fate: add api-h264-slice test

This test ensures that you are able to send N number of slice NALUs in slice threaded mode to be decoded simultaneously

tests/api/Makefile

 APITESTPROGS-$(call ENCDEC, FLAC, FLAC) += api-flac
 APITESTPROGS-$(call DEMDEC, H264, H264) += api-h264
+APITESTPROGS-$(call DEMDEC, H264, H264) += api-h264-slice
 APITESTPROGS-yes += api-seek
 APITESTPROGS-yes += api-codec-param
 APITESTPROGS-$(call DEMDEC, H263, H263) += api-band

tests/api/api-h264-slice-test.c

+/*
+ * Copyright (c) 2001 Fabrice Bellard
+ *
+ * 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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+#define MAX_SLICES 8
+
+// ./fate 2 ./crew_cif out.y4m
+
+#include "config.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if HAVE_IO_H
+#include <io.h>
+#endif
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "libavformat/network.h"
+#include "libavcodec/avcodec.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/hash.h"
+
+static int header = 0;
+
+static void decode(AVCodecContext *dec_ctx, AVFrame *frame,
+           AVPacket *pkt)
+{
+    static uint64_t frame_cnt = 0;
+    int ret;
+
+    ret = avcodec_send_packet(dec_ctx, pkt);
+    if (ret < 0) {
+        fprintf(stderr, "Error sending a packet for decoding: %s\n", av_err2str(ret));
+        exit(1);
+    }
+
+    while (ret >= 0) {
+        const AVPixFmtDescriptor *desc;
+        char *sum;
+        struct AVHashContext *hash;
+
+        ret = avcodec_receive_frame(dec_ctx, frame);
+        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
+            return;
+        } else if (ret < 0) {
+            fprintf(stderr, "Error during decoding: %s\n", av_err2str(ret));
+            exit(1);
+        }
+
+        if (!header) {
+            printf(
+            "#format: frame checksums\n"
+            "#version: 2\n"
+            "#hash: MD5\n"
+            "#tb 0: 1/30\n"
+            "#media_type 0: video\n"
+            "#codec_id 0: rawvideo\n"
+            "#dimensions 0: 352x288\n"
+            "#sar 0: 128/117\n"
+            "#stream#, dts,        pts, duration,     size, hash\n");
+            header = 1;
+        }
+        desc = av_pix_fmt_desc_get(dec_ctx->pix_fmt);
+        av_hash_alloc(&hash, "md5");
+        av_hash_init(hash);
+        sum = av_mallocz(av_hash_get_size(hash) * 2 + 1);
+
+        for (int i = 0; i < frame->height; i++)
+            av_hash_update(hash, &frame->data[0][i * frame->linesize[0]], frame->width);
+        for (int i = 0; i < frame->height >> desc->log2_chroma_h; i++)
+            av_hash_update(hash, &frame->data[1][i * frame->linesize[1]], frame->width >> desc->log2_chroma_w);
+        for (int i = 0; i < frame->height >> desc->log2_chroma_h; i++)
+            av_hash_update(hash, &frame->data[2][i * frame->linesize[2]], frame->width >> desc->log2_chroma_w);
+
+        av_hash_final_hex(hash, sum, av_hash_get_size(hash) * 2 + 1);
+        printf("0, %10"PRId64", %10"PRId64",        1, %8d, %s\n",
+            frame_cnt, frame_cnt,
+            (frame->width * frame->height + 2 * (frame->height >> desc->log2_chroma_h) * (frame->width >> desc->log2_chroma_w)), sum);
+        frame_cnt += 1;
+        av_free(hash);
+        av_free(sum);
+    }
+}
+
+int main(int argc, char **argv)
+{
+    const AVCodec *codec;
+    AVCodecContext *c = NULL;
+    AVFrame *frame;
+    unsigned int threads;
+    AVPacket *pkt;
+    FILE *fd;
+    char nal[MAX_SLICES * UINT16_MAX + AV_INPUT_BUFFER_PADDING_SIZE];
+    int nals = 0;
+    char *p = nal;
+
+    if (argc < 4) {
+        fprintf(stderr, "Usage: %s <threads> <input file> <output file>\n", argv[0]);
+        exit(1);
+    }
+
+    if (!(threads = strtoul(argv[1], NULL, 0)))
+        threads = 1;
+    else if (threads > MAX_SLICES)
+        threads = MAX_SLICES;
+
+#ifdef _WIN32
+    setmode(fileno(stdout), O_BINARY);
+#endif
+
+    if (!(pkt = av_packet_alloc()))
+        exit(1);
+
+    if (!(codec = avcodec_find_decoder(AV_CODEC_ID_H264))) {
+        fprintf(stderr, "Codec not found\n");
+        exit(1);
+    }
+
+    if (!(c = avcodec_alloc_context3(codec))) {
+        fprintf(stderr, "Could not allocate video codec context\n");
+        exit(1);
+    }
+
+    c->width  = 352;
+    c->height = 288;
+
+    c->flags2 |= AV_CODEC_FLAG2_CHUNKS;
+    c->thread_type = FF_THREAD_SLICE;
+    c->thread_count = threads;
+
+    if (avcodec_open2(c, codec, NULL) < 0) {
+        fprintf(stderr, "Could not open codec\n");
+        exit(1);
+    }
+
+#if HAVE_THREADS
+    if (c->active_thread_type != FF_THREAD_SLICE) {
+        fprintf(stderr, "Couldn't activate slice threading: %d\n", c->active_thread_type);
+        exit(1);
+    }
+#else
+    fprintf(stderr, "WARN: not using threads, only checking decoding slice NALUs\n");
+#endif
+
+    if (!(frame = av_frame_alloc())) {
+        fprintf(stderr, "Could not allocate video frame\n");
+        exit(1);
+    }
+
+    if (!(fd = fopen(argv[2], "rb"))) {
+        fprintf(stderr, "Couldn't open NALU file: %s\n", argv[2]);
+        exit(1);
+    }
+
+    while(1) {
+        uint16_t size = 0;
+        ssize_t ret = fread(&size, 1, sizeof(uint16_t), fd);
+        if (ret < 0) {
+            perror("Couldn't read size");
+            exit(1);
+        } else if (ret != sizeof(uint16_t))
+            break;
+        size = ntohs(size);
+        ret = fread(p, 1, size, fd);
+        if (ret < 0 || ret != size) {
+            perror("Couldn't read data");
+            exit(1);
+        }
+        p += ret;
+
+        if (++nals >= threads) {
+            pkt->data = nal;
+            pkt->size = p - nal;
+            decode(c, frame, pkt);
+            memset(nal, 0, MAX_SLICES * UINT16_MAX + AV_INPUT_BUFFER_PADDING_SIZE);
+            nals = 0;
+            p = nal;
+        }
+    }
+
+    if (nals) {
+        pkt->data = nal;
+        pkt->size = p - nal;
+        decode(c, frame, pkt);
+    }
+
+    decode(c, frame, NULL);
+
+    fclose(fd);
+    avcodec_free_context(&c);
+    av_frame_free(&frame);
+    av_packet_free(&pkt);
+
+    return 0;
+}

tests/fate/api.mak

@@ -12,6 +12,10 @@ FATE_API_SAMPLES_LIBAVFORMAT-$(call DEMDEC, H264, H264) += fate-api-h264
 fate-api-h264: $(APITESTSDIR)/api-h264-test$(EXESUF)
 fate-api-h264: CMD = run $(APITESTSDIR)/api-h264-test $(TARGET_SAMPLES)/h264-conformance/SVA_NL2_E.264
 
+FATE_API_SAMPLES_LIBAVFORMAT-$(call DEMDEC, H264, H264) += fate-api-h264-slice
+fate-api-h264-slice: $(APITESTSDIR)/api-h264-slice-test$(EXESUF)
+fate-api-h264-slice: CMD = run $(APITESTSDIR)/api-h264-slice-test 2 $(TARGET_SAMPLES)/h264/crew_cif.nal api-h264-slice.h264
+
 FATE_API_LIBAVFORMAT-$(call DEMDEC, FLV, FLV) += fate-api-seek
 fate-api-seek: $(APITESTSDIR)/api-seek-test$(EXESUF) fate-lavf-flv_fmt
 fate-api-seek: CMD = run $(APITESTSDIR)/api-seek-test $(TARGET_PATH)/tests/data/lavf/lavf.flv 0 720