/* * 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 *ctx= NULL; AVCodecParameters *origin_par = 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_par = fmt_ctx->streams[video_stream]->codecpar; codec = avcodec_find_decoder(origin_par->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_parameters_to_context(ctx, origin_par); 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_packet_unref(&pkt); av_init_packet(&pkt); } } while (!end_of_stream || got_frame); av_packet_unref(&pkt); av_frame_free(&fr); 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; } if (video_decode(argv[1]) != 0) return 1; return 0; }