fate: add api-band-test

Works only for flv, h263 and huffyuv decoders.
Makes only one pass through the file (this should be changed to two passes)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

tests/api/Makefile

 APITESTPROGS-$(call ENCDEC, FLAC, FLAC) += api-flac
 APITESTPROGS-$(call DEMDEC, H264, H264) += api-h264
 APITESTPROGS-yes += api-seek
+APITESTPROGS-$(call DEMDEC, H263, H263) += api-band
 APITESTPROGS += $(APITESTPROGS-yes)
 
 APITESTOBJS  := $(APITESTOBJS:%=$(APITESTSDIR)%) $(APITESTPROGS:%=$(APITESTSDIR)/%-test.o)

tests/api/api-band-test.c

+/*
+ * Copyright (c) 2015 Ludmila Glinskih
+ *
+ * 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.
+ */
+
+/**
+ * draw_horiz_band test.
+ */
+
+#include "libavutil/adler32.h"
+#include "libavcodec/avcodec.h"
+#include "libavformat/avformat.h"
+#include "libavutil/imgutils.h"
+
+uint8_t *slice_byte_buffer;
+uint8_t slice_byte_buffer_size;
+int draw_horiz_band_called;
+
+static void draw_horiz_band(AVCodecContext *ctx, const AVFrame *fr, int offset[4],
+                            int slice_position, int type, int height)
+{
+    int i;
+    const AVPixFmtDescriptor *pix_fmt_desc;
+    int chroma_w, chroma_h;
+    int shift_slice_position;
+    int shift_height;
+
+    draw_horiz_band_called = 1;
+
+    pix_fmt_desc = av_pix_fmt_desc_get(ctx->pix_fmt);
+    chroma_w = -((-ctx->width) >> pix_fmt_desc->log2_chroma_w);
+    chroma_h = -((-height) >> pix_fmt_desc->log2_chroma_h);
+    shift_slice_position = -((-slice_position) >> pix_fmt_desc->log2_chroma_h);
+    shift_height = -((-ctx->height) >> pix_fmt_desc->log2_chroma_h);
+
+    for (i = 0; i < height; i++) {
+        memcpy(slice_byte_buffer + ctx->width * slice_position + i * ctx->width,
+               fr->data[0] + offset[0] + i * fr->linesize[0], ctx->width);
+    }
+    for (i = 0; i < chroma_h; i++) {
+        memcpy(slice_byte_buffer + ctx->width * ctx->height + chroma_w * shift_slice_position + i * chroma_w,
+               fr->data[1] + offset[1] + i * fr->linesize[1], chroma_w);
+    }
+    for (i = 0; i < chroma_h; i++) {
+        memcpy(slice_byte_buffer + ctx->width * ctx->height + chroma_w * shift_height + chroma_w * shift_slice_position + i * chroma_w,
+               fr->data[2] + offset[2] + i * fr->linesize[2], chroma_w);
+    }
+}
+
+static int video_decode(const char *input_filename)
+{
+    AVCodec *codec = NULL;
+    AVCodecContext *origin_ctx = NULL, *ctx= NULL;
+    uint8_t *byte_buffer = NULL;
+    AVFrame *fr = NULL;
+    AVPacket pkt;
+    AVFormatContext *fmt_ctx = NULL;
+    int number_of_written_bytes;
+    int video_stream;
+    int got_frame = 0;
+    int byte_buffer_size;
+    int result;
+    int end_of_stream = 0;
+
+    draw_horiz_band_called = 0;
+
+    result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL);
+    if (result < 0) {
+        av_log(NULL, AV_LOG_ERROR, "Can't open file\n");
+        return result;
+    }
+
+    result = avformat_find_stream_info(fmt_ctx, NULL);
+    if (result < 0) {
+        av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n");
+        return result;
+    }
+
+    video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
+    if (video_stream < 0) {
+      av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n");
+      return -1;
+    }
+
+    origin_ctx = fmt_ctx->streams[video_stream]->codec;
+
+    codec = avcodec_find_decoder(origin_ctx->codec_id);
+    if (!codec) {
+        av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
+        return -1;
+    }
+
+    ctx = avcodec_alloc_context3(codec);
+    if (!ctx) {
+        av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n");
+        return AVERROR(ENOMEM);
+    }
+
+    result = avcodec_copy_context(ctx, origin_ctx);
+    if (result) {
+        av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n");
+        return result;
+    }
+
+    ctx->draw_horiz_band = draw_horiz_band;
+    ctx->thread_count = 1;
+
+    result = avcodec_open2(ctx, codec, NULL);
+    if (result < 0) {
+        av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
+        return result;
+    }
+
+    fr = av_frame_alloc();
+    if (!fr) {
+        av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n");
+        return AVERROR(ENOMEM);
+    }
+
+    if (strcmp(codec->name, "flv") && strcmp(codec->name, "mpeg4") && strcmp(codec->name, "huffyuv")) {
+        av_log(NULL, AV_LOG_ERROR, "Wrong codec\n");
+        return -1;
+    }
+
+    byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 32);
+    byte_buffer = av_malloc(byte_buffer_size);
+    if (!byte_buffer) {
+        av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n");
+        return AVERROR(ENOMEM);
+    }
+
+    slice_byte_buffer = av_malloc(byte_buffer_size);
+    if (!slice_byte_buffer) {
+        av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n");
+        return AVERROR(ENOMEM);
+    }
+    memset(slice_byte_buffer, 0, byte_buffer_size);
+    slice_byte_buffer_size = byte_buffer_size;
+
+    av_init_packet(&pkt);
+    do {
+        if (!end_of_stream) {
+            if (av_read_frame(fmt_ctx, &pkt) < 0) {
+                end_of_stream = 1;
+            }
+        }
+        if (end_of_stream) {
+            pkt.data = NULL;
+            pkt.size = 0;
+        }
+        if (pkt.stream_index == video_stream || end_of_stream) {
+            got_frame = 0;
+            result = avcodec_decode_video2(ctx, fr, &got_frame, &pkt);
+            if (result < 0) {
+                av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n");
+                return result;
+            }
+            if (got_frame) {
+                number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size,
+                                        (const uint8_t* const *)fr->data, (const int*) fr->linesize,
+                                        ctx->pix_fmt, ctx->width, ctx->height, 1);
+                if (number_of_written_bytes < 0) {
+                    av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n");
+                    return number_of_written_bytes;
+                }
+                if (draw_horiz_band_called == 0) {
+                    av_log(NULL, AV_LOG_ERROR, "draw_horiz_band haven't been called!\n");
+                    return -1;
+                }
+                if (av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes) !=
+                    av_adler32_update(0, (const uint8_t*)slice_byte_buffer, number_of_written_bytes)) {
+                    av_log(NULL, AV_LOG_ERROR, "Decoded frames with and without draw_horiz_band are not the same!\n");
+                    return -1;
+                }
+            }
+            av_free_packet(&pkt);
+            av_init_packet(&pkt);
+        }
+    } while (!end_of_stream || got_frame);
+
+    av_free_packet(&pkt);
+    av_frame_free(&fr);
+    avcodec_close(ctx);
+    avformat_close_input(&fmt_ctx);
+    avcodec_free_context(&ctx);
+    av_freep(&byte_buffer);
+    av_freep(&slice_byte_buffer);
+    return 0;
+}
+
+int main(int argc, char **argv)
+{
+    if (argc < 2)
+    {
+        av_log(NULL, AV_LOG_ERROR, "Incorrect input: expected %s <name of a video file>\nNote that test works only for huffyuv, flv and mpeg4 decoders\n", argv[0]);
+        return 1;
+    }
+
+    av_register_all();
+
+    if (video_decode(argv[1]) != 0)
+        return 1;
+
+    return 0;
+}

tests/fate/api.mak

@@ -4,6 +4,12 @@ fate-api-flac: CMD = run $(APITESTSDIR)/api-flac-test
 fate-api-flac: CMP = null
 fate-api-flac: REF = /dev/null
 
+FATE_API_SAMPLES_LIBAVFORMAT-$(call DEMDEC, FLV, FLV) += fate-api-band
+fate-api-band: $(APITESTSDIR)/api-band-test$(EXESUF)
+fate-api-band: CMD = run $(APITESTSDIR)/api-band-test $(TARGET_SAMPLES)/mpeg4/resize_down-up.h263
+fate-api-band: CMP = null
+fate-api-band: REF = /dev/null
+
 FATE_API_SAMPLES_LIBAVFORMAT-$(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