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https://github.com/FFmpeg/FFmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
285 lines
9.7 KiB
C
285 lines
9.7 KiB
C
/*
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* Copyright (c) 2015 Ludmila Glinskih
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* Copyright (c) 2001 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/*
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* FLAC codec test.
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* Encodes raw data to FLAC format and decodes it back to raw. Compares raw-data
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* after that.
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*/
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#include "libavcodec/avcodec.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/common.h"
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#include "libavutil/mem.h"
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#include "libavutil/samplefmt.h"
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#define NUMBER_OF_AUDIO_FRAMES 200
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#define NAME_BUFF_SIZE 100
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/* generate i-th frame of test audio */
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static int generate_raw_frame(uint16_t *frame_data, int i, int sample_rate,
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int channels, int frame_size)
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{
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int j, k;
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for (j = 0; j < frame_size; j++) {
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frame_data[channels * j] = 10000 * ((j / 10 * i) % 2);
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for (k = 1; k < channels; k++)
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frame_data[channels * j + k] = frame_data[channels * j] * (k + 1);
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}
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return 0;
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}
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static int init_encoder(const AVCodec *enc, AVCodecContext **enc_ctx,
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const AVChannelLayout *ch_layout, int sample_rate)
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{
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AVCodecContext *ctx;
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int result;
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char name_buff[NAME_BUFF_SIZE];
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av_channel_layout_describe(ch_layout, name_buff, NAME_BUFF_SIZE);
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av_log(NULL, AV_LOG_INFO, "channel layout: %s, sample rate: %i\n", name_buff, sample_rate);
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ctx = avcodec_alloc_context3(enc);
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if (!ctx) {
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av_log(NULL, AV_LOG_ERROR, "Can't allocate encoder context\n");
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return AVERROR(ENOMEM);
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}
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ctx->sample_fmt = AV_SAMPLE_FMT_S16;
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ctx->sample_rate = sample_rate;
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av_channel_layout_copy(&ctx->ch_layout, ch_layout);
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result = avcodec_open2(ctx, enc, NULL);
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if (result < 0) {
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av_log(ctx, AV_LOG_ERROR, "Can't open encoder\n");
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return result;
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}
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*enc_ctx = ctx;
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return 0;
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}
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static int init_decoder(const AVCodec *dec, AVCodecContext **dec_ctx,
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const AVChannelLayout *ch_layout)
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{
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AVCodecContext *ctx;
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int result;
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ctx = avcodec_alloc_context3(dec);
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if (!ctx) {
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av_log(NULL, AV_LOG_ERROR , "Can't allocate decoder context\n");
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return AVERROR(ENOMEM);
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}
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ctx->request_sample_fmt = AV_SAMPLE_FMT_S16;
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av_channel_layout_copy(&ctx->ch_layout, ch_layout);
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result = avcodec_open2(ctx, dec, NULL);
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if (result < 0) {
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av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
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return result;
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}
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*dec_ctx = ctx;
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return 0;
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}
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static int run_test(const AVCodec *enc, const AVCodec *dec,
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AVCodecContext *enc_ctx, AVCodecContext *dec_ctx)
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{
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AVPacket *enc_pkt;
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AVFrame *in_frame, *out_frame;
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uint8_t *raw_in = NULL, *raw_out = NULL;
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int in_offset = 0, out_offset = 0;
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int result = 0;
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int i = 0;
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int in_frame_bytes, out_frame_bytes;
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enc_pkt = av_packet_alloc();
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if (!enc_pkt) {
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av_log(NULL, AV_LOG_ERROR, "Can't allocate output packet\n");
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return AVERROR(ENOMEM);
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}
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in_frame = av_frame_alloc();
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if (!in_frame) {
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av_log(NULL, AV_LOG_ERROR, "Can't allocate input frame\n");
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return AVERROR(ENOMEM);
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}
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in_frame->nb_samples = enc_ctx->frame_size;
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in_frame->format = enc_ctx->sample_fmt;
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result = av_channel_layout_copy(&in_frame->ch_layout, &enc_ctx->ch_layout);
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if (result < 0)
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return result;
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if (av_frame_get_buffer(in_frame, 0) != 0) {
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av_log(NULL, AV_LOG_ERROR, "Can't allocate a buffer for input frame\n");
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return AVERROR(ENOMEM);
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}
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out_frame = av_frame_alloc();
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if (!out_frame) {
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av_log(NULL, AV_LOG_ERROR, "Can't allocate output frame\n");
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return AVERROR(ENOMEM);
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}
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raw_in = av_malloc(in_frame->linesize[0] * NUMBER_OF_AUDIO_FRAMES);
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if (!raw_in) {
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av_log(NULL, AV_LOG_ERROR, "Can't allocate memory for raw_in\n");
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return AVERROR(ENOMEM);
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}
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raw_out = av_malloc(in_frame->linesize[0] * NUMBER_OF_AUDIO_FRAMES);
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if (!raw_out) {
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av_log(NULL, AV_LOG_ERROR, "Can't allocate memory for raw_out\n");
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return AVERROR(ENOMEM);
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}
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for (i = 0; i < NUMBER_OF_AUDIO_FRAMES; i++) {
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result = av_frame_make_writable(in_frame);
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if (result < 0)
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return result;
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generate_raw_frame((uint16_t*)(in_frame->data[0]), i, enc_ctx->sample_rate,
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enc_ctx->ch_layout.nb_channels, enc_ctx->frame_size);
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in_frame_bytes = in_frame->nb_samples * in_frame->ch_layout.nb_channels * sizeof(uint16_t);
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if (in_frame_bytes > in_frame->linesize[0]) {
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av_log(NULL, AV_LOG_ERROR, "Incorrect value of input frame linesize\n");
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return 1;
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}
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memcpy(raw_in + in_offset, in_frame->data[0], in_frame_bytes);
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in_offset += in_frame_bytes;
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result = avcodec_send_frame(enc_ctx, in_frame);
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if (result < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error submitting a frame for encoding\n");
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return result;
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}
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while (result >= 0) {
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result = avcodec_receive_packet(enc_ctx, enc_pkt);
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if (result == AVERROR(EAGAIN))
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break;
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else if (result < 0 && result != AVERROR_EOF) {
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av_log(NULL, AV_LOG_ERROR, "Error encoding audio frame\n");
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return result;
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}
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/* if we get an encoded packet, feed it straight to the decoder */
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result = avcodec_send_packet(dec_ctx, enc_pkt);
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av_packet_unref(enc_pkt);
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if (result < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
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return result;
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}
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result = avcodec_receive_frame(dec_ctx, out_frame);
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if (result == AVERROR(EAGAIN)) {
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result = 0;
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continue;
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} else if (result == AVERROR(EOF)) {
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result = 0;
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break;
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} else if (result < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error decoding audio packet\n");
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return result;
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}
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if (in_frame->nb_samples != out_frame->nb_samples) {
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av_log(NULL, AV_LOG_ERROR, "Error frames before and after decoding has different number of samples\n");
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return AVERROR_UNKNOWN;
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}
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if (av_channel_layout_compare(&in_frame->ch_layout, &out_frame->ch_layout)) {
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av_log(NULL, AV_LOG_ERROR, "Error frames before and after decoding has different channel layout\n");
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return AVERROR_UNKNOWN;
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}
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if (in_frame->format != out_frame->format) {
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av_log(NULL, AV_LOG_ERROR, "Error frames before and after decoding has different sample format\n");
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return AVERROR_UNKNOWN;
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}
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out_frame_bytes = out_frame->nb_samples * out_frame->ch_layout.nb_channels * sizeof(uint16_t);
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if (out_frame_bytes > out_frame->linesize[0]) {
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av_log(NULL, AV_LOG_ERROR, "Incorrect value of output frame linesize\n");
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return 1;
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}
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memcpy(raw_out + out_offset, out_frame->data[0], out_frame_bytes);
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out_offset += out_frame_bytes;
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}
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}
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if (memcmp(raw_in, raw_out, out_frame_bytes * NUMBER_OF_AUDIO_FRAMES) != 0) {
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av_log(NULL, AV_LOG_ERROR, "Output differs\n");
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return 1;
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}
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av_log(NULL, AV_LOG_INFO, "OK\n");
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av_freep(&raw_in);
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av_freep(&raw_out);
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av_packet_free(&enc_pkt);
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av_frame_free(&in_frame);
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av_frame_free(&out_frame);
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return 0;
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}
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int main(void)
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{
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const AVCodec *enc = NULL, *dec = NULL;
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AVCodecContext *enc_ctx = NULL, *dec_ctx = NULL;
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const AVChannelLayout channel_layouts[] = { AV_CHANNEL_LAYOUT_STEREO,
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AV_CHANNEL_LAYOUT_5POINT1_BACK,
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AV_CHANNEL_LAYOUT_SURROUND,
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AV_CHANNEL_LAYOUT_STEREO_DOWNMIX };
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int sample_rates[] = {8000, 44100, 48000, 192000};
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int cl, sr;
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enc = avcodec_find_encoder(AV_CODEC_ID_FLAC);
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if (!enc) {
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av_log(NULL, AV_LOG_ERROR, "Can't find encoder\n");
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return 1;
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}
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dec = avcodec_find_decoder(AV_CODEC_ID_FLAC);
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if (!dec) {
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av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
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return 1;
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}
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for (cl = 0; cl < FF_ARRAY_ELEMS(channel_layouts); cl++) {
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for (sr = 0; sr < FF_ARRAY_ELEMS(sample_rates); sr++) {
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if (init_encoder(enc, &enc_ctx, &channel_layouts[cl], sample_rates[sr]) != 0)
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return 1;
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if (init_decoder(dec, &dec_ctx, &channel_layouts[cl]) != 0)
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return 1;
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if (run_test(enc, dec, enc_ctx, dec_ctx) != 0)
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return 1;
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avcodec_free_context(&enc_ctx);
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avcodec_free_context(&dec_ctx);
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}
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}
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return 0;
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}
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