diff options
Diffstat (limited to 'libavcodec/mediacodecdec.c')
| -rw-r--r-- | libavcodec/mediacodecdec.c | 618 |
1 files changed, 618 insertions, 0 deletions
diff --git a/libavcodec/mediacodecdec.c b/libavcodec/mediacodecdec.c new file mode 100644 index 0000000..363e124 --- /dev/null +++ b/libavcodec/mediacodecdec.c @@ -0,0 +1,618 @@ +/* + * Android MediaCodec MPEG-2 / H.264 / H.265 / MPEG-4 / VP8 / VP9 decoders + * + * Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.com> + * + * This file is part of FFmpeg. + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> +#include <string.h> + +#include "libavutil/avassert.h" +#include "libavutil/common.h" +#include "libavutil/opt.h" +#include "libavutil/intreadwrite.h" +#include "libavutil/pixfmt.h" + +#include "avcodec.h" +#include "decode.h" +#include "h264_parse.h" +#include "hevc_parse.h" +#include "hwaccel.h" +#include "internal.h" +#include "mediacodec_wrapper.h" +#include "mediacodecdec_common.h" + +typedef struct MediaCodecH264DecContext { + + MediaCodecDecContext *ctx; + + AVPacket buffered_pkt; + +} MediaCodecH264DecContext; + +static av_cold int mediacodec_decode_close(AVCodecContext *avctx) +{ + MediaCodecH264DecContext *s = avctx->priv_data; + + ff_mediacodec_dec_close(avctx, s->ctx); + s->ctx = NULL; + + av_packet_unref(&s->buffered_pkt); + + return 0; +} + +#if CONFIG_H264_MEDIACODEC_DECODER || CONFIG_HEVC_MEDIACODEC_DECODER +static int h2645_ps_to_nalu(const uint8_t *src, int src_size, uint8_t **out, int *out_size) +{ + int i; + int ret = 0; + uint8_t *p = NULL; + static const uint8_t nalu_header[] = { 0x00, 0x00, 0x00, 0x01 }; + + if (!out || !out_size) { + return AVERROR(EINVAL); + } + + p = av_malloc(sizeof(nalu_header) + src_size); + if (!p) { + return AVERROR(ENOMEM); + } + + *out = p; + *out_size = sizeof(nalu_header) + src_size; + + memcpy(p, nalu_header, sizeof(nalu_header)); + memcpy(p + sizeof(nalu_header), src, src_size); + + /* Escape 0x00, 0x00, 0x0{0-3} pattern */ + for (i = 4; i < *out_size; i++) { + if (i < *out_size - 3 && + p[i + 0] == 0 && + p[i + 1] == 0 && + p[i + 2] <= 3) { + uint8_t *new; + + *out_size += 1; + new = av_realloc(*out, *out_size); + if (!new) { + ret = AVERROR(ENOMEM); + goto done; + } + *out = p = new; + + i = i + 2; + memmove(p + i + 1, p + i, *out_size - (i + 1)); + p[i] = 0x03; + } + } +done: + if (ret < 0) { + av_freep(out); + *out_size = 0; + } + + return ret; +} +#endif + +#if CONFIG_H264_MEDIACODEC_DECODER +static int h264_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format) +{ + int i; + int ret; + + H264ParamSets ps; + const PPS *pps = NULL; + const SPS *sps = NULL; + int is_avc = 0; + int nal_length_size = 0; + + memset(&ps, 0, sizeof(ps)); + + ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size, + &ps, &is_avc, &nal_length_size, 0, avctx); + if (ret < 0) { + goto done; + } + + for (i = 0; i < MAX_PPS_COUNT; i++) { + if (ps.pps_list[i]) { + pps = (const PPS*)ps.pps_list[i]->data; + break; + } + } + + if (pps) { + if (ps.sps_list[pps->sps_id]) { + sps = (const SPS*)ps.sps_list[pps->sps_id]->data; + } + } + + if (pps && sps) { + uint8_t *data = NULL; + int data_size = 0; + + if ((ret = h2645_ps_to_nalu(sps->data, sps->data_size, &data, &data_size)) < 0) { + goto done; + } + ff_AMediaFormat_setBuffer(format, "csd-0", (void*)data, data_size); + av_freep(&data); + + if ((ret = h2645_ps_to_nalu(pps->data, pps->data_size, &data, &data_size)) < 0) { + goto done; + } + ff_AMediaFormat_setBuffer(format, "csd-1", (void*)data, data_size); + av_freep(&data); + } else { + av_log(avctx, AV_LOG_ERROR, "Could not extract PPS/SPS from extradata"); + ret = AVERROR_INVALIDDATA; + } + +done: + ff_h264_ps_uninit(&ps); + + return ret; +} +#endif + +#if CONFIG_HEVC_MEDIACODEC_DECODER +static int hevc_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format) +{ + int i; + int ret; + + HEVCParamSets ps; + HEVCSEI sei; + + const HEVCVPS *vps = NULL; + const HEVCPPS *pps = NULL; + const HEVCSPS *sps = NULL; + int is_nalff = 0; + int nal_length_size = 0; + + uint8_t *vps_data = NULL; + uint8_t *sps_data = NULL; + uint8_t *pps_data = NULL; + int vps_data_size = 0; + int sps_data_size = 0; + int pps_data_size = 0; + + memset(&ps, 0, sizeof(ps)); + memset(&sei, 0, sizeof(sei)); + + ret = ff_hevc_decode_extradata(avctx->extradata, avctx->extradata_size, + &ps, &sei, &is_nalff, &nal_length_size, 0, 1, avctx); + if (ret < 0) { + goto done; + } + + for (i = 0; i < HEVC_MAX_VPS_COUNT; i++) { + if (ps.vps_list[i]) { + vps = (const HEVCVPS*)ps.vps_list[i]->data; + break; + } + } + + for (i = 0; i < HEVC_MAX_PPS_COUNT; i++) { + if (ps.pps_list[i]) { + pps = (const HEVCPPS*)ps.pps_list[i]->data; + break; + } + } + + if (pps) { + if (ps.sps_list[pps->sps_id]) { + sps = (const HEVCSPS*)ps.sps_list[pps->sps_id]->data; + } + } + + if (vps && pps && sps) { + uint8_t *data; + int data_size; + + if ((ret = h2645_ps_to_nalu(vps->data, vps->data_size, &vps_data, &vps_data_size)) < 0 || + (ret = h2645_ps_to_nalu(sps->data, sps->data_size, &sps_data, &sps_data_size)) < 0 || + (ret = h2645_ps_to_nalu(pps->data, pps->data_size, &pps_data, &pps_data_size)) < 0) { + goto done; + } + + data_size = vps_data_size + sps_data_size + pps_data_size; + data = av_mallocz(data_size); + if (!data) { + ret = AVERROR(ENOMEM); + goto done; + } + + memcpy(data , vps_data, vps_data_size); + memcpy(data + vps_data_size , sps_data, sps_data_size); + memcpy(data + vps_data_size + sps_data_size, pps_data, pps_data_size); + + ff_AMediaFormat_setBuffer(format, "csd-0", data, data_size); + + av_freep(&data); + } else { + av_log(avctx, AV_LOG_ERROR, "Could not extract VPS/PPS/SPS from extradata"); + ret = AVERROR_INVALIDDATA; + } + +done: + ff_hevc_ps_uninit(&ps); + + av_freep(&vps_data); + av_freep(&sps_data); + av_freep(&pps_data); + + return ret; +} +#endif + +#if CONFIG_MPEG2_MEDIACODEC_DECODER +static int mpeg2_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format) +{ + int ret = 0; + + if (avctx->extradata) { + ff_AMediaFormat_setBuffer(format, "csd-0", avctx->extradata, avctx->extradata_size); + } + + return ret; +} +#endif + +#if CONFIG_MPEG4_MEDIACODEC_DECODER +static int mpeg4_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format) +{ + int ret = 0; + + if (avctx->extradata) { + ff_AMediaFormat_setBuffer(format, "csd-0", avctx->extradata, avctx->extradata_size); + } + + return ret; +} +#endif + +#if CONFIG_VP8_MEDIACODEC_DECODER || CONFIG_VP9_MEDIACODEC_DECODER +static int vpx_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format) +{ + int ret = 0; + + if (avctx->extradata) { + ff_AMediaFormat_setBuffer(format, "csd-0", avctx->extradata, avctx->extradata_size); + } + + return ret; +} +#endif + +static av_cold int mediacodec_decode_init(AVCodecContext *avctx) +{ + int ret; + + const char *codec_mime = NULL; + + FFAMediaFormat *format = NULL; + MediaCodecH264DecContext *s = avctx->priv_data; + + format = ff_AMediaFormat_new(); + if (!format) { + av_log(avctx, AV_LOG_ERROR, "Failed to create media format\n"); + ret = AVERROR_EXTERNAL; + goto done; + } + + switch (avctx->codec_id) { +#if CONFIG_H264_MEDIACODEC_DECODER + case AV_CODEC_ID_H264: + codec_mime = "video/avc"; + + ret = h264_set_extradata(avctx, format); + if (ret < 0) + goto done; + break; +#endif +#if CONFIG_HEVC_MEDIACODEC_DECODER + case AV_CODEC_ID_HEVC: + codec_mime = "video/hevc"; + + ret = hevc_set_extradata(avctx, format); + if (ret < 0) + goto done; + break; +#endif +#if CONFIG_MPEG2_MEDIACODEC_DECODER + case AV_CODEC_ID_MPEG2VIDEO: + codec_mime = "video/mpeg2"; + + ret = mpeg2_set_extradata(avctx, format); + if (ret < 0) + goto done; + break; +#endif +#if CONFIG_MPEG4_MEDIACODEC_DECODER + case AV_CODEC_ID_MPEG4: + codec_mime = "video/mp4v-es", + + ret = mpeg4_set_extradata(avctx, format); + if (ret < 0) + goto done; + break; +#endif +#if CONFIG_VP8_MEDIACODEC_DECODER + case AV_CODEC_ID_VP8: + codec_mime = "video/x-vnd.on2.vp8"; + + ret = vpx_set_extradata(avctx, format); + if (ret < 0) + goto done; + break; +#endif +#if CONFIG_VP9_MEDIACODEC_DECODER + case AV_CODEC_ID_VP9: + codec_mime = "video/x-vnd.on2.vp9"; + + ret = vpx_set_extradata(avctx, format); + if (ret < 0) + goto done; + break; +#endif + default: + av_assert0(0); + } + + ff_AMediaFormat_setString(format, "mime", codec_mime); + ff_AMediaFormat_setInt32(format, "width", avctx->width); + ff_AMediaFormat_setInt32(format, "height", avctx->height); + + s->ctx = av_mallocz(sizeof(*s->ctx)); + if (!s->ctx) { + av_log(avctx, AV_LOG_ERROR, "Failed to allocate MediaCodecDecContext\n"); + ret = AVERROR(ENOMEM); + goto done; + } + + if ((ret = ff_mediacodec_dec_init(avctx, s->ctx, codec_mime, format)) < 0) { + s->ctx = NULL; + goto done; + } + + av_log(avctx, AV_LOG_INFO, "MediaCodec started successfully, ret = %d\n", ret); + +done: + if (format) { + ff_AMediaFormat_delete(format); + } + + if (ret < 0) { + mediacodec_decode_close(avctx); + } + + return ret; +} + +static int mediacodec_send_receive(AVCodecContext *avctx, + MediaCodecH264DecContext *s, + AVFrame *frame, bool wait) +{ + int ret; + + /* send any pending data from buffered packet */ + while (s->buffered_pkt.size) { + ret = ff_mediacodec_dec_send(avctx, s->ctx, &s->buffered_pkt); + if (ret == AVERROR(EAGAIN)) + break; + else if (ret < 0) + return ret; + s->buffered_pkt.size -= ret; + s->buffered_pkt.data += ret; + if (s->buffered_pkt.size <= 0) + av_packet_unref(&s->buffered_pkt); + } + + /* check for new frame */ + return ff_mediacodec_dec_receive(avctx, s->ctx, frame, wait); +} + +static int mediacodec_receive_frame(AVCodecContext *avctx, AVFrame *frame) +{ + MediaCodecH264DecContext *s = avctx->priv_data; + int ret; + + /* + * MediaCodec.flush() discards both input and output buffers, thus we + * need to delay the call to this function until the user has released or + * renderered the frames he retains. + * + * After we have buffered an input packet, check if the codec is in the + * flushing state. If it is, we need to call ff_mediacodec_dec_flush. + * + * ff_mediacodec_dec_flush returns 0 if the flush cannot be performed on + * the codec (because the user retains frames). The codec stays in the + * flushing state. + * + * ff_mediacodec_dec_flush returns 1 if the flush can actually be + * performed on the codec. The codec leaves the flushing state and can + * process again packets. + * + * ff_mediacodec_dec_flush returns a negative value if an error has + * occurred. + * + */ + if (ff_mediacodec_dec_is_flushing(avctx, s->ctx)) { + if (!ff_mediacodec_dec_flush(avctx, s->ctx)) { + return AVERROR(EAGAIN); + } + } + + /* flush buffered packet and check for new frame */ + ret = mediacodec_send_receive(avctx, s, frame, false); + if (ret != AVERROR(EAGAIN)) + return ret; + + /* skip fetching new packet if we still have one buffered */ + if (s->buffered_pkt.size > 0) + return AVERROR(EAGAIN); + + /* fetch new packet or eof */ + ret = ff_decode_get_packet(avctx, &s->buffered_pkt); + if (ret == AVERROR_EOF) { + AVPacket null_pkt = { 0 }; + ret = ff_mediacodec_dec_send(avctx, s->ctx, &null_pkt); + if (ret < 0) + return ret; + } + else if (ret < 0) + return ret; + + /* crank decoder with new packet */ + return mediacodec_send_receive(avctx, s, frame, true); +} + +static void mediacodec_decode_flush(AVCodecContext *avctx) +{ + MediaCodecH264DecContext *s = avctx->priv_data; + + av_packet_unref(&s->buffered_pkt); + + ff_mediacodec_dec_flush(avctx, s->ctx); +} + +static const AVCodecHWConfigInternal *mediacodec_hw_configs[] = { + &(const AVCodecHWConfigInternal) { + .public = { + .pix_fmt = AV_PIX_FMT_MEDIACODEC, + .methods = AV_CODEC_HW_CONFIG_METHOD_AD_HOC | + AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX, + .device_type = AV_HWDEVICE_TYPE_MEDIACODEC, + }, + .hwaccel = NULL, + }, + NULL +}; + +#if CONFIG_H264_MEDIACODEC_DECODER +AVCodec ff_h264_mediacodec_decoder = { + .name = "h264_mediacodec", + .long_name = NULL_IF_CONFIG_SMALL("H.264 Android MediaCodec decoder"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_H264, + .priv_data_size = sizeof(MediaCodecH264DecContext), + .init = mediacodec_decode_init, + .receive_frame = mediacodec_receive_frame, + .flush = mediacodec_decode_flush, + .close = mediacodec_decode_close, + .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HARDWARE, + .caps_internal = FF_CODEC_CAP_SETS_PKT_DTS, + .bsfs = "h264_mp4toannexb", + .hw_configs = mediacodec_hw_configs, + .wrapper_name = "mediacodec", +}; +#endif + +#if CONFIG_HEVC_MEDIACODEC_DECODER +AVCodec ff_hevc_mediacodec_decoder = { + .name = "hevc_mediacodec", + .long_name = NULL_IF_CONFIG_SMALL("H.265 Android MediaCodec decoder"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_HEVC, + .priv_data_size = sizeof(MediaCodecH264DecContext), + .init = mediacodec_decode_init, + .receive_frame = mediacodec_receive_frame, + .flush = mediacodec_decode_flush, + .close = mediacodec_decode_close, + .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HARDWARE, + .caps_internal = FF_CODEC_CAP_SETS_PKT_DTS, + .bsfs = "hevc_mp4toannexb", + .hw_configs = mediacodec_hw_configs, + .wrapper_name = "mediacodec", +}; +#endif + +#if CONFIG_MPEG2_MEDIACODEC_DECODER +AVCodec ff_mpeg2_mediacodec_decoder = { + .name = "mpeg2_mediacodec", + .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 Android MediaCodec decoder"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_MPEG2VIDEO, + .priv_data_size = sizeof(MediaCodecH264DecContext), + .init = mediacodec_decode_init, + .receive_frame = mediacodec_receive_frame, + .flush = mediacodec_decode_flush, + .close = mediacodec_decode_close, + .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HARDWARE, + .caps_internal = FF_CODEC_CAP_SETS_PKT_DTS, + .hw_configs = mediacodec_hw_configs, + .wrapper_name = "mediacodec", +}; +#endif + +#if CONFIG_MPEG4_MEDIACODEC_DECODER +AVCodec ff_mpeg4_mediacodec_decoder = { + .name = "mpeg4_mediacodec", + .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 Android MediaCodec decoder"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_MPEG4, + .priv_data_size = sizeof(MediaCodecH264DecContext), + .init = mediacodec_decode_init, + .receive_frame = mediacodec_receive_frame, + .flush = mediacodec_decode_flush, + .close = mediacodec_decode_close, + .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HARDWARE, + .caps_internal = FF_CODEC_CAP_SETS_PKT_DTS, + .hw_configs = mediacodec_hw_configs, + .wrapper_name = "mediacodec", +}; +#endif + +#if CONFIG_VP8_MEDIACODEC_DECODER +AVCodec ff_vp8_mediacodec_decoder = { + .name = "vp8_mediacodec", + .long_name = NULL_IF_CONFIG_SMALL("VP8 Android MediaCodec decoder"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_VP8, + .priv_data_size = sizeof(MediaCodecH264DecContext), + .init = mediacodec_decode_init, + .receive_frame = mediacodec_receive_frame, + .flush = mediacodec_decode_flush, + .close = mediacodec_decode_close, + .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HARDWARE, + .caps_internal = FF_CODEC_CAP_SETS_PKT_DTS, + .hw_configs = mediacodec_hw_configs, + .wrapper_name = "mediacodec", +}; +#endif + +#if CONFIG_VP9_MEDIACODEC_DECODER +AVCodec ff_vp9_mediacodec_decoder = { + .name = "vp9_mediacodec", + .long_name = NULL_IF_CONFIG_SMALL("VP9 Android MediaCodec decoder"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_VP9, + .priv_data_size = sizeof(MediaCodecH264DecContext), + .init = mediacodec_decode_init, + .receive_frame = mediacodec_receive_frame, + .flush = mediacodec_decode_flush, + .close = mediacodec_decode_close, + .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HARDWARE, + .caps_internal = FF_CODEC_CAP_SETS_PKT_DTS, + .hw_configs = mediacodec_hw_configs, + .wrapper_name = "mediacodec", +}; +#endif |
