert(s);
> +
> +    gint width, height;
> +    spice_assert(gst_structure_get_int(s, "width", &width) &&
> +                 gst_structure_get_int(s, "height", &height));
> +
> +    SpiceBitmap *bitmap = spice_new0(SpiceBitmap, 1);
> +    bitmap->format = bitmap_format;
> +    bitmap->flags = top_down ? SPICE_BITMAP_FLAGS_TOP_DOWN : 0;
> +    bitmap->x = width;
> +    bitmap->y = height;
> +    bitmap->stride = compute_stride(width, bitmap->format);
> +    bitmap->data = chunks_alloc(bitmap->stride, height, image_split_lines);
> +
> +    GstBuffer *buffer = gst_sample_get_buffer(sample);
> +    GstMapInfo mapinfo;
> +    if (!gst_buffer_map(buffer, &mapinfo, GST_MAP_READ)) {
> +        spice_error("GStreamer error: could not map the buffer");
> +    }
> +
> +    // convert image
> +    gint y;
> +    convert_line_t *convert_line = get_convert_line(bitmap->format);
> +    for (y = 0; y < height; ++y) {
> +        convert_line(bitmap_get_line(bitmap, y),
> +                     mapinfo.data + y * width * 4,
> +                     width);
> +    }
> +    gst_buffer_unmap(buffer, &mapinfo);
> +    // TODO should we unref buffer ??
> +
> +    return bitmap;
> +}
> +
> +static uint32_t
> +compute_stride(int width, SpiceBitmapFmt format)
> +{
> +    spice_assert(width > 0);
> +
> +    switch (format) {
> +    case SPICE_BITMAP_FMT_16BIT:
> +        return width * 2;
> +    case SPICE_BITMAP_FMT_24BIT:
> +        return width * 3;
> +    case SPICE_BITMAP_FMT_32BIT:
> +    case SPICE_BITMAP_FMT_RGBA:
> +        return width * 4;
> +    default:
> +        break;
> +    }
> +    spice_assert(0);
> +    return 0;
> +}
> +
> +static SpiceChunks*
> +chunks_alloc(uint32_t stride, uint32_t height, uint32_t split)
> +{
> +    spice_assert(stride && height && split);
> +    const uint32_t num_chunks = (height + split - 1u) / split;
> +    SpiceChunks *chunks = spice_malloc0(sizeof(SpiceChunks) +
> sizeof(SpiceChunk) * num_chunks);
> +
> +    chunks->data_size = stride * height;
> +    chunks->num_chunks = num_chunks;
> +    chunks->flags = SPICE_CHUNKS_FLAGS_FREE;
> +    unsigned n;
> +    uint32_t allocated = 0;
> +    for (n = 0; n < num_chunks; ++n) {
> +        SpiceChunk *chunk = &chunks->chunk[n];
> +        uint32_t len = stride * split;
> +        spice_assert(chunks->data_size > allocated);
> +        len = MIN(len, chunks->data_size - allocated);
> +        chunk->data = spice_malloc0(len);
> +        chunk->len = len;
> +        allocated += len;
> +    }
> +    spice_assert(chunks->data_size == allocated);
> +    return chunks;
> +}
> +
> +static uint8_t *
> +bitmap_get_line(SpiceBitmap *bitmap, int y)
> +{
> +    spice_assert(bitmap && y >= 0 && y < bitmap->y);
> +    if (!(bitmap->flags & SPICE_BITMAP_FLAGS_TOP_DOWN)) {
> +        y = bitmap->y - y - 1;
> +    }
> +    const uint32_t stride = bitmap->stride;
> +    uint32_t pos = stride * y;
> +    SpiceChunk *chunk = &bitmap->data->chunk[0];
> +    while (pos >= chunk->len) {
> +        pos -= chunk->len;
> +        ++chunk;
> +        spice_assert(chunk <
> &bitmap->data->chunk[bitmap->data->num_chunks]);
> +    }
> +    spice_assert(pos + stride <= chunk->len);
> +    return chunk->data + pos;
> +}
> +
> +static convert_line_t *
> +get_convert_line(SpiceBitmapFmt format)
> +{
> +    switch (format) {
> +    case SPICE_BITMAP_FMT_16BIT:
> +        return convert_line16;
> +    case SPICE_BITMAP_FMT_24BIT:
> +        return convert_line24;
> +    case SPICE_BITMAP_FMT_32BIT:
> +    case SPICE_BITMAP_FMT_RGBA:
> +        return convert_line32;
> +    default:
> +        break;
> +    }
> +    spice_assert(0);
> +    return 0;
> +}
> +
> +static void
> +convert_line16(uint8_t *dest, const uint8_t *src, uint32_t width)
> +{
> +    uint16_t *dest16 = (uint16_t *) dest;
> +    for (; width; --width) {
> +        *dest16++ = (src[0] >> 3) | ((src[1] & 0xf8) << 2) | ((src[2] &
> 0xf8) << 7);
> +        src += 4;
> +    }
> +}
> +
> +static void
> +convert_line24(uint8_t *dest, const uint8_t *src, uint32_t width)
> +{
> +    for (; width; --width) {
> +        *dest++ = *src++;
> +        *dest++ = *src++;
> +        *dest++ = *src++;
> +        ++src;
> +    }
> +}
> +
> +static void
> +convert_line32(uint8_t *dest, const uint8_t *src, uint32_t width)
> +{
> +    for (; width; --width) {
> +        *dest++ = *src++;
> +        *dest++ = *src++;
> +        *dest++ = *src++;
> +        *dest++ = 0;
> +        ++src;
> +    }
> +}
> +
> +static SpiceBitmapFmt
> +get_bitmap_format(const char *format)
> +{
> +#define FMT(fmt) if (strcmp(format, #fmt) == 0) { return SPICE_BITMAP_FMT_
> ## fmt; }
> +    FMT(32BIT);
> +    FMT(24BIT);
> +    FMT(16BIT);
> +    FMT(RGBA);
> +#undef FMT
> +    return SPICE_BITMAP_FMT_INVALID;
> +}
> +
> +static TestFrame *
> +gst_to_spice_frame(GstSample *sample)
> +{
> +    TestFrame *frame = spice_new0(TestFrame, 1);
> +    frame->refs = 1;
> +    frame->bitmap = gst_to_spice_bitmap(sample);
> +    return frame;
> +}
> +
> +static uint32_t
> +line_diff_rgb(const uint8_t *pixel1, const uint8_t *pixel2, uint32_t w)
> +{
> +    uint32_t diff_sum = 0;
> +    for (w *= 3; w; --w) {
> +        int diff = *pixel1 - *pixel2;
> +        diff_sum += diff * diff;
> +        ++pixel1;
> +        ++pixel2;
> +    }
> +    return diff_sum;
> +}
> +
> +typedef uint8_t *bitmap_extract_rgb_line_t(SpiceBitmap *bitmap, uint8_t
> *buf,
> +                                           int32_t x, int32_t y, int32_t w);
> +static bitmap_extract_rgb_line_t *get_bitmap_extract(SpiceBitmapFmt format);
> +static bitmap_extract_rgb_line_t bitmap_extract16;
> +static bitmap_extract_rgb_line_t bitmap_extract24;
> +static bitmap_extract_rgb_line_t bitmap_extract32;
> +
> +// compute PSNR
> +// see https://en.wikipedia.org/wiki/Peak_signal-to-noise_ratio
> +// higher is better (less data loosed)
> +// typical are 30-50
> +static double
> +compute_psnr(SpiceBitmap *bitmap1, int32_t x1, int32_t y1,
> +             SpiceBitmap *bitmap2, int32_t x2, int32_t y2,
> +             int32_t w, int32_t h)
> +{
> +    spice_assert(x1 >= 0 && y1 >= 0);
> +    spice_assert(x2 >= 0 && y2 >= 0);
> +    spice_assert(w > 0 && h > 0);
> +    spice_assert(x1 + w <= bitmap1->x);
> +    spice_assert(y1 + h <= bitmap1->y);
> +    spice_assert(x2 + w <= bitmap2->x);
> +    spice_assert(y2 + h <= bitmap2->y);
> +
> +    int y;
> +    uint64_t diff_sum = 0;
> +    uint8_t pixels[2][w*3];
> +    bitmap_extract_rgb_line_t *extract1 =
> get_bitmap_extract(bitmap1->format);
> +    bitmap_extract_rgb_line_t *extract2 =
> get_bitmap_extract(bitmap2->format);
> +    for (y = 0; y < h; ++y) {
> +        uint8_t *line1 = extract1(bitmap1, pixels[0], x1, y1 + y, w);
> +        uint8_t *line2 = extract2(bitmap2, pixels[1], x2, y2 + y, w);
> +        diff_sum += line_diff_rgb(line1, line2, w);
> +    }
> +
> +    double mse = (double) diff_sum / (w*h*3);
> +    double psnr = 10 * log10(255*255/mse);
> +
> +    return psnr;
> +}
> +
> +static bitmap_extract_rgb_line_t *
> +get_bitmap_extract(SpiceBitmapFmt format)
> +{
> +    switch (format) {
> +    case SPICE_BITMAP_FMT_16BIT:
> +        return bitmap_extract16;
> +    case SPICE_BITMAP_FMT_24BIT:
> +        return bitmap_extract24;
> +    case SPICE_BITMAP_FMT_32BIT:
> +    case SPICE_BITMAP_FMT_RGBA:
> +        return bitmap_extract32;
> +    default:
> +        break;
> +    }
> +    spice_assert(0);
> +    return 0;
> +}
> +
> +static uint8_t *
> +bitmap_extract24(SpiceBitmap *bitmap, uint8_t *buf, int32_t x, int32_t y,
> int32_t w)
> +{
> +    uint8_t *line = bitmap_get_line(bitmap, y) + x * 3;
> +    return line;
> +}
> +
> +static uint8_t *
> +bitmap_extract32(SpiceBitmap *bitmap, uint8_t *buf, int32_t x, int32_t y,
> int32_t w)
> +{
> +    const uint8_t *line = bitmap_get_line(bitmap, y) + x * 4;
> +    uint8_t *dest = buf;
> +    for (; w; --w) {
> +        *dest++ = *line++;
> +        *dest++ = *line++;
> +        *dest++ = *line++;
> +        ++line;
> +    }
> +    return buf;
> +}
> +
> +static uint8_t *
> +bitmap_extract16(SpiceBitmap *bitmap, uint8_t *buf, int32_t x, int32_t y,
> int32_t w)
> +{
> +    const uint16_t *line = (const uint16_t *)(bitmap_get_line(bitmap, y) + x
> * 2);
> +    uint8_t *dest = buf;
> +    for (; w; --w) {
> +        uint16_t pixel = *line++;
> +        uint8_t comp;
> +        comp = (pixel >> 0) & 0x1f;
> +        *dest++ = (comp << 3) | (comp >> 2);
> +        comp = (pixel >> 5) & 0x1f;
> +        *dest++ = (comp << 3) | (comp >> 2);
> +        comp = (pixel >> 10) & 0x1f;
> +        *dest++ = (comp << 3) | (comp >> 2);
> +    }
> +    return buf;
> +}
> --
> 2.7.4
> 
> 
_______________________________________________
Spice-devel mailing list
Spice-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/spice-devel




[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]     [Monitors]